Build failed on ubuntu 14.04.1

[kamyuentse]

Build this crate failed on ubuntu 14.04.1:

Host info:

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.1 LTS"

Build command: cargo build --release --bin front_service --manifest-path ./core/Cargo.toml --verbose

Build log:

   Compiling zookeeper v0.3.0
     Running `rustc --crate-name zookeeper /root/.cargo/registry/src/github.com-1ecc6299db9ec823/zookeeper-0.3.0/src/lib.rs --crate-type lib --emit=dep-info,link -C opt-level=3 -C metadata=18afff2b8efa19af -C extra-filename=-18afff2b8efa19af --out-dir /home/ubuntu/web_service/target/release/deps -L dependency=/home/ubuntu/web_service/target/release/deps --extern log=/home/ubuntu/web_service/target/release/deps/liblog-c73672fbee7ce8e5.rlib --extern mio=/home/ubuntu/web_service/target/release/deps/libmio-1e63d8e5040d2907.rlib --extern snowflake=/home/ubuntu/web_service/target/release/deps/libsnowflake-9e3c0622cb044461.rlib --extern lazy_static=/home/ubuntu/web_service/target/release/deps/liblazy_static-593470b8b1e9df82.rlib --extern zookeeper_derive=/home/ubuntu/web_service/target/release/deps/libzookeeper_derive-c12483d6b5c097d3.so --extern byteorder=/home/ubuntu/web_service/target/release/deps/libbyteorder-b7e41c93a912a264.rlib --extern bytes=/home/ubuntu/web_service/target/release/deps/libbytes-9e91f13708218df5.rlib --cap-lints allow`
rustc: /checkout/src/llvm/lib/Analysis/ValueTracking.cpp:1594: void computeKnownBits(const llvm::Value*, llvm::APInt&, llvm::APInt&, unsigned int, const {anonymous}::Query&): Assertion `(KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?"' failed.
error: Could not compile `zookeeper`.

[bonifaido]

For me this looks like a compiler issue, could you please describe rust version, architecture, etc... and if you could just compile the library itself?

[fulmicoton]

As commented on the rustc issue it seems to be a bug in the compiler.
A minimal snippet to reproduce would be as follows : https://github.com/fulmicoton/bug_known_bits/blob/master/src/lib.rs.

In the zookeeper codebase, this is induced by the Permission enum that has a repr(32).

The enum is probably not a good idea there, as we can produce values that are not defined in the enum
by combining two permissions.
I am unsure of the use of the Not operations too.

A light change would be to use a struct Permission(u32) instead.

A possible fix is available here : https://github.com/fulmicoton/rust-zookeeper

[fulmicoton]

is there a date for 0.4 ?

[bonifaido]

Why not now? :) I just released 0.4.0 with the latest fix you submitted: https://crates.io/crates/zookeeper/0.4.0

[fulmicoton]

Awesome