[INFO] cloning repository https://github.com/ndaultryball1/num_alg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ndaultryball1/num_alg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fndaultryball1%2Fnum_alg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fndaultryball1%2Fnum_alg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c532151be9e80f065530c1bfd842f2f0b297c0a2
[INFO] checking ndaultryball1/num_alg against master#4c60a0ea5b2385d7400df9db1ad04e96f2a4c154 for 92191_revert
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fndaultryball1%2Fnum_alg" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ndaultryball1/num_alg on toolchain 4c60a0ea5b2385d7400df9db1ad04e96f2a4c154
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c60a0ea5b2385d7400df9db1ad04e96f2a4c154" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ndaultryball1/num_alg
[INFO] finished tweaking git repo https://github.com/ndaultryball1/num_alg
[INFO] tweaked toml for git repo https://github.com/ndaultryball1/num_alg written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/ndaultryball1/num_alg already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c60a0ea5b2385d7400df9db1ad04e96f2a4c154" "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-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+4c60a0ea5b2385d7400df9db1ad04e96f2a4c154" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3273295d49434e02a624490b93908b4cd8c7f7bed2b73fcc5722713076b803b
[INFO] running `Command { std: "docker" "start" "-a" "b3273295d49434e02a624490b93908b4cd8c7f7bed2b73fcc5722713076b803b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3273295d49434e02a624490b93908b4cd8c7f7bed2b73fcc5722713076b803b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3273295d49434e02a624490b93908b4cd8c7f7bed2b73fcc5722713076b803b", kill_on_drop: false }`
[INFO] [stdout] b3273295d49434e02a624490b93908b4cd8c7f7bed2b73fcc5722713076b803b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=forbid" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+4c60a0ea5b2385d7400df9db1ad04e96f2a4c154" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 264b8fb474fc3844dad417a8c400e34c1748e13f6f2ef77cbb04caa979cbc6d5
[INFO] running `Command { std: "docker" "start" "-a" "264b8fb474fc3844dad417a8c400e34c1748e13f6f2ef77cbb04caa979cbc6d5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking num_alg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Zero`
[INFO] [stdout]  --> src/poly.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 | use num_traits::{Num, Zero};
[INFO] [stdout]   |                       ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 6.47s
[INFO] running `Command { std: "docker" "inspect" "264b8fb474fc3844dad417a8c400e34c1748e13f6f2ef77cbb04caa979cbc6d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "264b8fb474fc3844dad417a8c400e34c1748e13f6f2ef77cbb04caa979cbc6d5", kill_on_drop: false }`
[INFO] [stdout] 264b8fb474fc3844dad417a8c400e34c1748e13f6f2ef77cbb04caa979cbc6d5