[INFO] cloning repository https://github.com/jack-bliss/rust-complex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jack-bliss/rust-complex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjack-bliss%2Frust-complex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjack-bliss%2Frust-complex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34f3daced2b334aaf484b958756cc72508eaff75
[INFO] checking jack-bliss/rust-complex against master#068609ce766e55d2e7371cd2a86143a6d7e8e2e4 for pr-138952
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjack-bliss%2Frust-complex" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jack-bliss/rust-complex on toolchain 068609ce766e55d2e7371cd2a86143a6d7e8e2e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jack-bliss/rust-complex
[INFO] finished tweaking git repo https://github.com/jack-bliss/rust-complex
[INFO] tweaked toml for git repo https://github.com/jack-bliss/rust-complex written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jack-bliss/rust-complex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52126b04f3d7c229307458637833cc1d3616411923eb7af2e965169c417a9041
[INFO] running `Command { std: "docker" "start" "-a" "52126b04f3d7c229307458637833cc1d3616411923eb7af2e965169c417a9041", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52126b04f3d7c229307458637833cc1d3616411923eb7af2e965169c417a9041", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52126b04f3d7c229307458637833cc1d3616411923eb7af2e965169c417a9041", kill_on_drop: false }`
[INFO] [stdout] 52126b04f3d7c229307458637833cc1d3616411923eb7af2e965169c417a9041
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8daa35f4c3be8d293c9953b8d75efdf88d247a99ee13d8e2b3d6220ee43b20bc
[INFO] running `Command { std: "docker" "start" "-a" "8daa35f4c3be8d293c9953b8d75efdf88d247a99ee13d8e2b3d6220ee43b20bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]    Compiling thiserror v1.0.49
[INFO] [stderr]     Checking impl_ops v0.1.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking aho-corasick v1.1.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.49
[INFO] [stderr]     Checking regex v1.9.5
[INFO] [stderr]     Checking complex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `pow` is never used
[INFO] [stdout]  --> src/pow.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Power<T> {
[INFO] [stdout]   |           ----- method in this trait
[INFO] [stdout] 4 |     fn pow(&self, index: T) -> Self;
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.26s
[INFO] running `Command { std: "docker" "inspect" "8daa35f4c3be8d293c9953b8d75efdf88d247a99ee13d8e2b3d6220ee43b20bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8daa35f4c3be8d293c9953b8d75efdf88d247a99ee13d8e2b3d6220ee43b20bc", kill_on_drop: false }`
[INFO] [stdout] 8daa35f4c3be8d293c9953b8d75efdf88d247a99ee13d8e2b3d6220ee43b20bc