[INFO] fetching crate async_executors 0.7.0...
[INFO] checking async_executors-0.7.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate async_executors 0.7.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate async_executors 0.7.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async_executors 0.7.0
[INFO] removed 10 missing examples
[INFO] finished tweaking crates.io crate async_executors 0.7.0
[INFO] tweaked toml for crates.io crate async_executors 0.7.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate async_executors 0.7.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.11
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.3.37
[INFO] [stderr]   Downloaded trait-set v0.3.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.66
[INFO] [stderr]   Downloaded quote v1.0.31
[INFO] [stderr]   Downloaded value-bag v1.4.1
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.37
[INFO] [stderr]   Downloaded syn v2.0.27
[INFO] [stderr]   Downloaded signal-hook v0.3.17
[INFO] [stderr]   Downloaded send_wrapper v0.4.0
[INFO] [stderr]   Downloaded nix v0.23.2
[INFO] [stderr]   Downloaded async-task v4.4.0
[INFO] [stderr]   Downloaded async-global-executor v2.3.1
[INFO] [stderr]   Downloaded async-executor v1.5.1
[INFO] [stderr]   Downloaded concurrent-queue v2.2.0
[INFO] [stderr]   Downloaded async-lock v2.7.0
[INFO] [stderr]   Downloaded object v0.31.1
[INFO] [stderr]   Downloaded rustix v0.37.23
[INFO] [stderr]   Downloaded libc v0.2.147
[INFO] [stderr]   Downloaded glommio v0.8.0
[INFO] [stderr]   Downloaded gimli v0.27.3
[INFO] [stderr]   Downloaded tokio v1.29.1
[INFO] [stderr]   Downloaded blocking v1.3.1
[INFO] [stderr]   Downloaded async-process v1.7.0
[INFO] [stderr]   Downloaded blanket v0.3.0
[INFO] [stderr]   Downloaded ahash v0.7.6
[INFO] [stderr]   Downloaded bitmaps v3.2.0
[INFO] [stderr]   Downloaded crossbeam-queue v0.3.8
[INFO] [stderr]   Downloaded lockfree v0.5.1
[INFO] [stderr]   Downloaded rlimit v0.6.2
[INFO] [stderr]   Downloaded addr2line v0.20.0
[INFO] [stderr]   Downloaded pin-project v1.1.2
[INFO] [stderr]   Downloaded pin-project-lite v0.2.10
[INFO] [stderr]   Downloaded atomic-waker v1.1.1
[INFO] [stderr]   Downloaded buddy-alloc v0.4.2
[INFO] [stderr]   Downloaded concurrent-queue v1.2.4
[INFO] [stderr]   Downloaded sketches-ddsketch v0.1.3
[INFO] [stderr]   Downloaded smallvec v1.11.0
[INFO] [stderr]   Downloaded semver v1.0.18
[INFO] [stderr]   Downloaded hermit-abi v0.3.2
[INFO] [stderr]   Downloaded pin-project-internal v1.1.2
[INFO] [stderr]   Downloaded crossbeam v0.8.2
[INFO] [stderr]   Downloaded enclose v1.1.8
[INFO] [stderr]   Downloaded parking v2.1.0
[INFO] [stderr]   Downloaded intrusive-collections v0.9.5
[INFO] [stderr]   Downloaded cache-padded v1.3.0
[INFO] [stderr]   Downloaded nanorand v0.7.0
[INFO] [stderr]   Downloaded spin v0.9.8
[INFO] [stderr]   Downloaded flume v0.10.14
[INFO] [stderr]   Downloaded waker-fn v1.1.0
[INFO] [stderr]   Downloaded memoffset v0.8.0
[INFO] [stderr]   Downloaded owned-alloc v0.2.0
[INFO] [stderr]   Downloaded backtrace v0.3.68
[INFO] [stderr]   Downloaded windows-targets v0.48.1
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 965c98c46172eac1132821acc50388e9a02e4bb7bc63753331db1d35d3df29a7
[INFO] running `Command { std: "docker" "start" "-a" "965c98c46172eac1132821acc50388e9a02e4bb7bc63753331db1d35d3df29a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "965c98c46172eac1132821acc50388e9a02e4bb7bc63753331db1d35d3df29a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "965c98c46172eac1132821acc50388e9a02e4bb7bc63753331db1d35d3df29a7", kill_on_drop: false }`
[INFO] [stdout] 965c98c46172eac1132821acc50388e9a02e4bb7bc63753331db1d35d3df29a7
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b961202431c1fbf394a003163a40f4372d9f47f3ccf599c0de41fa5fce3dfab
[INFO] running `Command { std: "docker" "start" "-a" "2b961202431c1fbf394a003163a40f4372d9f47f3ccf599c0de41fa5fce3dfab", 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]    Compiling futures-task v0.3.28
[INFO] [stderr]     Checking pin-project-lite v0.2.10
[INFO] [stderr]    Compiling semver v1.0.18
[INFO] [stderr]     Checking futures-channel v0.3.28
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking tracing-subscriber v0.3.17
[INFO] [stderr]    Compiling async_executors v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.31
[INFO] [stderr]    Compiling syn v2.0.27
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]    Compiling trait-set v0.3.0
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling pin-project-internal v1.1.2
[INFO] [stderr]    Compiling blanket v0.3.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking futures-util v0.3.28
[INFO] [stderr]     Checking pin-project v1.1.2
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.92s
[INFO] running `Command { std: "docker" "inspect" "2b961202431c1fbf394a003163a40f4372d9f47f3ccf599c0de41fa5fce3dfab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b961202431c1fbf394a003163a40f4372d9f47f3ccf599c0de41fa5fce3dfab", kill_on_drop: false }`
[INFO] [stdout] 2b961202431c1fbf394a003163a40f4372d9f47f3ccf599c0de41fa5fce3dfab