[INFO] fetching crate loopcell 1.0.0...
[INFO] testing loopcell-1.0.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate loopcell 1.0.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate loopcell 1.0.0
[INFO] finished tweaking crates.io crate loopcell 1.0.0
[INFO] tweaked toml for crates.io crate loopcell 1.0.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate loopcell 1.0.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded option-lock v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f63de41191cdf2c37c27e6264010feffc15fbf27b29c6630c7b51465eb89fbbb
[INFO] running `Command { std: "docker" "start" "-a" "f63de41191cdf2c37c27e6264010feffc15fbf27b29c6630c7b51465eb89fbbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f63de41191cdf2c37c27e6264010feffc15fbf27b29c6630c7b51465eb89fbbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f63de41191cdf2c37c27e6264010feffc15fbf27b29c6630c7b51465eb89fbbb", kill_on_drop: false }`
[INFO] [stdout] f63de41191cdf2c37c27e6264010feffc15fbf27b29c6630c7b51465eb89fbbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53f2990dc9346fef0364abf1ca8e068cc282b4d2d17a9065a00b4eed0babb95e
[INFO] running `Command { std: "docker" "start" "-a" "53f2990dc9346fef0364abf1ca8e068cc282b4d2d17a9065a00b4eed0babb95e", kill_on_drop: false }`
[INFO] [stderr]    Compiling option-lock v0.3.1
[INFO] [stderr]    Compiling loopcell v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "53f2990dc9346fef0364abf1ca8e068cc282b4d2d17a9065a00b4eed0babb95e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53f2990dc9346fef0364abf1ca8e068cc282b4d2d17a9065a00b4eed0babb95e", kill_on_drop: false }`
[INFO] [stdout] 53f2990dc9346fef0364abf1ca8e068cc282b4d2d17a9065a00b4eed0babb95e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6cc12f24dd6c30838c51fc98c617bc25e222e9d9c66deb6b67397e4738c0f25
[INFO] running `Command { std: "docker" "start" "-a" "f6cc12f24dd6c30838c51fc98c617bc25e222e9d9c66deb6b67397e4738c0f25", kill_on_drop: false }`
[INFO] [stderr]    Compiling loopcell v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "f6cc12f24dd6c30838c51fc98c617bc25e222e9d9c66deb6b67397e4738c0f25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6cc12f24dd6c30838c51fc98c617bc25e222e9d9c66deb6b67397e4738c0f25", kill_on_drop: false }`
[INFO] [stdout] f6cc12f24dd6c30838c51fc98c617bc25e222e9d9c66deb6b67397e4738c0f25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 60a157ec00ed7813b53e5ee178ffaa20c9f4d44eb26ea15d55e908afd55f137e
[INFO] running `Command { std: "docker" "start" "-a" "60a157ec00ed7813b53e5ee178ffaa20c9f4d44eb26ea15d55e908afd55f137e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/loopcell-006bf256b05ae3f3)
[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] [stderr]    Doc-tests loopcell
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 17) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.28s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "60a157ec00ed7813b53e5ee178ffaa20c9f4d44eb26ea15d55e908afd55f137e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60a157ec00ed7813b53e5ee178ffaa20c9f4d44eb26ea15d55e908afd55f137e", kill_on_drop: false }`
[INFO] [stdout] 60a157ec00ed7813b53e5ee178ffaa20c9f4d44eb26ea15d55e908afd55f137e