[INFO] fetching crate width_counters 2.0.2...
[INFO] checking width_counters-2.0.2 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate width_counters 2.0.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate width_counters 2.0.2
[INFO] finished tweaking crates.io crate width_counters 2.0.2
[INFO] tweaked toml for crates.io crate width_counters 2.0.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate width_counters 2.0.2 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding ron v0.8.1 (available: v0.11.0)
[INFO] [stderr]       Adding strum v0.24.1 (available: v0.27.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 022344d198d7e07a7f2770cd501be467590d33ada52035da18f2c86fb4c4aa54
[INFO] running `Command { std: "docker" "start" "-a" "022344d198d7e07a7f2770cd501be467590d33ada52035da18f2c86fb4c4aa54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "022344d198d7e07a7f2770cd501be467590d33ada52035da18f2c86fb4c4aa54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "022344d198d7e07a7f2770cd501be467590d33ada52035da18f2c86fb4c4aa54", kill_on_drop: false }`
[INFO] [stdout] 022344d198d7e07a7f2770cd501be467590d33ada52035da18f2c86fb4c4aa54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b8da3e873913190c04761b7f3d9629ab0c9c06425ca792bcdc76c03e0b275cc
[INFO] running `Command { std: "docker" "start" "-a" "2b8da3e873913190c04761b7f3d9629ab0c9c06425ca792bcdc76c03e0b275cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.22
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling enumflags2_derive v0.7.12
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]     Checking enumflags2 v0.7.12
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking width_counters v2.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `as_mut` is never used
[INFO] [stdout]   --> src/counter/mod.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub trait As<T> {
[INFO] [stdout]    |               -- method in this trait
[INFO] [stdout] 25 |         fn as_ref(&self) -> &T;
[INFO] [stdout] 26 |         fn as_mut(&mut self) -> &mut T;
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_mut` is never used
[INFO] [stdout]   --> src/counter/mod.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub trait As<T> {
[INFO] [stdout]    |               -- method in this trait
[INFO] [stdout] 25 |         fn as_ref(&self) -> &T;
[INFO] [stdout] 26 |         fn as_mut(&mut self) -> &mut T;
[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 8.01s
[INFO] running `Command { std: "docker" "inspect" "2b8da3e873913190c04761b7f3d9629ab0c9c06425ca792bcdc76c03e0b275cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b8da3e873913190c04761b7f3d9629ab0c9c06425ca792bcdc76c03e0b275cc", kill_on_drop: false }`
[INFO] [stdout] 2b8da3e873913190c04761b7f3d9629ab0c9c06425ca792bcdc76c03e0b275cc