[INFO] fetching crate yield-progress 0.1.4...
[INFO] checking yield-progress-0.1.4 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate yield-progress 0.1.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate yield-progress 0.1.4 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 yield-progress 0.1.4
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate yield-progress 0.1.4
[INFO] tweaked toml for crates.io crate yield-progress 0.1.4 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate yield-progress 0.1.4 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3c1963a6047c26da33359c667debb21c82ad98857a6e46241b4f15dae45ef961
[INFO] running `Command { std: "docker" "start" "-a" "3c1963a6047c26da33359c667debb21c82ad98857a6e46241b4f15dae45ef961", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c1963a6047c26da33359c667debb21c82ad98857a6e46241b4f15dae45ef961", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c1963a6047c26da33359c667debb21c82ad98857a6e46241b4f15dae45ef961", kill_on_drop: false }`
[INFO] [stdout] 3c1963a6047c26da33359c667debb21c82ad98857a6e46241b4f15dae45ef961
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 4a0ed78cea6864d1603b5a2ce5e859d4fb718679d38eb203de5af75bbae7ab96
[INFO] running `Command { std: "docker" "start" "-a" "4a0ed78cea6864d1603b5a2ce5e859d4fb718679d38eb203de5af75bbae7ab96", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking pin-project-lite v0.2.12
[INFO] [stderr]     Checking yield-progress v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Mutexish` is never used
[INFO] [stdout]   --> src/maybe_sync.rs:13:22
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub(crate) trait Mutexish {}
[INFO] [stdout]    |                      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stdout] warning: trait `Mutexish` is never used
[INFO] [stdout]   --> src/maybe_sync.rs:13:22
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub(crate) trait Mutexish {}
[INFO] [stdout]    |                      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 4.19s
[INFO] running `Command { std: "docker" "inspect" "4a0ed78cea6864d1603b5a2ce5e859d4fb718679d38eb203de5af75bbae7ab96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a0ed78cea6864d1603b5a2ce5e859d4fb718679d38eb203de5af75bbae7ab96", kill_on_drop: false }`
[INFO] [stdout] 4a0ed78cea6864d1603b5a2ce5e859d4fb718679d38eb203de5af75bbae7ab96