[INFO] fetching crate async-peek 0.3.2...
[INFO] checking async-peek-0.3.2 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate async-peek 0.3.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate async-peek 0.3.2 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-peek 0.3.2
[INFO] finished tweaking crates.io crate async-peek 0.3.2
[INFO] tweaked toml for crates.io crate async-peek 0.3.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa63f598315c82674d6ecc4558d8d54d96ade13308e1c5624b6060ca4e5c45b3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "aa63f598315c82674d6ecc4558d8d54d96ade13308e1c5624b6060ca4e5c45b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa63f598315c82674d6ecc4558d8d54d96ade13308e1c5624b6060ca4e5c45b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa63f598315c82674d6ecc4558d8d54d96ade13308e1c5624b6060ca4e5c45b3", kill_on_drop: false }`
[INFO] [stdout] aa63f598315c82674d6ecc4558d8d54d96ade13308e1c5624b6060ca4e5c45b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 708efacef531d30dedcd9b7bdf7ac8a1071b0be73d53da4a7df592a0d3ff4c68
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "708efacef531d30dedcd9b7bdf7ac8a1071b0be73d53da4a7df592a0d3ff4c68", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]     Checking fastrand v1.4.0
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking vec-arena v0.5.2
[INFO] [stderr]     Checking vec-arena v1.1.0
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking futures-micro v0.3.1
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]     Checking ufut v0.3.1
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking async-peek v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking blocking v0.6.1
[INFO] [stderr]     Checking async-executor v0.2.1
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking polling v0.1.9
[INFO] [stderr]     Checking polling v1.1.0
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking async-fs v1.5.0
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking nb-connect v1.1.0
[INFO] [stderr]     Checking async-io v0.2.7
[INFO] [stderr]     Checking async-io v1.1.6
[INFO] [stderr]     Checking async-process v0.1.3
[INFO] [stderr]     Checking async-net v1.5.0
[INFO] [stderr]     Checking smol v0.4.3
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.14s
[INFO] running `Command { std: "docker" "inspect" "708efacef531d30dedcd9b7bdf7ac8a1071b0be73d53da4a7df592a0d3ff4c68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "708efacef531d30dedcd9b7bdf7ac8a1071b0be73d53da4a7df592a0d3ff4c68", kill_on_drop: false }`
[INFO] [stdout] 708efacef531d30dedcd9b7bdf7ac8a1071b0be73d53da4a7df592a0d3ff4c68