[INFO] fetching crate niche 0.1.0...
[INFO] testing niche-0.1.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate niche 0.1.0 into /workspace/builds/worker-70/source
[INFO] validating manifest of crates.io crate niche 0.1.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate niche 0.1.0
[INFO] finished tweaking crates.io crate niche 0.1.0
[INFO] tweaked toml for crates.io crate niche 0.1.0 written to /workspace/builds/worker-70/source/Cargo.toml
[INFO] crate crates.io crate niche 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0457a4a6ec7fe6603c79175989be68fec2eb8f2e3b2f04b23efdc321e4fd2ea8
[INFO] running `Command { std: "docker" "start" "-a" "0457a4a6ec7fe6603c79175989be68fec2eb8f2e3b2f04b23efdc321e4fd2ea8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0457a4a6ec7fe6603c79175989be68fec2eb8f2e3b2f04b23efdc321e4fd2ea8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0457a4a6ec7fe6603c79175989be68fec2eb8f2e3b2f04b23efdc321e4fd2ea8", kill_on_drop: false }`
[INFO] [stdout] 0457a4a6ec7fe6603c79175989be68fec2eb8f2e3b2f04b23efdc321e4fd2ea8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f2bd54728443d16d69a68b9713d9cc0e74ac198708505db793aee7160d078f6
[INFO] running `Command { std: "docker" "start" "-a" "2f2bd54728443d16d69a68b9713d9cc0e74ac198708505db793aee7160d078f6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling niche v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.89s
[INFO] running `Command { std: "docker" "inspect" "2f2bd54728443d16d69a68b9713d9cc0e74ac198708505db793aee7160d078f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f2bd54728443d16d69a68b9713d9cc0e74ac198708505db793aee7160d078f6", kill_on_drop: false }`
[INFO] [stdout] 2f2bd54728443d16d69a68b9713d9cc0e74ac198708505db793aee7160d078f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6aa0979c18ab108037c927dbe228e98e1c3d3e527ce896a9f2edebb46d442bcd
[INFO] running `Command { std: "docker" "start" "-a" "6aa0979c18ab108037c927dbe228e98e1c3d3e527ce896a9f2edebb46d442bcd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling niche v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "6aa0979c18ab108037c927dbe228e98e1c3d3e527ce896a9f2edebb46d442bcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aa0979c18ab108037c927dbe228e98e1c3d3e527ce896a9f2edebb46d442bcd", kill_on_drop: false }`
[INFO] [stdout] 6aa0979c18ab108037c927dbe228e98e1c3d3e527ce896a9f2edebb46d442bcd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5965ae1ab858bdc57ad87fa631cb7f9a95f738b1f76b04e9d94e99d8635eb99a
[INFO] running `Command { std: "docker" "start" "-a" "5965ae1ab858bdc57ad87fa631cb7f9a95f738b1f76b04e9d94e99d8635eb99a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/niche-8125712b295deedd)
[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" "5965ae1ab858bdc57ad87fa631cb7f9a95f738b1f76b04e9d94e99d8635eb99a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5965ae1ab858bdc57ad87fa631cb7f9a95f738b1f76b04e9d94e99d8635eb99a", kill_on_drop: false }`
[INFO] [stdout] 5965ae1ab858bdc57ad87fa631cb7f9a95f738b1f76b04e9d94e99d8635eb99a