[INFO] fetching crate cmd_lib 1.9.3...
[INFO] checking cmd_lib-1.9.3 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate cmd_lib 1.9.3 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate cmd_lib 1.9.3 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cmd_lib 1.9.3
[INFO] finished tweaking crates.io crate cmd_lib 1.9.3
[INFO] tweaked toml for crates.io crate cmd_lib 1.9.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate cmd_lib 1.9.3 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded os_pipe v1.1.4
[INFO] [stderr]   Downloaded utf8-width v0.1.6
[INFO] [stderr]   Downloaded cmd_lib_macros v1.9.3
[INFO] [stderr]   Downloaded byte-unit v4.0.19
[INFO] [stderr]   Downloaded faccess v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6175590b39bb60cdbb931a21659bcb56496a95c1bbdb972545438ad52334b0ed
[INFO] running `Command { std: "docker" "start" "-a" "6175590b39bb60cdbb931a21659bcb56496a95c1bbdb972545438ad52334b0ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6175590b39bb60cdbb931a21659bcb56496a95c1bbdb972545438ad52334b0ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6175590b39bb60cdbb931a21659bcb56496a95c1bbdb972545438ad52334b0ed", kill_on_drop: false }`
[INFO] [stdout] 6175590b39bb60cdbb931a21659bcb56496a95c1bbdb972545438ad52334b0ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea72398a152c102112affb7895e0b81847edfe415055e277f4f73de7abe069fa
[INFO] running `Command { std: "docker" "start" "-a" "ea72398a152c102112affb7895e0b81847edfe415055e277f4f73de7abe069fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling rustix v0.38.21
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling serde v1.0.190
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking utf8-width v0.1.6
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling cmd_lib_macros v1.9.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking env_logger v0.10.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking os_pipe v1.1.4
[INFO] [stderr]     Checking faccess v0.2.4
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking cmd_lib v1.9.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `os_pipe` is imported redundantly
[INFO] [stdout]  --> src/process.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | use os_pipe::{self, PipeReader, PipeWriter};
[INFO] [stdout]   |               ^^^^ the item `os_pipe` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking byte-unit v4.0.19
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stdout] warning: the item `os_pipe` is imported redundantly
[INFO] [stdout]  --> src/process.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | use os_pipe::{self, PipeReader, PipeWriter};
[INFO] [stdout]   |               ^^^^ the item `os_pipe` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.41s
[INFO] running `Command { std: "docker" "inspect" "ea72398a152c102112affb7895e0b81847edfe415055e277f4f73de7abe069fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea72398a152c102112affb7895e0b81847edfe415055e277f4f73de7abe069fa", kill_on_drop: false }`
[INFO] [stdout] ea72398a152c102112affb7895e0b81847edfe415055e277f4f73de7abe069fa