[INFO] fetching crate linked-tail-list 0.0.1...
[INFO] testing linked-tail-list-0.0.1 against 1.59.0 for beta-1.60-1
[INFO] extracting crate linked-tail-list 0.0.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate linked-tail-list 0.0.1 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate linked-tail-list 0.0.1
[INFO] finished tweaking crates.io crate linked-tail-list 0.0.1
[INFO] tweaked toml for crates.io crate linked-tail-list 0.0.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f431261e01c8d17f7e139589ae680c7eb0f8fcf11b1bd815aa8a8847c864e286
[INFO] running `Command { std: "docker" "start" "-a" "f431261e01c8d17f7e139589ae680c7eb0f8fcf11b1bd815aa8a8847c864e286", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f431261e01c8d17f7e139589ae680c7eb0f8fcf11b1bd815aa8a8847c864e286", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f431261e01c8d17f7e139589ae680c7eb0f8fcf11b1bd815aa8a8847c864e286", kill_on_drop: false }`
[INFO] [stdout] f431261e01c8d17f7e139589ae680c7eb0f8fcf11b1bd815aa8a8847c864e286
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47f55943492f9f9b9d93c8ad30894c08368e6e310365cc2948514fea340bf59c
[INFO] running `Command { std: "docker" "start" "-a" "47f55943492f9f9b9d93c8ad30894c08368e6e310365cc2948514fea340bf59c", kill_on_drop: false }`
[INFO] [stderr]    Compiling linked-tail-list v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:358:5
[INFO] [stdout]     |
[INFO] [stdout] 358 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "47f55943492f9f9b9d93c8ad30894c08368e6e310365cc2948514fea340bf59c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47f55943492f9f9b9d93c8ad30894c08368e6e310365cc2948514fea340bf59c", kill_on_drop: false }`
[INFO] [stdout] 47f55943492f9f9b9d93c8ad30894c08368e6e310365cc2948514fea340bf59c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8416d27e6e305895e8249288c51e016f77ed00bb129452ba871fd177c87f076a
[INFO] running `Command { std: "docker" "start" "-a" "8416d27e6e305895e8249288c51e016f77ed00bb129452ba871fd177c87f076a", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:358:5
[INFO] [stdout]     |
[INFO] [stdout] 358 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling linked-tail-list v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/lib.rs:358:5
[INFO] [stdout]     |
[INFO] [stdout] 358 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "8416d27e6e305895e8249288c51e016f77ed00bb129452ba871fd177c87f076a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8416d27e6e305895e8249288c51e016f77ed00bb129452ba871fd177c87f076a", kill_on_drop: false }`
[INFO] [stdout] 8416d27e6e305895e8249288c51e016f77ed00bb129452ba871fd177c87f076a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f9e230bebb44f8cf91cde8068703ac9cffdfed983f695fe56469d41261cabbed
[INFO] running `Command { std: "docker" "start" "-a" "f9e230bebb44f8cf91cde8068703ac9cffdfed983f695fe56469d41261cabbed", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/lib.rs:358:5
[INFO] [stderr]     |
[INFO] [stderr] 358 |     unsafe {
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `linked-tail-list` (lib) generated 1 warning
[INFO] [stderr] warning: `linked-tail-list` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/linked_tail_list-8506993705b7e897)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::it_swaps_places ... ok
[INFO] [stdout] test tests::remove_tail ... ok
[INFO] [stdout] test tests::remove_all_iter ... ok
[INFO] [stdout] test tests::remove_mark_alternate ... ok
[INFO] [stdout] test tests::iter_insert ... ok
[INFO] [stdout] test tests::mark_all ... ok
[INFO] [stdout] test tests::fill_and_drop ... ok
[INFO] [stdout] test tests::fill_and_iter ... ok
[INFO] [stdout] test tests::iter_tail ... ok
[INFO] [stdout] test tests::iter_into_tail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.98s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests linked-tail-list
[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" "f9e230bebb44f8cf91cde8068703ac9cffdfed983f695fe56469d41261cabbed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9e230bebb44f8cf91cde8068703ac9cffdfed983f695fe56469d41261cabbed", kill_on_drop: false }`
[INFO] [stdout] f9e230bebb44f8cf91cde8068703ac9cffdfed983f695fe56469d41261cabbed