[INFO] fetching crate fingertrees 0.2.11...
[INFO] checking fingertrees-0.2.11 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate fingertrees 0.2.11 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate fingertrees 0.2.11
[INFO] finished tweaking crates.io crate fingertrees 0.2.11
[INFO] tweaked toml for crates.io crate fingertrees 0.2.11 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fingertrees 0.2.11 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 86 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.7.0)
[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-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f0955dfc301fb1c0d2b4d535835045f193c54ae65d25e89813010a4dd0b8965
[INFO] running `Command { std: "docker" "start" "-a" "5f0955dfc301fb1c0d2b4d535835045f193c54ae65d25e89813010a4dd0b8965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f0955dfc301fb1c0d2b4d535835045f193c54ae65d25e89813010a4dd0b8965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f0955dfc301fb1c0d2b4d535835045f193c54ae65d25e89813010a4dd0b8965", kill_on_drop: false }`
[INFO] [stdout] 5f0955dfc301fb1c0d2b4d535835045f193c54ae65d25e89813010a4dd0b8965
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29ab9aa6cd604dae145577dce60e20b8e05ab9a7a1a1606d12f72d1affa9692e
[INFO] running `Command { std: "docker" "start" "-a" "29ab9aa6cd604dae145577dce60e20b8e05ab9a7a1a1606d12f72d1affa9692e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking anstyle v1.0.11
[INFO] [stderr]     Checking clap_lex v0.7.5
[INFO] [stderr]     Checking half v2.6.0
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking regex-automata v0.4.10
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking is-terminal v0.4.16
[INFO] [stderr]     Checking fingertrees v0.2.11 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking clap_builder v4.5.47
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking clap v4.5.47
[INFO] [stderr]     Checking regex v1.11.2
[INFO] [stderr]     Checking serde_json v1.0.143
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking quickcheck v1.0.3
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stdout] error: trait `TestSend` is never used
[INFO] [stdout]    --> src/test/simple.rs:107:11
[INFO] [stdout]     |
[INFO] [stdout] 107 |     trait TestSend: Send {}
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:59:9
[INFO] [stdout]     |
[INFO] [stdout]  59 | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait `TestSync` is never used
[INFO] [stdout]    --> src/test/simple.rs:115:11
[INFO] [stdout]     |
[INFO] [stdout] 115 |     trait TestSync: Sync {}
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fingertrees` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "29ab9aa6cd604dae145577dce60e20b8e05ab9a7a1a1606d12f72d1affa9692e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29ab9aa6cd604dae145577dce60e20b8e05ab9a7a1a1606d12f72d1affa9692e", kill_on_drop: false }`
[INFO] [stdout] 29ab9aa6cd604dae145577dce60e20b8e05ab9a7a1a1606d12f72d1affa9692e