[INFO] cloning repository https://github.com/kornysietsma/rust-101-sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kornysietsma/rust-101-sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkornysietsma%2Frust-101-sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkornysietsma%2Frust-101-sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3ec0de9a0f0000030a27e4e73bbd7ada9059fc82
[INFO] checking kornysietsma/rust-101-sample against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkornysietsma%2Frust-101-sample" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kornysietsma/rust-101-sample on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kornysietsma/rust-101-sample
[INFO] finished tweaking git repo https://github.com/kornysietsma/rust-101-sample
[INFO] tweaked toml for git repo https://github.com/kornysietsma/rust-101-sample written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/kornysietsma/rust-101-sample already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9efa14f3025dbeabec3c33c81603d2d175a3487557554544319baba27173952c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9efa14f3025dbeabec3c33c81603d2d175a3487557554544319baba27173952c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9efa14f3025dbeabec3c33c81603d2d175a3487557554544319baba27173952c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9efa14f3025dbeabec3c33c81603d2d175a3487557554544319baba27173952c", kill_on_drop: false }`
[INFO] [stdout] 9efa14f3025dbeabec3c33c81603d2d175a3487557554544319baba27173952c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c02423083faf58ed3473363abb41c05ae3e17d0d097a9f4a4f1d236b916f660
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4c02423083faf58ed3473363abb41c05ae3e17d0d097a9f4a4f1d236b916f660", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.43
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling cc v1.0.38
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking backtrace v0.3.34
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking rust_101 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `fib`
[INFO] [stdout]  --> src/step_1_fibs.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn fib(n: u32) -> u128 {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` 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 35.39s
[INFO] running `Command { std: "docker" "inspect" "4c02423083faf58ed3473363abb41c05ae3e17d0d097a9f4a4f1d236b916f660", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c02423083faf58ed3473363abb41c05ae3e17d0d097a9f4a4f1d236b916f660", kill_on_drop: false }`
[INFO] [stdout] 4c02423083faf58ed3473363abb41c05ae3e17d0d097a9f4a4f1d236b916f660