[INFO] fetching crate sysk-forgets 0.1.2...
[INFO] checking sysk-forgets-0.1.2 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate sysk-forgets 0.1.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate sysk-forgets 0.1.2 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sysk-forgets 0.1.2
[INFO] finished tweaking crates.io crate sysk-forgets 0.1.2
[INFO] tweaked toml for crates.io crate sysk-forgets 0.1.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate sysk-forgets 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-attributes v0.1.8
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[INFO] [stderr]   Downloaded libnghttp2-sys v0.1.4+1.41.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3fcc95d7733827101ee2c83f8eafa60ba6bd119a4959b71deac59e114287f0e1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3fcc95d7733827101ee2c83f8eafa60ba6bd119a4959b71deac59e114287f0e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fcc95d7733827101ee2c83f8eafa60ba6bd119a4959b71deac59e114287f0e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fcc95d7733827101ee2c83f8eafa60ba6bd119a4959b71deac59e114287f0e1", kill_on_drop: false }`
[INFO] [stdout] 3fcc95d7733827101ee2c83f8eafa60ba6bd119a4959b71deac59e114287f0e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f0636521a6136aa0c2314673f1b0f8ab20d74866b207711bb30b3fdb14ff929
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1f0636521a6136aa0c2314673f1b0f8ab20d74866b207711bb30b3fdb14ff929", kill_on_drop: false }`
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[INFO] [stderr]    Compiling pin-project-internal v0.4.19
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[INFO] [stderr]    Compiling darling_macro v0.10.2
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[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]     Checking futures-util v0.3.5
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[INFO] [stderr]     Checking toml v0.5.6
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[INFO] [stderr]    Compiling refinery-macros v0.3.0
[INFO] [stderr]     Checking refinery v0.3.0
[INFO] [stderr]     Checking sysk-forgets v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `StdoutLock` that must be used
[INFO] [stdout]    --> src/commands/generate.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 109 |     channel.pretty_write_to(handle, b' ', 4)?;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if unused stdout will immediately unlock
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `StdoutLock` that must be used
[INFO] [stdout]    --> src/commands/generate.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 109 |     channel.pretty_write_to(handle, b' ', 4)?;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if unused stdout will immediately unlock
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 58s
[INFO] running `Command { std: "docker" "inspect" "1f0636521a6136aa0c2314673f1b0f8ab20d74866b207711bb30b3fdb14ff929", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f0636521a6136aa0c2314673f1b0f8ab20d74866b207711bb30b3fdb14ff929", kill_on_drop: false }`
[INFO] [stdout] 1f0636521a6136aa0c2314673f1b0f8ab20d74866b207711bb30b3fdb14ff929