[INFO] fetching crate mark_last 0.9.2...
[INFO] testing mark_last-0.9.2 against 1.59.0 for beta-1.60-1
[INFO] extracting crate mark_last 0.9.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate mark_last 0.9.2 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 mark_last 0.9.2
[INFO] finished tweaking crates.io crate mark_last 0.9.2
[INFO] tweaked toml for crates.io crate mark_last 0.9.2 written to /workspace/builds/worker-8/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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] c93f7e355af61f4e34459c87d75ac3eb45e83d160f7e24ddfe8e887841ceda4b
[INFO] running `Command { std: "docker" "start" "-a" "c93f7e355af61f4e34459c87d75ac3eb45e83d160f7e24ddfe8e887841ceda4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c93f7e355af61f4e34459c87d75ac3eb45e83d160f7e24ddfe8e887841ceda4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c93f7e355af61f4e34459c87d75ac3eb45e83d160f7e24ddfe8e887841ceda4b", kill_on_drop: false }`
[INFO] [stdout] c93f7e355af61f4e34459c87d75ac3eb45e83d160f7e24ddfe8e887841ceda4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 1076ba4cc6e78fc61ada589d717766a2f5bca8d75d76c2e3a5c9f529f443969a
[INFO] running `Command { std: "docker" "start" "-a" "1076ba4cc6e78fc61ada589d717766a2f5bca8d75d76c2e3a5c9f529f443969a", kill_on_drop: false }`
[INFO] [stderr]    Compiling mark_last v0.9.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "1076ba4cc6e78fc61ada589d717766a2f5bca8d75d76c2e3a5c9f529f443969a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1076ba4cc6e78fc61ada589d717766a2f5bca8d75d76c2e3a5c9f529f443969a", kill_on_drop: false }`
[INFO] [stdout] 1076ba4cc6e78fc61ada589d717766a2f5bca8d75d76c2e3a5c9f529f443969a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 553e98e0392fa26c2055ba0b38b561b9531dbb84aa5f5e71a8c1d9f00cb6c529
[INFO] running `Command { std: "docker" "start" "-a" "553e98e0392fa26c2055ba0b38b561b9531dbb84aa5f5e71a8c1d9f00cb6c529", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mark_last v0.9.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "553e98e0392fa26c2055ba0b38b561b9531dbb84aa5f5e71a8c1d9f00cb6c529", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "553e98e0392fa26c2055ba0b38b561b9531dbb84aa5f5e71a8c1d9f00cb6c529", kill_on_drop: false }`
[INFO] [stdout] 553e98e0392fa26c2055ba0b38b561b9531dbb84aa5f5e71a8c1d9f00cb6c529
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] a08f7853248264a383c6fa1e7a7519dd10bc55e83f2099f3b58e96a8d31c3ae6
[INFO] running `Command { std: "docker" "start" "-a" "a08f7853248264a383c6fa1e7a7519dd10bc55e83f2099f3b58e96a8d31c3ae6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mark_last-88cc05e4811fd69a)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test::empty_collection ... ok
[INFO] [stdout] test test::marks_last ... ok
[INFO] [stdout] test test::marks_last_length_one ... ok
[INFO] [stderr]    Doc-tests mark_last
[INFO] [stdout] test test::marks_nothing_infinite ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.18s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - MarkLastIterator::mark_last (line 40) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.34s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a08f7853248264a383c6fa1e7a7519dd10bc55e83f2099f3b58e96a8d31c3ae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a08f7853248264a383c6fa1e7a7519dd10bc55e83f2099f3b58e96a8d31c3ae6", kill_on_drop: false }`
[INFO] [stdout] a08f7853248264a383c6fa1e7a7519dd10bc55e83f2099f3b58e96a8d31c3ae6