[INFO] fetching crate async_cell 0.2.2...
[INFO] checking async_cell-0.2.2 against master#dc8fe1f81c6cf13c0987944c525b2aa81625b5d0 for pr-133502-4
[INFO] extracting crate async_cell 0.2.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate async_cell 0.2.2 on toolchain dc8fe1f81c6cf13c0987944c525b2aa81625b5d0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async_cell 0.2.2
[INFO] finished tweaking crates.io crate async_cell 0.2.2
[INFO] tweaked toml for crates.io crate async_cell 0.2.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 76 packages to latest compatible versions
[INFO] [stderr]       Adding loom v0.5.6 (available: v0.7.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot_core v0.9.10
[INFO] [stderr]   Downloaded parking_lot v0.12.3
[INFO] [stderr]   Downloaded windows-targets v0.48.5
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[INFO] [stderr]   Downloaded generator v0.7.5
[INFO] [stderr]   Downloaded quote v1.0.40
[INFO] [stderr]   Downloaded sharded-slab v0.1.7
[INFO] [stderr]   Downloaded proc-macro2 v1.0.95
[INFO] [stderr]   Downloaded cc v1.2.19
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[INFO] [stderr]   Downloaded log v0.4.27
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[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.52.6
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.52.6
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.48.5
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[INFO] [stderr]   Downloaded windows_i686_gnu v0.52.6
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8f6a06e7a45f1770b0a1fac1cdfdb7c7f2ebb40ba7fc1c4207150205777ea87
[INFO] running `Command { std: "docker" "start" "-a" "e8f6a06e7a45f1770b0a1fac1cdfdb7c7f2ebb40ba7fc1c4207150205777ea87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8f6a06e7a45f1770b0a1fac1cdfdb7c7f2ebb40ba7fc1c4207150205777ea87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8f6a06e7a45f1770b0a1fac1cdfdb7c7f2ebb40ba7fc1c4207150205777ea87", kill_on_drop: false }`
[INFO] [stdout] e8f6a06e7a45f1770b0a1fac1cdfdb7c7f2ebb40ba7fc1c4207150205777ea87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 594bb448ae4219b535800bd0b3e229d5cfa94e836291d2fd9289bad38b63aba6
[INFO] running `Command { std: "docker" "start" "-a" "594bb448ae4219b535800bd0b3e229d5cfa94e836291d2fd9289bad38b63aba6", kill_on_drop: false }`
[INFO] [stderr]     Checking async_cell v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling generator v0.7.5
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/internal.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub trait CellInner {
[INFO] [stdout]    |           --------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn new(value: State<Self::Value>) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking tracing-subscriber v0.3.19
[INFO] [stderr]     Checking loom v0.5.6
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/internal.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub trait CellInner {
[INFO] [stdout]    |           --------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn new(value: State<Self::Value>) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.71s
[INFO] running `Command { std: "docker" "inspect" "594bb448ae4219b535800bd0b3e229d5cfa94e836291d2fd9289bad38b63aba6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "594bb448ae4219b535800bd0b3e229d5cfa94e836291d2fd9289bad38b63aba6", kill_on_drop: false }`
[INFO] [stdout] 594bb448ae4219b535800bd0b3e229d5cfa94e836291d2fd9289bad38b63aba6