[INFO] updating cached repository zserik/crulz-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/zserik/crulz-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/zserik/crulz-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/zserik/crulz-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/zserik/crulz-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zserik/crulz-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zserik/crulz-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of zserik/crulz-rs on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing zserik/crulz-rs against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 98c7305170e4852cbc466da560456e78685926b5a36ef08c6e8800f299001ed2
[INFO] running `"docker" "start" "-a" "98c7305170e4852cbc466da560456e78685926b5a36ef08c6e8800f299001ed2"`
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling rustc-demangle v0.1.15
[INFO] [stderr]    Compiling boolinator v2.4.0
[INFO] [stderr]    Compiling hashbrown v0.5.0
[INFO] [stderr]    Compiling sharpen v0.0.1
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling atty v0.2.12
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling readfilez v0.1.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.30
[INFO] [stderr]    Compiling backtrace v0.3.32
[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 47.93s
[INFO] running `"docker" "inspect" "98c7305170e4852cbc466da560456e78685926b5a36ef08c6e8800f299001ed2"`
[INFO] running `"docker" "rm" "-f" "98c7305170e4852cbc466da560456e78685926b5a36ef08c6e8800f299001ed2"`
[INFO] [stdout] 98c7305170e4852cbc466da560456e78685926b5a36ef08c6e8800f299001ed2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] dff9074739230e6c213ce7538bf36e7f809fa60f4605a0269f9b21b31d2d8694
[INFO] running `"docker" "start" "-a" "dff9074739230e6c213ce7538bf36e7f809fa60f4605a0269f9b21b31d2d8694"`
[INFO] [stderr]    Compiling crulz v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta 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" "dff9074739230e6c213ce7538bf36e7f809fa60f4605a0269f9b21b31d2d8694"`
[INFO] running `"docker" "rm" "-f" "dff9074739230e6c213ce7538bf36e7f809fa60f4605a0269f9b21b31d2d8694"`
[INFO] [stdout] dff9074739230e6c213ce7538bf36e7f809fa60f4605a0269f9b21b31d2d8694