[INFO] fetching crate async_executors 0.4.2...
[INFO] checking async_executors-0.4.2 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate async_executors 0.4.2 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate async_executors 0.4.2 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async_executors 0.4.2
[INFO] removed 10 missing examples
[INFO] finished tweaking crates.io crate async_executors 0.4.2
[INFO] tweaked toml for crates.io crate async_executors 0.4.2 written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] crate crates.io crate async_executors 0.4.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "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 enclose v1.1.8
[INFO] [stderr]   Downloaded rlimit v0.3.0
[INFO] [stderr]   Downloaded membarrier v0.2.2
[INFO] [stderr]   Downloaded ahash v0.5.10
[INFO] [stderr]   Downloaded buddy-alloc v0.4.1
[INFO] [stderr]   Downloaded trait-set v0.2.0
[INFO] [stderr]   Downloaded intrusive-collections v0.9.1
[INFO] [stderr]   Downloaded glommio v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e3a40b187d486a9352e721e2feef7a44dc11649f92becbcaf4ae877696765e0
[INFO] running `Command { std: "docker" "start" "-a" "0e3a40b187d486a9352e721e2feef7a44dc11649f92becbcaf4ae877696765e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e3a40b187d486a9352e721e2feef7a44dc11649f92becbcaf4ae877696765e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e3a40b187d486a9352e721e2feef7a44dc11649f92becbcaf4ae877696765e0", kill_on_drop: false }`
[INFO] [stdout] 0e3a40b187d486a9352e721e2feef7a44dc11649f92becbcaf4ae877696765e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 193b62077e0492a14022b6ec6870174004ba08c2a107a0c68deacbce2e80d7b4
[INFO] running `Command { std: "docker" "start" "-a" "193b62077e0492a14022b6ec6870174004ba08c2a107a0c68deacbce2e80d7b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling libc v0.2.96
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling semver v1.0.3
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking tracing-subscriber v0.2.18
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]    Compiling async_executors v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling blanket v0.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling trait-set v0.2.0
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking futures v0.3.15
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.17s
[INFO] running `Command { std: "docker" "inspect" "193b62077e0492a14022b6ec6870174004ba08c2a107a0c68deacbce2e80d7b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "193b62077e0492a14022b6ec6870174004ba08c2a107a0c68deacbce2e80d7b4", kill_on_drop: false }`
[INFO] [stdout] 193b62077e0492a14022b6ec6870174004ba08c2a107a0c68deacbce2e80d7b4