[INFO] fetching crate idheap 0.0.1...
[INFO] testing idheap-0.0.1 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate idheap 0.0.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate idheap 0.0.1
[INFO] finished tweaking crates.io crate idheap 0.0.1
[INFO] tweaked toml for crates.io crate idheap 0.0.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate idheap 0.0.1 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d5167b1313c3e0fe0f17b53450e0c66012b9e270693fdca20b8e0d74670f2db
[INFO] running `Command { std: "docker" "start" "-a" "8d5167b1313c3e0fe0f17b53450e0c66012b9e270693fdca20b8e0d74670f2db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d5167b1313c3e0fe0f17b53450e0c66012b9e270693fdca20b8e0d74670f2db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d5167b1313c3e0fe0f17b53450e0c66012b9e270693fdca20b8e0d74670f2db", kill_on_drop: false }`
[INFO] [stdout] 8d5167b1313c3e0fe0f17b53450e0c66012b9e270693fdca20b8e0d74670f2db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22f19b06170a884bfca8b61ff21bc13d6919b7ee8be95b17c93126527397cef2
[INFO] running `Command { std: "docker" "start" "-a" "22f19b06170a884bfca8b61ff21bc13d6919b7ee8be95b17c93126527397cef2", kill_on_drop: false }`
[INFO] [stderr]    Compiling idheap v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:510:11
[INFO] [stdout]     |
[INFO] [stdout] 510 |       let mut newblock = mkblock(id, id);
[INFO] [stdout]     |           ----^^^^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "22f19b06170a884bfca8b61ff21bc13d6919b7ee8be95b17c93126527397cef2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22f19b06170a884bfca8b61ff21bc13d6919b7ee8be95b17c93126527397cef2", kill_on_drop: false }`
[INFO] [stdout] 22f19b06170a884bfca8b61ff21bc13d6919b7ee8be95b17c93126527397cef2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c58ef898083cf8025957f3337822ba57540f8009ba0c75d63bc4b6ce92df0b0
[INFO] running `Command { std: "docker" "start" "-a" "0c58ef898083cf8025957f3337822ba57540f8009ba0c75d63bc4b6ce92df0b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling idheap v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:510:11
[INFO] [stdout]     |
[INFO] [stdout] 510 |       let mut newblock = mkblock(id, id);
[INFO] [stdout]     |           ----^^^^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:510:11
[INFO] [stdout]     |
[INFO] [stdout] 510 |       let mut newblock = mkblock(id, id);
[INFO] [stdout]     |           ----^^^^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "0c58ef898083cf8025957f3337822ba57540f8009ba0c75d63bc4b6ce92df0b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c58ef898083cf8025957f3337822ba57540f8009ba0c75d63bc4b6ce92df0b0", kill_on_drop: false }`
[INFO] [stdout] 0c58ef898083cf8025957f3337822ba57540f8009ba0c75d63bc4b6ce92df0b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 642b0f1223e404d7daf4313b22b3c859cc6b1bbdb244ba4bf31b37d60d7d11fb
[INFO] running `Command { std: "docker" "start" "-a" "642b0f1223e404d7daf4313b22b3c859cc6b1bbdb244ba4bf31b37d60d7d11fb", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:510:11
[INFO] [stderr]     |
[INFO] [stderr] 510 |       let mut newblock = mkblock(id, id);
[INFO] [stderr]     |           ----^^^^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `idheap` (lib) generated 1 warning (run `cargo fix --lib -p idheap` to apply 1 suggestion)
[INFO] [stderr] warning: `idheap` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/idheap-0683da8a770e74e0)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test tests::alloc_id_head ... ok
[INFO] [stdout] test tests::alloc_one ... ok
[INFO] [stdout] test tests::alloc_id_split ... ok
[INFO] [stdout] test tests::deserialize_serialize ... ok
[INFO] [stdout] test tests::from_slice ... ok
[INFO] [stdout] test tests::from_strlist ... ok
[INFO] [stdout] test tests::from_strlist_fail ... ok
[INFO] [stdout] test tests::just_init ... ok
[INFO] [stdout] test tests::from_slice_fail ... ok
[INFO] [stdout] test tests::merge_front_and_back_add_tail ... ok
[INFO] [stdout] test tests::alloc_id_tail ... ok
[INFO] [stdout] test tests::merge_front_and_back_add_head ... ok
[INFO] [stdout] test tests::return_new_first_block ... ok
[INFO] [stdout] test tests::single_id ... ok
[INFO] [stdout] test tests::send_to_thread ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests idheap
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "642b0f1223e404d7daf4313b22b3c859cc6b1bbdb244ba4bf31b37d60d7d11fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "642b0f1223e404d7daf4313b22b3c859cc6b1bbdb244ba4bf31b37d60d7d11fb", kill_on_drop: false }`
[INFO] [stdout] 642b0f1223e404d7daf4313b22b3c859cc6b1bbdb244ba4bf31b37d60d7d11fb