[INFO] fetching crate comtesse 0.2.3...
[INFO] checking comtesse-0.2.3 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate comtesse 0.2.3 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate comtesse 0.2.3 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate comtesse 0.2.3
[INFO] finished tweaking crates.io crate comtesse 0.2.3
[INFO] tweaked toml for crates.io crate comtesse 0.2.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2331e6d0cb7558b1b4fb17dee608abf5a91e4dc727e9b54797d33d6d5b9c8f8
[INFO] running `Command { std: "docker" "start" "-a" "e2331e6d0cb7558b1b4fb17dee608abf5a91e4dc727e9b54797d33d6d5b9c8f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2331e6d0cb7558b1b4fb17dee608abf5a91e4dc727e9b54797d33d6d5b9c8f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2331e6d0cb7558b1b4fb17dee608abf5a91e4dc727e9b54797d33d6d5b9c8f8", kill_on_drop: false }`
[INFO] [stdout] e2331e6d0cb7558b1b4fb17dee608abf5a91e4dc727e9b54797d33d6d5b9c8f8
[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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b4171f8c1ee388b0026c3c584aba978e546d709972a8d328b4898576a33717c
[INFO] running `Command { std: "docker" "start" "-a" "3b4171f8c1ee388b0026c3c584aba978e546d709972a8d328b4898576a33717c", kill_on_drop: false }`
[INFO] [stderr]     Checking comtesse v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `DumpGraphviz` is never used
[INFO] [stdout]   --> src/lib.rs:70:18
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub(crate) trait DumpGraphviz {
[INFO] [stdout]    |                  ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_safer` is never used
[INFO] [stdout]    --> src/lib.rs:180:15
[INFO] [stdout]     |
[INFO] [stdout] 180 | pub(crate) fn make_safer(input: &str) -> Cow<'_, str> {
[INFO] [stdout]     |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "3b4171f8c1ee388b0026c3c584aba978e546d709972a8d328b4898576a33717c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b4171f8c1ee388b0026c3c584aba978e546d709972a8d328b4898576a33717c", kill_on_drop: false }`
[INFO] [stdout] 3b4171f8c1ee388b0026c3c584aba978e546d709972a8d328b4898576a33717c