[INFO] cloning repository zserik/crulz-rs
[INFO] running `"git" "clone" "--bare" "git://github.com/zserik/crulz-rs.git" "work/cache/sources/gh/zserik/crulz-rs"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/zserik/crulz-rs'...
[INFO] running `"git" "clone" "work/cache/sources/gh/zserik/crulz-rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/zserik/crulz-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/zserik/crulz-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zserik/crulz-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/zserik/crulz-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/zserik/crulz-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 93480cbc85f4eccc8820807dc9f559f310a70a4c
[INFO] sha for GitHub repo zserik/crulz-rs: 93480cbc85f4eccc8820807dc9f559f310a70a4c
[INFO] validating manifest of zserik/crulz-rs on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of zserik/crulz-rs on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing zserik/crulz-rs
[INFO] finished frobbing zserik/crulz-rs
[INFO] frobbed toml for zserik/crulz-rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/zserik/crulz-rs/Cargo.toml
[INFO] started frobbing zserik/crulz-rs
[INFO] finished frobbing zserik/crulz-rs
[INFO] frobbed toml for zserik/crulz-rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/zserik/crulz-rs/Cargo.toml
[INFO] crate zserik/crulz-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sharpen v0.0.1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing zserik/crulz-rs against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/zserik/crulz-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] bcc2f538ed363b7fb5a2b5ffc8f0f8c241de2ce3c35db6331a6e584bbf4d6061
[INFO] running `"docker" "start" "-a" "bcc2f538ed363b7fb5a2b5ffc8f0f8c241de2ce3c35db6331a6e584bbf4d6061"`
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling boolinator v2.4.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling sharpen v0.0.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.30
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling atty v0.2.12
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling backtrace v0.3.32
[INFO] [stderr]    Compiling readfilez v0.1.3
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling crulz v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.82s
[INFO] running `"docker" "inspect" "bcc2f538ed363b7fb5a2b5ffc8f0f8c241de2ce3c35db6331a6e584bbf4d6061"`
[INFO] running `"docker" "rm" "-f" "bcc2f538ed363b7fb5a2b5ffc8f0f8c241de2ce3c35db6331a6e584bbf4d6061"`
[INFO] [stdout] bcc2f538ed363b7fb5a2b5ffc8f0f8c241de2ce3c35db6331a6e584bbf4d6061
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/zserik/crulz-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 735e772c0b928e9db6205a615f9a4874400fd40a2a1c8a5bbd91a69f8abfbf66
[INFO] running `"docker" "start" "-a" "735e772c0b928e9db6205a615f9a4874400fd40a2a1c8a5bbd91a69f8abfbf66"`
[INFO] [stderr]    Compiling crulz v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![cfg_attr(test, feature(test))]
[INFO] [stderr]   |                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `crulz`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "735e772c0b928e9db6205a615f9a4874400fd40a2a1c8a5bbd91a69f8abfbf66"`
[INFO] running `"docker" "rm" "-f" "735e772c0b928e9db6205a615f9a4874400fd40a2a1c8a5bbd91a69f8abfbf66"`
[INFO] [stdout] 735e772c0b928e9db6205a615f9a4874400fd40a2a1c8a5bbd91a69f8abfbf66