[INFO] fetching crate cliff 0.3.2...
[INFO] checking cliff-0.3.2 against try#24cd45d7714ba43afd4b8e62fb677b069b21c4a5 for pr-129543
[INFO] extracting crate cliff 0.3.2 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate cliff 0.3.2 on toolchain 24cd45d7714ba43afd4b8e62fb677b069b21c4a5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cliff 0.3.2
[INFO] finished tweaking crates.io crate cliff 0.3.2
[INFO] tweaked toml for crates.io crate cliff 0.3.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "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" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4aff423db5b952eb2ccac3860c8ab719cc771571be5050068b49fc872bbc2e5
[INFO] running `Command { std: "docker" "start" "-a" "b4aff423db5b952eb2ccac3860c8ab719cc771571be5050068b49fc872bbc2e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4aff423db5b952eb2ccac3860c8ab719cc771571be5050068b49fc872bbc2e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4aff423db5b952eb2ccac3860c8ab719cc771571be5050068b49fc872bbc2e5", kill_on_drop: false }`
[INFO] [stdout] b4aff423db5b952eb2ccac3860c8ab719cc771571be5050068b49fc872bbc2e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81a389c2c3040ccee58a46c339e966d81e42fe80f1f0d6af0265e453cc2116b2
[INFO] running `Command { std: "docker" "start" "-a" "81a389c2c3040ccee58a46c339e966d81e42fe80f1f0d6af0265e453cc2116b2", kill_on_drop: false }`
[INFO] [stderr]     Checking cliff v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `start` is never read
[INFO] [stdout]  --> src/exponential.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ExponentialCliffSearcher {
[INFO] [stdout]   |            ------------------------ field in this struct
[INFO] [stdout] 8 |     max_in: core::ops::Range<usize>,
[INFO] [stdout] 9 |     start: usize,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ExponentialCliffSearcher` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[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: field `start` is never read
[INFO] [stdout]  --> src/exponential.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ExponentialCliffSearcher {
[INFO] [stdout]   |            ------------------------ field in this struct
[INFO] [stdout] 8 |     max_in: core::ops::Range<usize>,
[INFO] [stdout] 9 |     start: usize,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ExponentialCliffSearcher` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[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 0.21s
[INFO] running `Command { std: "docker" "inspect" "81a389c2c3040ccee58a46c339e966d81e42fe80f1f0d6af0265e453cc2116b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81a389c2c3040ccee58a46c339e966d81e42fe80f1f0d6af0265e453cc2116b2", kill_on_drop: false }`
[INFO] [stdout] 81a389c2c3040ccee58a46c339e966d81e42fe80f1f0d6af0265e453cc2116b2