[INFO] fetching crate hex_fmt 0.3.0...
[INFO] checking hex_fmt-0.3.0 against try#0c7fed2b7584d310ca8221267fa1b3bec4df427f for pr-133502-4
[INFO] extracting crate hex_fmt 0.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate hex_fmt 0.3.0 on toolchain 0c7fed2b7584d310ca8221267fa1b3bec4df427f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0c7fed2b7584d310ca8221267fa1b3bec4df427f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hex_fmt 0.3.0
[INFO] finished tweaking crates.io crate hex_fmt 0.3.0
[INFO] tweaked toml for crates.io crate hex_fmt 0.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0c7fed2b7584d310ca8221267fa1b3bec4df427f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0c7fed2b7584d310ca8221267fa1b3bec4df427f" "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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+0c7fed2b7584d310ca8221267fa1b3bec4df427f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a70d45aabb2a0cb583d7b8278996495a32a8f3fea23173f6ed811c015e26222
[INFO] running `Command { std: "docker" "start" "-a" "5a70d45aabb2a0cb583d7b8278996495a32a8f3fea23173f6ed811c015e26222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a70d45aabb2a0cb583d7b8278996495a32a8f3fea23173f6ed811c015e26222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a70d45aabb2a0cb583d7b8278996495a32a8f3fea23173f6ed811c015e26222", kill_on_drop: false }`
[INFO] [stdout] 5a70d45aabb2a0cb583d7b8278996495a32a8f3fea23173f6ed811c015e26222
[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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+0c7fed2b7584d310ca8221267fa1b3bec4df427f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ccffdbba90698d461539898871605d50df5dcc0d6043b752a2c02b2f78ba4ff
[INFO] running `Command { std: "docker" "start" "-a" "6ccffdbba90698d461539898871605d50df5dcc0d6043b752a2c02b2f78ba4ff", kill_on_drop: false }`
[INFO] [stderr]     Checking hex_fmt v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/lib.rs:197:38
[INFO] [stdout]     |
[INFO] [stdout] 197 |             Self::fmt_digit(f, bytes[(bytes.len() - right / 2 - 1)] & 0x0f)?;
[INFO] [stdout]     |                                      ^                           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 197 -             Self::fmt_digit(f, bytes[(bytes.len() - right / 2 - 1)] & 0x0f)?;
[INFO] [stdout] 197 +             Self::fmt_digit(f, bytes[bytes.len() - right / 2 - 1] & 0x0f)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/lib.rs:197:38
[INFO] [stdout]     |
[INFO] [stdout] 197 |             Self::fmt_digit(f, bytes[(bytes.len() - right / 2 - 1)] & 0x0f)?;
[INFO] [stdout]     |                                      ^                           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 197 -             Self::fmt_digit(f, bytes[(bytes.len() - right / 2 - 1)] & 0x0f)?;
[INFO] [stdout] 197 +             Self::fmt_digit(f, bytes[bytes.len() - right / 2 - 1] & 0x0f)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "6ccffdbba90698d461539898871605d50df5dcc0d6043b752a2c02b2f78ba4ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ccffdbba90698d461539898871605d50df5dcc0d6043b752a2c02b2f78ba4ff", kill_on_drop: false }`
[INFO] [stdout] 6ccffdbba90698d461539898871605d50df5dcc0d6043b752a2c02b2f78ba4ff