[INFO] fetching crate async_once 0.2.1...
[INFO] checking async_once-0.2.1 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate async_once 0.2.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate async_once 0.2.1 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async_once 0.2.1
[INFO] finished tweaking crates.io crate async_once 0.2.1
[INFO] tweaked toml for crates.io crate async_once 0.2.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 747609ad6920b7e9ed67a251e5b5845cc682e4fda9456455cd35cedf094d96d5
[INFO] running `Command { std: "docker" "start" "-a" "747609ad6920b7e9ed67a251e5b5845cc682e4fda9456455cd35cedf094d96d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "747609ad6920b7e9ed67a251e5b5845cc682e4fda9456455cd35cedf094d96d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "747609ad6920b7e9ed67a251e5b5845cc682e4fda9456455cd35cedf094d96d5", kill_on_drop: false }`
[INFO] [stdout] 747609ad6920b7e9ed67a251e5b5845cc682e4fda9456455cd35cedf094d96d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46a0b31fa257e0c20e3f680ecfc80a12bd6140c3aa97623a4c9a3baecbadac8f
[INFO] running `Command { std: "docker" "start" "-a" "46a0b31fa257e0c20e3f680ecfc80a12bd6140c3aa97623a4c9a3baecbadac8f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.75
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]    Compiling bumpalo v3.7.0
[INFO] [stderr]     Checking waker-fn v1.1.0
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[INFO] [stderr]     Checking parking v2.0.0
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[INFO] [stderr]     Checking futures-io v0.3.16
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling serde v1.0.127
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[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]    Compiling wasm-bindgen v0.2.75
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[INFO] [stderr]    Compiling rayon-core v1.9.1
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[INFO] [stderr]     Checking either v1.6.1
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[INFO] [stderr]    Compiling serde_derive v1.0.127
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[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking async_once v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking async-lock v2.4.0
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[INFO] [stderr]     Checking itertools v0.10.1
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[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling tokio v0.3.7
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking async-fs v1.5.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking socket2 v0.4.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.25
[INFO] [stderr]    Compiling cast v0.2.7
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[INFO] [stderr]     Checking plotters v0.3.1
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[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.75
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[INFO] [stderr]     Checking async-std v1.9.0
[INFO] [stderr]     Checking smol v1.2.5
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.75
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.75
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stderr]     Checking js-sys v0.3.52
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
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[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.25
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.25
[INFO] [stderr]     Checking gloo-timers v0.2.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.04s
[INFO] running `Command { std: "docker" "inspect" "46a0b31fa257e0c20e3f680ecfc80a12bd6140c3aa97623a4c9a3baecbadac8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46a0b31fa257e0c20e3f680ecfc80a12bd6140c3aa97623a4c9a3baecbadac8f", kill_on_drop: false }`
[INFO] [stdout] 46a0b31fa257e0c20e3f680ecfc80a12bd6140c3aa97623a4c9a3baecbadac8f