[INFO] updating cached repository barrelll/cl
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/barrelll/cl
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/barrelll/cl" "work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/barrelll/cl"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/barrelll/cl'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/barrelll/cl" "work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/barrelll/cl"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/barrelll/cl'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2575eea9a81b5258f7ebe8483d7a4d89fd7889eb
[INFO] sha for GitHub repo barrelll/cl: 2575eea9a81b5258f7ebe8483d7a4d89fd7889eb
[INFO] validating manifest of barrelll/cl on toolchain master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of barrelll/cl on toolchain try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing barrelll/cl
[INFO] finished frobbing barrelll/cl
[INFO] frobbed toml for barrelll/cl written to work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/barrelll/cl/Cargo.toml
[INFO] started frobbing barrelll/cl
[INFO] finished frobbing barrelll/cl
[INFO] frobbed toml for barrelll/cl written to work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/barrelll/cl/Cargo.toml
[INFO] crate barrelll/cl has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking barrelll/cl against master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104 for pr-57321
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57321/worker-7/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/barrelll/cl:/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=forbid" "-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" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f0bd4cf1472be8a4a89018077f59ec4c3228e7ac90b9b6f4e9915c6ee287871f
[INFO] running `"docker" "start" "-a" "f0bd4cf1472be8a4a89018077f59ec4c3228e7ac90b9b6f4e9915c6ee287871f"`
[INFO] [stderr]     Checking shared_library v0.1.6
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking num-complex v0.1.40
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]     Checking x11-dl v2.14.0
[INFO] [stderr]     Checking url v1.5.1
[INFO] [stderr]     Checking fs2 v0.2.5
[INFO] [stderr]     Checking tempfile v2.1.5
[INFO] [stderr]     Checking num-bigint v0.1.40
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]     Checking memmap v0.4.0
[INFO] [stderr]     Checking ash v0.15.8
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]     Checking hyper v0.10.12
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]     Checking num v0.1.39
[INFO] [stderr]     Checking hyper-native-tls v0.2.4
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]     Checking dlib v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.7.8
[INFO] [stderr]     Checking wayland-client v0.7.8
[INFO] [stderr]     Checking wayland-window v0.4.4
[INFO] [stderr]     Checking wayland-kbd v0.6.3
[INFO] [stderr]     Checking winit v0.5.11
[INFO] [stderr]     Checking learner v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let output = data.learn(2, &mut layers); // this one is Bob.
[INFO] [stderr]   |         ^^^^^^ help: consider using `_output` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let output = data.learn(2, &mut layers); // this one is Bob.
[INFO] [stderr]   |         ^^^^^^ help: consider using `_output` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.20s
[INFO] running `"docker" "inspect" "f0bd4cf1472be8a4a89018077f59ec4c3228e7ac90b9b6f4e9915c6ee287871f"`
[INFO] running `"docker" "rm" "-f" "f0bd4cf1472be8a4a89018077f59ec4c3228e7ac90b9b6f4e9915c6ee287871f"`
[INFO] [stdout] f0bd4cf1472be8a4a89018077f59ec4c3228e7ac90b9b6f4e9915c6ee287871f