[INFO] crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a is already in cache
[INFO] testing compiler-builtins-snapshot-0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a against 1.38.0 for beta-1.39-1
[INFO] extracting crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a into work/builds/worker-3/source
[INFO] validating manifest of crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a
[INFO] finished tweaking crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a
[INFO] tweaked toml for crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a written to work/builds/worker-3/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 65ea6037bac7856fa4460d3b5000248730064467885bc26c39d870b7cd593524
[INFO] running `"docker" "start" "-a" "65ea6037bac7856fa4460d3b5000248730064467885bc26c39d870b7cd593524"`
[INFO] [stderr]    Compiling rustc-cfg v0.3.0
[INFO] [stderr]    Compiling compiler-builtins-snapshot v0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'gcc::Config': gcc::Config has been renamed to gcc::Build
[INFO] [stderr]   --> build.rs:66:24
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let cfg = &mut gcc::Config::new();
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'gcc::Build::new': crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stderr]   --> build.rs:66:24
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let cfg = &mut gcc::Config::new();
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | #![feature(asm)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | #![feature(compiler_builtins)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | #![feature(core_intrinsics)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | #![feature(naked_functions)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | #![feature(staged_api)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/lib.rs:70:1
[INFO] [stderr]    |
[INFO] [stderr] 70 | / macro_rules! srem {
[INFO] [stderr] 71 | |     ($sty:ty, $a:expr, $b:expr) => {
[INFO] [stderr] 72 | |         unsafe {
[INFO] [stderr] 73 | |             let a = $a;
[INFO] [stderr] ...  |
[INFO] [stderr] 82 | |     }
[INFO] [stderr] 83 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/lib.rs:1:31
[INFO] [stderr]    |
[INFO] [stderr] 1  | #![cfg_attr(not(stage0), deny(warnings))]
[INFO] [stderr]    |                               ^^^^^^^^
[INFO] [stderr]    = note: `#[warn(unused_macros)]` implied by `#[warn(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `compiler-builtins-snapshot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "65ea6037bac7856fa4460d3b5000248730064467885bc26c39d870b7cd593524"`
[INFO] running `"docker" "rm" "-f" "65ea6037bac7856fa4460d3b5000248730064467885bc26c39d870b7cd593524"`
[INFO] [stdout] 65ea6037bac7856fa4460d3b5000248730064467885bc26c39d870b7cd593524