[INFO] cloning repository https://github.com/amendenchantment/namepermutations
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/amendenchantment/namepermutations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famendenchantment%2Fnamepermutations", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famendenchantment%2Fnamepermutations'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91ee211c0f1d2f1ab0af5d96eba1d145081c58fc
[INFO] checking amendenchantment/namepermutations/91ee211c0f1d2f1ab0af5d96eba1d145081c58fc against master#5ad98b4026d5172f27615b105658bc8bfd677be8 for pr-129422
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famendenchantment%2Fnamepermutations" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amendenchantment/namepermutations on toolchain 5ad98b4026d5172f27615b105658bc8bfd677be8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/amendenchantment/namepermutations
[INFO] finished tweaking git repo https://github.com/amendenchantment/namepermutations
[INFO] tweaked toml for git repo https://github.com/amendenchantment/namepermutations written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/amendenchantment/namepermutations 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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2273f2370b60c85ade5ea1c590d8f93339c91d5db693ad005a28d3284f8abda
[INFO] running `Command { std: "docker" "start" "-a" "b2273f2370b60c85ade5ea1c590d8f93339c91d5db693ad005a28d3284f8abda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2273f2370b60c85ade5ea1c590d8f93339c91d5db693ad005a28d3284f8abda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2273f2370b60c85ade5ea1c590d8f93339c91d5db693ad005a28d3284f8abda", kill_on_drop: false }`
[INFO] [stdout] b2273f2370b60c85ade5ea1c590d8f93339c91d5db693ad005a28d3284f8abda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b9fe2f7f69d46f111274fc33e2fca0b01bda802977303daaced40b1cc992bff
[INFO] running `Command { std: "docker" "start" "-a" "5b9fe2f7f69d46f111274fc33e2fca0b01bda802977303daaced40b1cc992bff", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]    Compiling serde_json v1.0.97
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking namepermutations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `SymmetricDifference` is never used
[INFO] [stdout]   --> src/main.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 | trait SymmetricDifference<T>
[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: trait `SymmetricDifference` is never used
[INFO] [stdout]   --> src/main.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 | trait SymmetricDifference<T>
[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` profile [unoptimized + debuginfo] target(s) in 4.11s
[INFO] running `Command { std: "docker" "inspect" "5b9fe2f7f69d46f111274fc33e2fca0b01bda802977303daaced40b1cc992bff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b9fe2f7f69d46f111274fc33e2fca0b01bda802977303daaced40b1cc992bff", kill_on_drop: false }`
[INFO] [stdout] 5b9fe2f7f69d46f111274fc33e2fca0b01bda802977303daaced40b1cc992bff