[INFO] fetching crate history-buffer 0.1.2...
[INFO] testing history-buffer-0.1.2 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate history-buffer 0.1.2 into /workspace/builds/worker-111/source
[INFO] validating manifest of crates.io crate history-buffer 0.1.2 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 history-buffer 0.1.2
[INFO] finished tweaking crates.io crate history-buffer 0.1.2
[INFO] tweaked toml for crates.io crate history-buffer 0.1.2 written to /workspace/builds/worker-111/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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] 3792c08645ee9ed47dccd6f51f189ed257dd7f493bcc33a15c665a93e9b48b21
[INFO] running `Command { std: "docker" "start" "-a" "3792c08645ee9ed47dccd6f51f189ed257dd7f493bcc33a15c665a93e9b48b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3792c08645ee9ed47dccd6f51f189ed257dd7f493bcc33a15c665a93e9b48b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3792c08645ee9ed47dccd6f51f189ed257dd7f493bcc33a15c665a93e9b48b21", kill_on_drop: false }`
[INFO] [stdout] 3792c08645ee9ed47dccd6f51f189ed257dd7f493bcc33a15c665a93e9b48b21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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] 56d23f65a65d27d1f52c6e67f30a9c0677f7e797052dabd08270e80723612b45
[INFO] running `Command { std: "docker" "start" "-a" "56d23f65a65d27d1f52c6e67f30a9c0677f7e797052dabd08270e80723612b45", kill_on_drop: false }`
[INFO] [stderr]    Compiling history-buffer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "56d23f65a65d27d1f52c6e67f30a9c0677f7e797052dabd08270e80723612b45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56d23f65a65d27d1f52c6e67f30a9c0677f7e797052dabd08270e80723612b45", kill_on_drop: false }`
[INFO] [stdout] 56d23f65a65d27d1f52c6e67f30a9c0677f7e797052dabd08270e80723612b45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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] 90b0e36c2621874b7e43efae152bcde422cb57e3d3fb273efe3f765b98792167
[INFO] running `Command { std: "docker" "start" "-a" "90b0e36c2621874b7e43efae152bcde422cb57e3d3fb273efe3f765b98792167", kill_on_drop: false }`
[INFO] [stderr]    Compiling history-buffer v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "90b0e36c2621874b7e43efae152bcde422cb57e3d3fb273efe3f765b98792167", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90b0e36c2621874b7e43efae152bcde422cb57e3d3fb273efe3f765b98792167", kill_on_drop: false }`
[INFO] [stdout] 90b0e36c2621874b7e43efae152bcde422cb57e3d3fb273efe3f765b98792167
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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] 122e4c0c8d00a1149d9f977d0b538480f58ce5ae32b20d0944d55881506bf211
[INFO] running `Command { std: "docker" "start" "-a" "122e4c0c8d00a1149d9f977d0b538480f58ce5ae32b20d0944d55881506bf211", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/history_buffer-8bb8ca0d1b94ca9e)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests history-buffer
[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] [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" "122e4c0c8d00a1149d9f977d0b538480f58ce5ae32b20d0944d55881506bf211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "122e4c0c8d00a1149d9f977d0b538480f58ce5ae32b20d0944d55881506bf211", kill_on_drop: false }`
[INFO] [stdout] 122e4c0c8d00a1149d9f977d0b538480f58ce5ae32b20d0944d55881506bf211