[INFO] fetching crate rust_learn 0.1.1...
[INFO] testing rust_learn-0.1.1 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate rust_learn 0.1.1 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate rust_learn 0.1.1 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 rust_learn 0.1.1
[INFO] finished tweaking crates.io crate rust_learn 0.1.1
[INFO] tweaked toml for crates.io crate rust_learn 0.1.1 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate crates.io crate rust_learn 0.1.1 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-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 9aed7540d32ded547f1ac19ce06eda4c98920bc48cd0002079abdbd26224f83c
[INFO] running `Command { std: "docker" "start" "-a" "9aed7540d32ded547f1ac19ce06eda4c98920bc48cd0002079abdbd26224f83c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9aed7540d32ded547f1ac19ce06eda4c98920bc48cd0002079abdbd26224f83c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aed7540d32ded547f1ac19ce06eda4c98920bc48cd0002079abdbd26224f83c", kill_on_drop: false }`
[INFO] [stdout] 9aed7540d32ded547f1ac19ce06eda4c98920bc48cd0002079abdbd26224f83c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 678b80711c0644b0811c877a716226a29796f8de2379e95b612fe65e6a5a20f6
[INFO] running `Command { std: "docker" "start" "-a" "678b80711c0644b0811c877a716226a29796f8de2379e95b612fe65e6a5a20f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_learn v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "678b80711c0644b0811c877a716226a29796f8de2379e95b612fe65e6a5a20f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "678b80711c0644b0811c877a716226a29796f8de2379e95b612fe65e6a5a20f6", kill_on_drop: false }`
[INFO] [stdout] 678b80711c0644b0811c877a716226a29796f8de2379e95b612fe65e6a5a20f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 1a7fc6672d2b2ee1c293b568c2a3ad6a1702bd503e9406e9039489ac7fb6da22
[INFO] running `Command { std: "docker" "start" "-a" "1a7fc6672d2b2ee1c293b568c2a3ad6a1702bd503e9406e9039489ac7fb6da22", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_learn v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "1a7fc6672d2b2ee1c293b568c2a3ad6a1702bd503e9406e9039489ac7fb6da22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a7fc6672d2b2ee1c293b568c2a3ad6a1702bd503e9406e9039489ac7fb6da22", kill_on_drop: false }`
[INFO] [stdout] 1a7fc6672d2b2ee1c293b568c2a3ad6a1702bd503e9406e9039489ac7fb6da22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] d4cdfb6a69d4ce772206831a0a19dd6180fcff31982e2fe932f87c53e329574f
[INFO] running `Command { std: "docker" "start" "-a" "d4cdfb6a69d4ce772206831a0a19dd6180fcff31982e2fe932f87c53e329574f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_learn-76906ca52d7bbd9c)
[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" "d4cdfb6a69d4ce772206831a0a19dd6180fcff31982e2fe932f87c53e329574f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4cdfb6a69d4ce772206831a0a19dd6180fcff31982e2fe932f87c53e329574f", kill_on_drop: false }`
[INFO] [stdout] d4cdfb6a69d4ce772206831a0a19dd6180fcff31982e2fe932f87c53e329574f