[INFO] fetching crate async-gcode 0.2.0...
[INFO] checking async-gcode-0.2.0 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate async-gcode 0.2.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate async-gcode 0.2.0 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-gcode 0.2.0
[INFO] finished tweaking crates.io crate async-gcode 0.2.0
[INFO] tweaked toml for crates.io crate async-gcode 0.2.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate async-gcode 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0342c59579d3c2393b32684798d6bbe5657c94273ab7acccfa7ff38ca459813
[INFO] running `Command { std: "docker" "start" "-a" "d0342c59579d3c2393b32684798d6bbe5657c94273ab7acccfa7ff38ca459813", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0342c59579d3c2393b32684798d6bbe5657c94273ab7acccfa7ff38ca459813", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0342c59579d3c2393b32684798d6bbe5657c94273ab7acccfa7ff38ca459813", kill_on_drop: false }`
[INFO] [stdout] d0342c59579d3c2393b32684798d6bbe5657c94273ab7acccfa7ff38ca459813
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0853c4aafffdc8aee4fbf9a1c1617b58f0a0286b0c683ef5dcdad00b1c55862c
[INFO] running `Command { std: "docker" "start" "-a" "0853c4aafffdc8aee4fbf9a1c1617b58f0a0286b0c683ef5dcdad00b1c55862c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking async-gcode v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/stream.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     pin_project! {
[INFO] [stdout] 42 | |         pub(crate) struct PushBack<S: TryStream> {
[INFO] [stdout] 43 | |             #[pin]
[INFO] [stdout] 44 | |             stream: S,
[INFO] [stdout] 45 | |             val: Option<S::Ok>,
[INFO] [stdout] 46 | |         }
[INFO] [stdout] 47 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/stream.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     pin_project! {
[INFO] [stdout] 42 | |         pub(crate) struct PushBack<S: TryStream> {
[INFO] [stdout] 43 | |             #[pin]
[INFO] [stdout] 44 | |             stream: S,
[INFO] [stdout] 45 | |             val: Option<S::Ok>,
[INFO] [stdout] 46 | |         }
[INFO] [stdout] 47 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/stream.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     pin_project! {
[INFO] [stdout] 42 | |         pub(crate) struct PushBack<S: TryStream> {
[INFO] [stdout] 43 | |             #[pin]
[INFO] [stdout] 44 | |             stream: S,
[INFO] [stdout] 45 | |             val: Option<S::Ok>,
[INFO] [stdout] 46 | |         }
[INFO] [stdout] 47 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/stream.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     pin_project! {
[INFO] [stdout] 42 | |         pub(crate) struct PushBack<S: TryStream> {
[INFO] [stdout] 43 | |             #[pin]
[INFO] [stdout] 44 | |             stream: S,
[INFO] [stdout] 45 | |             val: Option<S::Ok>,
[INFO] [stdout] 46 | |         }
[INFO] [stdout] 47 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.81s
[INFO] running `Command { std: "docker" "inspect" "0853c4aafffdc8aee4fbf9a1c1617b58f0a0286b0c683ef5dcdad00b1c55862c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0853c4aafffdc8aee4fbf9a1c1617b58f0a0286b0c683ef5dcdad00b1c55862c", kill_on_drop: false }`
[INFO] [stdout] 0853c4aafffdc8aee4fbf9a1c1617b58f0a0286b0c683ef5dcdad00b1c55862c