[INFO] fetching crate rust-arc-gc 0.2.1...
[INFO] testing rust-arc-gc-0.2.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate rust-arc-gc 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate rust-arc-gc 0.2.1
[INFO] finished tweaking crates.io crate rust-arc-gc 0.2.1
[INFO] tweaked toml for crates.io crate rust-arc-gc 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust-arc-gc 0.2.1 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] crate crates.io crate rust-arc-gc 0.2.1 already has a lockfile, it will not be regenerated
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 7e3930c8fa6cf0aa3469fcd4e4217c08289d264a1bda72d3eb9f242cb8e2808d
[INFO] running `Command { std: "docker" "start" "-a" "7e3930c8fa6cf0aa3469fcd4e4217c08289d264a1bda72d3eb9f242cb8e2808d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e3930c8fa6cf0aa3469fcd4e4217c08289d264a1bda72d3eb9f242cb8e2808d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e3930c8fa6cf0aa3469fcd4e4217c08289d264a1bda72d3eb9f242cb8e2808d", kill_on_drop: false }`
[INFO] [stdout] 7e3930c8fa6cf0aa3469fcd4e4217c08289d264a1bda72d3eb9f242cb8e2808d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 0d276f84195794c4c53890d3db395df1a2c0cc6fc26c86fe3a2d473417f8aeb1
[INFO] running `Command { std: "docker" "start" "-a" "0d276f84195794c4c53890d3db395df1a2c0cc6fc26c86fe3a2d473417f8aeb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-arc-gc v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "0d276f84195794c4c53890d3db395df1a2c0cc6fc26c86fe3a2d473417f8aeb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d276f84195794c4c53890d3db395df1a2c0cc6fc26c86fe3a2d473417f8aeb1", kill_on_drop: false }`
[INFO] [stdout] 0d276f84195794c4c53890d3db395df1a2c0cc6fc26c86fe3a2d473417f8aeb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 953c6cc5f5b5882d6b8f7227e58af4904088a4ebd27dcbb2b660b9bcc224d26e
[INFO] running `Command { std: "docker" "start" "-a" "953c6cc5f5b5882d6b8f7227e58af4904088a4ebd27dcbb2b660b9bcc224d26e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-arc-gc v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "953c6cc5f5b5882d6b8f7227e58af4904088a4ebd27dcbb2b660b9bcc224d26e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "953c6cc5f5b5882d6b8f7227e58af4904088a4ebd27dcbb2b660b9bcc224d26e", kill_on_drop: false }`
[INFO] [stdout] 953c6cc5f5b5882d6b8f7227e58af4904088a4ebd27dcbb2b660b9bcc224d26e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f0f31475b57ccd5ca2c3f1337cbfbe6b4ced3eafa7fb740810f28ffb4d229173
[INFO] running `Command { std: "docker" "start" "-a" "f0f31475b57ccd5ca2c3f1337cbfbe6b4ced3eafa7fb740810f28ffb4d229173", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/arc_gc-f3a089a757d6708f)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test gc::tests::test_gc ... ok
[INFO] [stdout] test gc::tests::test_memory_threshold_gc ... ok
[INFO] [stdout] test gc::tests::test_combined_thresholds_gc ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests arc_gc
[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" "f0f31475b57ccd5ca2c3f1337cbfbe6b4ced3eafa7fb740810f28ffb4d229173", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0f31475b57ccd5ca2c3f1337cbfbe6b4ced3eafa7fb740810f28ffb4d229173", kill_on_drop: false }`
[INFO] [stdout] f0f31475b57ccd5ca2c3f1337cbfbe6b4ced3eafa7fb740810f28ffb4d229173