[INFO] fetching crate gear-stack-buffer 1.9.1...
[INFO] testing gear-stack-buffer-1.9.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate gear-stack-buffer 1.9.1 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate gear-stack-buffer 1.9.1
[INFO] finished tweaking crates.io crate gear-stack-buffer 1.9.1
[INFO] tweaked toml for crates.io crate gear-stack-buffer 1.9.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate gear-stack-buffer 1.9.1 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 gear-stack-buffer 1.9.1 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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f74522916216235e6c516c701f5d4b050ea78c65882d291dc5caaa6d2b41d288
[INFO] running `Command { std: "docker" "start" "-a" "f74522916216235e6c516c701f5d4b050ea78c65882d291dc5caaa6d2b41d288", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f74522916216235e6c516c701f5d4b050ea78c65882d291dc5caaa6d2b41d288", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f74522916216235e6c516c701f5d4b050ea78c65882d291dc5caaa6d2b41d288", kill_on_drop: false }`
[INFO] [stdout] f74522916216235e6c516c701f5d4b050ea78c65882d291dc5caaa6d2b41d288
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 16a2c63a43d8258e9e9306ea06611d76dbe78a9d16b71c57ba34fd8710812876
[INFO] running `Command { std: "docker" "start" "-a" "16a2c63a43d8258e9e9306ea06611d76dbe78a9d16b71c57ba34fd8710812876", kill_on_drop: false }`
[INFO] [stderr]    Compiling gear-stack-buffer v1.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "16a2c63a43d8258e9e9306ea06611d76dbe78a9d16b71c57ba34fd8710812876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16a2c63a43d8258e9e9306ea06611d76dbe78a9d16b71c57ba34fd8710812876", kill_on_drop: false }`
[INFO] [stdout] 16a2c63a43d8258e9e9306ea06611d76dbe78a9d16b71c57ba34fd8710812876
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] fab5353ec319ad287286a86da149c2f97f49143017a3d9012a64935356d5532b
[INFO] running `Command { std: "docker" "start" "-a" "fab5353ec319ad287286a86da149c2f97f49143017a3d9012a64935356d5532b", kill_on_drop: false }`
[INFO] [stderr]    Compiling gear-stack-buffer v1.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "fab5353ec319ad287286a86da149c2f97f49143017a3d9012a64935356d5532b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fab5353ec319ad287286a86da149c2f97f49143017a3d9012a64935356d5532b", kill_on_drop: false }`
[INFO] [stdout] fab5353ec319ad287286a86da149c2f97f49143017a3d9012a64935356d5532b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 9a7c2b29ad740981124f8c458e433060d96bf578a05bef17d06d9f7ddc9dcf7a
[INFO] running `Command { std: "docker" "start" "-a" "9a7c2b29ad740981124f8c458e433060d96bf578a05bef17d06d9f7ddc9dcf7a", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/gear_stack_buffer-845ee95b12d4ab20)
[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 gear_stack_buffer
[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" "9a7c2b29ad740981124f8c458e433060d96bf578a05bef17d06d9f7ddc9dcf7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a7c2b29ad740981124f8c458e433060d96bf578a05bef17d06d9f7ddc9dcf7a", kill_on_drop: false }`
[INFO] [stdout] 9a7c2b29ad740981124f8c458e433060d96bf578a05bef17d06d9f7ddc9dcf7a