[INFO] fetching crate combu 1.1.23...
[INFO] checking combu-1.1.23 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate combu 1.1.23 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate combu 1.1.23 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate combu 1.1.23
[INFO] finished tweaking crates.io crate combu 1.1.23
[INFO] tweaked toml for crates.io crate combu 1.1.23 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate combu 1.1.23 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac5c56b81c5cd62b48fe95a6380866b09cbf7c0df9335d52ec82f6eb3ff22d6e
[INFO] running `Command { std: "docker" "start" "-a" "ac5c56b81c5cd62b48fe95a6380866b09cbf7c0df9335d52ec82f6eb3ff22d6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac5c56b81c5cd62b48fe95a6380866b09cbf7c0df9335d52ec82f6eb3ff22d6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac5c56b81c5cd62b48fe95a6380866b09cbf7c0df9335d52ec82f6eb3ff22d6e", kill_on_drop: false }`
[INFO] [stdout] ac5c56b81c5cd62b48fe95a6380866b09cbf7c0df9335d52ec82f6eb3ff22d6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbc3116827acb52ff1ba49b9a9e4952603e6c9f3ccbbd0a30b70e30f17c4b176
[INFO] running `Command { std: "docker" "start" "-a" "fbc3116827acb52ff1ba49b9a9e4952603e6c9f3ccbbd0a30b70e30f17c4b176", kill_on_drop: false }`
[INFO] [stderr]     Checking combu v1.1.23 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]     --> src/parser.rs:1705:5
[INFO] [stdout]      |
[INFO] [stdout] 1705 |                 format!("The flag --{} is an unknown flag.", flag_arg.name());
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]      = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]     --> src/parser.rs:1705:5
[INFO] [stdout]      |
[INFO] [stdout] 1705 |                 format!("The flag --{} is an unknown flag.", flag_arg.name());
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]      = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "fbc3116827acb52ff1ba49b9a9e4952603e6c9f3ccbbd0a30b70e30f17c4b176", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbc3116827acb52ff1ba49b9a9e4952603e6c9f3ccbbd0a30b70e30f17c4b176", kill_on_drop: false }`
[INFO] [stdout] fbc3116827acb52ff1ba49b9a9e4952603e6c9f3ccbbd0a30b70e30f17c4b176
[INFO] checking combu-1.1.23 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate combu 1.1.23 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate combu 1.1.23 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate combu 1.1.23
[INFO] finished tweaking crates.io crate combu 1.1.23
[INFO] tweaked toml for crates.io crate combu 1.1.23 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate combu 1.1.23 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70469580e2a906c9a58caea32b3d4a59ba35cffcaa287cea3b7dadb3a56523f4
[INFO] running `Command { std: "docker" "start" "-a" "70469580e2a906c9a58caea32b3d4a59ba35cffcaa287cea3b7dadb3a56523f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70469580e2a906c9a58caea32b3d4a59ba35cffcaa287cea3b7dadb3a56523f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70469580e2a906c9a58caea32b3d4a59ba35cffcaa287cea3b7dadb3a56523f4", kill_on_drop: false }`
[INFO] [stdout] 70469580e2a906c9a58caea32b3d4a59ba35cffcaa287cea3b7dadb3a56523f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dedcc57f3c92d73bdf0cdd69f44515a598b74f11c0c91e3f1872b05ae31bf900
[INFO] running `Command { std: "docker" "start" "-a" "dedcc57f3c92d73bdf0cdd69f44515a598b74f11c0c91e3f1872b05ae31bf900", kill_on_drop: false }`
[INFO] [stderr]     Checking combu v1.1.23 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]     --> src/parser.rs:1705:5
[INFO] [stdout]      |
[INFO] [stdout] 1705 |                 format!("The flag --{} is an unknown flag.", flag_arg.name());
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]      = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]     --> src/parser.rs:1705:5
[INFO] [stdout]      |
[INFO] [stdout] 1705 |                 format!("The flag --{} is an unknown flag.", flag_arg.name());
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]      = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "dedcc57f3c92d73bdf0cdd69f44515a598b74f11c0c91e3f1872b05ae31bf900", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dedcc57f3c92d73bdf0cdd69f44515a598b74f11c0c91e3f1872b05ae31bf900", kill_on_drop: false }`
[INFO] [stdout] dedcc57f3c92d73bdf0cdd69f44515a598b74f11c0c91e3f1872b05ae31bf900