[INFO] cloning repository https://github.com/Pizzascripters/abstract-algebra
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Pizzascripters/abstract-algebra" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPizzascripters%2Fabstract-algebra", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPizzascripters%2Fabstract-algebra'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7663b6781a80316743bf0a434497b531f3ef4bb7
[INFO] checking Pizzascripters/abstract-algebra against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPizzascripters%2Fabstract-algebra" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Pizzascripters/abstract-algebra on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Pizzascripters/abstract-algebra
[INFO] finished tweaking git repo https://github.com/Pizzascripters/abstract-algebra
[INFO] tweaked toml for git repo https://github.com/Pizzascripters/abstract-algebra written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Pizzascripters/abstract-algebra 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65ce36a414bfdc2bcc0007679895e7f1c3bb6521455653a08c4c5f1f6402ab3e
[INFO] running `Command { std: "docker" "start" "-a" "65ce36a414bfdc2bcc0007679895e7f1c3bb6521455653a08c4c5f1f6402ab3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65ce36a414bfdc2bcc0007679895e7f1c3bb6521455653a08c4c5f1f6402ab3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65ce36a414bfdc2bcc0007679895e7f1c3bb6521455653a08c4c5f1f6402ab3e", kill_on_drop: false }`
[INFO] [stdout] 65ce36a414bfdc2bcc0007679895e7f1c3bb6521455653a08c4c5f1f6402ab3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06399b55ae1f5df64178c9ba8dfb07d1e92a574968203c4c60e957f285059487
[INFO] running `Command { std: "docker" "start" "-a" "06399b55ae1f5df64178c9ba8dfb07d1e92a574968203c4c60e957f285059487", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking os_str_bytes v6.0.1
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking clap_lex v0.2.0
[INFO] [stderr]     Checking indexmap v1.8.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.1.18
[INFO] [stderr]     Checking clap v3.1.18
[INFO] [stderr]     Checking abstract-algebra v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `identity` is never used
[INFO] [stdout]  --> src/group/group.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait Group<G: Clone + ToString> {
[INFO] [stdout]   |           ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 9 |     fn identity(&self) -> G;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `identity` is never used
[INFO] [stdout]  --> src/group/group.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait Group<G: Clone + ToString> {
[INFO] [stdout]   |           ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 9 |     fn identity(&self) -> G;
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.48s
[INFO] running `Command { std: "docker" "inspect" "06399b55ae1f5df64178c9ba8dfb07d1e92a574968203c4c60e957f285059487", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06399b55ae1f5df64178c9ba8dfb07d1e92a574968203c4c60e957f285059487", kill_on_drop: false }`
[INFO] [stdout] 06399b55ae1f5df64178c9ba8dfb07d1e92a574968203c4c60e957f285059487