Cannot access border-collapse sample on mozillademo

[CYBAI]

The mozilla demo page for border-collapse at https://mdn.mozillademos.org/en-US/docs/Web/CSS/border-collapse$samples/A_colorful_table_of_browser_engines?revision=1160464 can be visited correctly on Firefox but I can't visit it on Servo.

And with turning on loggings for net, I found the request to the page is actually 404.

However, as we can see, the x-cache from response header is Error from cloudfront in Servo but it's Hit from cloudfront in Firefox

Request logs in Servo:

[2020-04-03T02:57:19Z INFO  net::http_loader] GET request for https://mdn.mozillademos.org/en-US/docs/Web/CSS/border-collapse/A_colorful_table_of_browser_engines?revision=1160464
[2020-04-03T02:57:19Z INFO  net::http_loader]  - ("accept", "text/html, application/xhtml+xml, application/xml; q=0.9, */*; q=0.8")
[2020-04-03T02:57:19Z INFO  net::http_loader]  - ("accept-language", "en-US, en; q=0.5")
[2020-04-03T02:57:19Z INFO  net::http_loader]  - ("user-agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:72.0) Servo/1.0 Firefox/72.0")
[2020-04-03T02:57:19Z INFO  net::http_loader]  - ("accept-encoding", "gzip, deflate, br")
[2020-04-03T02:57:20Z DEBUG net::http_loader] Not notifying devtools (no request_id)
[2020-04-03T02:57:20Z INFO  net::http_loader] HTTP/2.0 response for https://mdn.mozillademos.org/en-US/docs/Web/CSS/border-collapse/A_colorful_table_of_browser_engines?revision=1160464
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("content-type", "text/html; charset=utf-8")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("cache-control", "max-age=0, no-cache, no-store, must-revalidate")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("content-language", "en-US")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("date", "Fri, 03 Apr 2020 02:54:10 GMT")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("expires", "Fri, 03 Apr 2020 02:54:10 GMT")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("server", "meinheld/1.0.1")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("strict-transport-security", "max-age=63072000")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("x-content-type-options", "nosniff")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("x-frame-options", "DENY")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("x-xss-protection", "1; mode=block")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("content-encoding", "gzip")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("vary", "Accept-Encoding,Cookie")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("x-cache", "Error from cloudfront")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("via", "1.1 6ea9c3201cba3107c8908dce0b8278e4.cloudfront.net (CloudFront)")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("x-amz-cf-pop", "NRT20-C4")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("x-amz-cf-id", "HiwlitW91UEEzFO5-7jNmWkFF4o-F2NGMCC7GG8WO0kUTFu9PSCCdg==")
[2020-04-03T02:57:20Z INFO  net::http_loader]  - ("age", "189")
[2020-04-03T02:57:20Z DEBUG net::http_loader] got 404 response for "https://mdn.mozillademos.org/en-US/docs/... (843041cb3b6af48d)"
[2020-04-03T02:57:20Z INFO  net::hsts] adding host mdn.mozillademos.org to the strict transport security list
[2020-04-03T02:57:20Z INFO  net::hsts] - max-age 63072000
[2020-04-03T02:57:20Z DEBUG net::http_loader] successfully finished response for "https://mdn.mozillademos.org/en-US/docs/... (843041cb3b6af48d)"

Request in Firefox:

Built with latest master e47e884 on macOS 10.14.6

(also refer to #12696 that @jrmuizel provided the link 👀)

[CYBAI]

oh, okay! I've found what happened and this is actually not an issue.

The problem is, @dralley and I ran mach command with the url directly. The url contains dollar sign symbol and then it's interpreted as env var.

So, we can see from the first line of log for Servo above; it's actually /CSS/border-collapse/A_colorful_...

GET request for https://mdn.mozillademos.org/en-US/docs/Web/CSS/border-collapse/A_colorful_table_of_browser_engines?revision=1160464

so, when we run following command, we can visit the page correctly.

$ ./mach run 'https://mdn.mozillademos.org/en-US/docs/Web/CSS/border-collapse$samples/A_colorful_table_of_browser_engines?revision=1160464'