[INFO] fetching crate async-task 4.7.1...
[INFO] checking async-task-4.7.1 against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] extracting crate async-task 4.7.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate async-task 4.7.1 on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-task 4.7.1
[INFO] finished tweaking crates.io crate async-task 4.7.1
[INFO] tweaked toml for crates.io crate async-task 4.7.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate async-task 4.7.1 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" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.17
[INFO] [stderr]   Downloaded futures-lite v2.1.0
[INFO] [stderr]   Downloaded futures-io v0.3.29
[INFO] [stderr]   Downloaded futures-core v0.3.29
[INFO] [stderr]   Downloaded async-channel v2.1.1
[INFO] [stderr]   Downloaded event-listener v4.0.1
[INFO] [stderr]   Downloaded async-lock v3.2.0
[INFO] [stderr]   Downloaded smol v2.0.0
[INFO] [stderr]   Downloaded windows-targets v0.52.0
[INFO] [stderr]   Downloaded async-process v2.2.2
[INFO] [stderr]   Downloaded easy-parallel v3.3.1
[INFO] [stderr]   Downloaded flaky_test v0.2.2
[INFO] [stderr]   Downloaded async-fs v2.1.1
[INFO] [stderr]   Downloaded async-io v2.2.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.70
[INFO] [stderr]   Downloaded flaky_test_impl v0.2.2
[INFO] [stderr]   Downloaded polling v3.3.1
[INFO] [stderr]   Downloaded futures-util v0.3.29
[INFO] [stderr]   Downloaded portable-atomic v1.6.0
[INFO] [stderr]   Downloaded rustix v0.38.28
[INFO] [stderr]   Downloaded windows_aarch64_gnullvm v0.52.0
[INFO] [stderr]   Downloaded windows_x86_64_gnullvm v0.52.0
[INFO] [stderr]   Downloaded libc v0.2.151
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.52.0
[INFO] [stderr]   Downloaded windows_i686_gnu v0.52.0
[INFO] [stderr]   Downloaded windows_i686_msvc v0.52.0
[INFO] [stderr]   Downloaded linux-raw-sys v0.4.12
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.52.0
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.52.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c52f7fa5a386a5ccf2e98f5a5d24aac84b58477b7b83999b4405b67c964090d8
[INFO] running `Command { std: "docker" "start" "-a" "c52f7fa5a386a5ccf2e98f5a5d24aac84b58477b7b83999b4405b67c964090d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c52f7fa5a386a5ccf2e98f5a5d24aac84b58477b7b83999b4405b67c964090d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c52f7fa5a386a5ccf2e98f5a5d24aac84b58477b7b83999b4405b67c964090d8", kill_on_drop: false }`
[INFO] [stdout] c52f7fa5a386a5ccf2e98f5a5d24aac84b58477b7b83999b4405b67c964090d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2f25a0b5eefb05e1d27545ffe82f1628fdb1bb2069888218292ddddec3a4aae
[INFO] running `Command { std: "docker" "start" "-a" "e2f25a0b5eefb05e1d27545ffe82f1628fdb1bb2069888218292ddddec3a4aae", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.17
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]     Checking futures-io v0.3.29
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling rustix v0.38.28
[INFO] [stderr]     Checking linux-raw-sys v0.4.12
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]     Checking piper v0.2.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking futures-lite v2.1.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]     Checking easy-parallel v3.3.1
[INFO] [stderr]     Checking async-task v4.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking concurrent-queue v2.4.0
[INFO] [stderr]     Checking event-listener v4.0.1
[INFO] [stderr]     Checking event-listener v5.3.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking event-listener-strategy v0.4.0
[INFO] [stderr]     Checking async-lock v3.2.0
[INFO] [stderr]     Checking async-channel v2.1.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking blocking v1.5.1
[INFO] [stderr]     Checking async-executor v1.8.0
[INFO] [stderr]     Checking async-fs v2.1.1
[INFO] [stderr]    Compiling flaky_test_impl v0.2.2
[INFO] [stderr]     Checking flaky_test v0.2.2
[INFO] [stderr]     Checking polling v3.3.1
[INFO] [stderr]     Checking async-io v2.2.2
[INFO] [stderr]     Checking async-signal v0.2.5
[INFO] [stderr]     Checking async-net v2.0.0
[INFO] [stderr]     Checking async-process v2.2.2
[INFO] [stderr]     Checking smol v2.0.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.31s
[INFO] running `Command { std: "docker" "inspect" "e2f25a0b5eefb05e1d27545ffe82f1628fdb1bb2069888218292ddddec3a4aae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2f25a0b5eefb05e1d27545ffe82f1628fdb1bb2069888218292ddddec3a4aae", kill_on_drop: false }`
[INFO] [stdout] e2f25a0b5eefb05e1d27545ffe82f1628fdb1bb2069888218292ddddec3a4aae