[INFO] fetching crate cyclic_list 0.1.0...
[INFO] testing cyclic_list-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate cyclic_list 0.1.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate cyclic_list 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cyclic_list 0.1.0
[INFO] finished tweaking crates.io crate cyclic_list 0.1.0
[INFO] tweaked toml for crates.io crate cyclic_list 0.1.0 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a5a98d5f44fd37688a41b9aafab4153afb02babfd44368f4b3fc54f302f0605
[INFO] running `Command { std: "docker" "start" "-a" "0a5a98d5f44fd37688a41b9aafab4153afb02babfd44368f4b3fc54f302f0605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a5a98d5f44fd37688a41b9aafab4153afb02babfd44368f4b3fc54f302f0605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a5a98d5f44fd37688a41b9aafab4153afb02babfd44368f4b3fc54f302f0605", kill_on_drop: false }`
[INFO] [stdout] 0a5a98d5f44fd37688a41b9aafab4153afb02babfd44368f4b3fc54f302f0605
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91a1802a82f6d1d08bf4b2121874761e448105280f7895c3f93be7b5accb2aac
[INFO] running `Command { std: "docker" "start" "-a" "91a1802a82f6d1d08bf4b2121874761e448105280f7895c3f93be7b5accb2aac", kill_on_drop: false }`
[INFO] [stderr]    Compiling cyclic_list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "91a1802a82f6d1d08bf4b2121874761e448105280f7895c3f93be7b5accb2aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91a1802a82f6d1d08bf4b2121874761e448105280f7895c3f93be7b5accb2aac", kill_on_drop: false }`
[INFO] [stdout] 91a1802a82f6d1d08bf4b2121874761e448105280f7895c3f93be7b5accb2aac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e7acf355c2e20207ba5cd5f252ca24c1935d8033bdc4ff5820543e98dd10c7e
[INFO] running `Command { std: "docker" "start" "-a" "3e7acf355c2e20207ba5cd5f252ca24c1935d8033bdc4ff5820543e98dd10c7e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cyclic_list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "3e7acf355c2e20207ba5cd5f252ca24c1935d8033bdc4ff5820543e98dd10c7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e7acf355c2e20207ba5cd5f252ca24c1935d8033bdc4ff5820543e98dd10c7e", kill_on_drop: false }`
[INFO] [stdout] 3e7acf355c2e20207ba5cd5f252ca24c1935d8033bdc4ff5820543e98dd10c7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8cd0beaa1cb6bd1a71dba6aaddb41514a5b27d17a2136bae45ccba0c3b21ba34
[INFO] running `Command { std: "docker" "start" "-a" "8cd0beaa1cb6bd1a71dba6aaddb41514a5b27d17a2136bae45ccba0c3b21ba34", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cyclic_list-f7bf46727cbb4aaa)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test list::cursor::tests::cursor_insert_and_remove ... ok
[INFO] [stdout] test list::cursor::tests::cursor_read ... ok
[INFO] [stdout] test list::cursor::tests::cursor_write ... ok
[INFO] [stdout] test list::cursor::tests::cursor_iter ... ok
[INFO] [stdout] test list::cursor::tests::cursor_move ... ok
[INFO] [stdout] test list::tests::list_create ... ok
[INFO] [stdout] test list::tests::list_drop ... ok
[INFO] [stdout] test list::tests::list_insert_and_remove ... ok
[INFO] [stdout] test list::tests::list_push_and_pop ... ok
[INFO] [stdout] test list::iterator::tests::test_iter ... ok
[INFO] [stdout] test list::tests::list_split_and_append ... ok
[INFO] [stdout] test list::tests::list_splice ... ok
[INFO] [stdout] test list::tests::list_len ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cyclic_list
[INFO] [stdout] 
[INFO] [stdout] running 78 tests
[INFO] [stdout] test src/list/cursor.rs - list::cursor::Cursor (line 19) ... ok
[INFO] [stdout] test src/list/cursor.rs - list::cursor::CursorMut (line 139) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 124) ... ok
[INFO] [stdout] test src/list/cursor.rs - list::cursor::Cursor::previous (line 659) ... ok
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name cyclic_list --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern cyclic_list=/opt/rustwide/target/debug/deps/libcyclic_list-880c87c871d66cfe.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="length"' --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "8cd0beaa1cb6bd1a71dba6aaddb41514a5b27d17a2136bae45ccba0c3b21ba34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cd0beaa1cb6bd1a71dba6aaddb41514a5b27d17a2136bae45ccba0c3b21ba34", kill_on_drop: false }`
[INFO] [stdout] 8cd0beaa1cb6bd1a71dba6aaddb41514a5b27d17a2136bae45ccba0c3b21ba34