[INFO] cloning repository https://github.com/cautonwong/langs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cautonwong/langs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcautonwong%2Flangs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcautonwong%2Flangs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6d269ce009c32c2d629f3b46146229807390c21
[INFO] testing cautonwong/langs against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcautonwong%2Flangs" "/workspace/builds/worker-75/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-75/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cautonwong/langs on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cautonwong/langs
[INFO] finished tweaking git repo https://github.com/cautonwong/langs
[INFO] tweaked toml for git repo https://github.com/cautonwong/langs written to /workspace/builds/worker-75/source/Cargo.toml
[INFO] crate git repo https://github.com/cautonwong/langs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ac7ff67660f07da65957bcb4f9e48f9439694ce7eb56eaa3c7acc8d91e5f031
[INFO] running `Command { std: "docker" "start" "-a" "2ac7ff67660f07da65957bcb4f9e48f9439694ce7eb56eaa3c7acc8d91e5f031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ac7ff67660f07da65957bcb4f9e48f9439694ce7eb56eaa3c7acc8d91e5f031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ac7ff67660f07da65957bcb4f9e48f9439694ce7eb56eaa3c7acc8d91e5f031", kill_on_drop: false }`
[INFO] [stdout] 2ac7ff67660f07da65957bcb4f9e48f9439694ce7eb56eaa3c7acc8d91e5f031
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7652bcd56f5cc509a53f67445beeade69d182b60f4574516dc1d95f2f48130a3
[INFO] running `Command { std: "docker" "start" "-a" "7652bcd56f5cc509a53f67445beeade69d182b60f4574516dc1d95f2f48130a3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mater v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/main.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 |     for i in (0..1000){
[INFO] [stdout]    |              ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.20s
[INFO] running `Command { std: "docker" "inspect" "7652bcd56f5cc509a53f67445beeade69d182b60f4574516dc1d95f2f48130a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7652bcd56f5cc509a53f67445beeade69d182b60f4574516dc1d95f2f48130a3", kill_on_drop: false }`
[INFO] [stdout] 7652bcd56f5cc509a53f67445beeade69d182b60f4574516dc1d95f2f48130a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf34171f79be25ea36efbd4c40c96a194d7ccec87750cf7ea92ce4096b7de671
[INFO] running `Command { std: "docker" "start" "-a" "bf34171f79be25ea36efbd4c40c96a194d7ccec87750cf7ea92ce4096b7de671", kill_on_drop: false }`
[INFO] [stderr]    Compiling mater v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/main.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 |     for i in (0..1000){
[INFO] [stdout]    |              ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "bf34171f79be25ea36efbd4c40c96a194d7ccec87750cf7ea92ce4096b7de671", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf34171f79be25ea36efbd4c40c96a194d7ccec87750cf7ea92ce4096b7de671", kill_on_drop: false }`
[INFO] [stdout] bf34171f79be25ea36efbd4c40c96a194d7ccec87750cf7ea92ce4096b7de671
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] beaf2572be935e15c5dc32a562a6c2df52da2729791e63313197bb20a0dbc9d6
[INFO] running `Command { std: "docker" "start" "-a" "beaf2572be935e15c5dc32a562a6c2df52da2729791e63313197bb20a0dbc9d6", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/main.rs:16:11
[INFO] [stderr]    |
[INFO] [stderr] 16 |     for i in (0..1000){
[INFO] [stderr]    |              ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mater` (bin "mater" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mater-fc0aa78f7ec4410e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "beaf2572be935e15c5dc32a562a6c2df52da2729791e63313197bb20a0dbc9d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "beaf2572be935e15c5dc32a562a6c2df52da2729791e63313197bb20a0dbc9d6", kill_on_drop: false }`
[INFO] [stdout] beaf2572be935e15c5dc32a562a6c2df52da2729791e63313197bb20a0dbc9d6