[INFO] fetching crate async-mutex 1.4.0...
[INFO] checking async-mutex-1.4.0 against try#81275a1445c7502a974118e0c69b795ab60be991 for pr-80243
[INFO] extracting crate async-mutex 1.4.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate async-mutex 1.4.0 on toolchain 81275a1445c7502a974118e0c69b795ab60be991
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-mutex 1.4.0
[INFO] finished tweaking crates.io crate async-mutex 1.4.0
[INFO] tweaked toml for crates.io crate async-mutex 1.4.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate async-mutex 1.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "fetch" "--locked" "--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 async-global-executor v1.2.1
[INFO] [stderr]   Downloaded async-std v1.6.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7520cc55de15fb3e5b683499383d362a9170c4646c0bbe4584fefd0cf9677917
[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" "7520cc55de15fb3e5b683499383d362a9170c4646c0bbe4584fefd0cf9677917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7520cc55de15fb3e5b683499383d362a9170c4646c0bbe4584fefd0cf9677917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7520cc55de15fb3e5b683499383d362a9170c4646c0bbe4584fefd0cf9677917", kill_on_drop: false }`
[INFO] [stdout] 7520cc55de15fb3e5b683499383d362a9170c4646c0bbe4584fefd0cf9677917
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15ce23e5c49b1a3f4bb136702eeea97e4b7466b78c5b8c8704077a127fed35af
[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" "15ce23e5c49b1a3f4bb136702eeea97e4b7466b78c5b8c8704077a127fed35af", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]     Checking fastrand v1.3.5
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]     Checking async-task v4.0.2
[INFO] [stderr]     Checking async-mutex v1.3.0
[INFO] [stderr]     Checking async-mutex v1.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]     Checking async-channel v1.4.2
[INFO] [stderr]     Checking nb-connect v1.0.0
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking socket2 v0.3.15
[INFO] [stderr]     Checking polling v1.1.0
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking futures-lite v1.8.0
[INFO] [stderr]     Checking futures-lite v0.1.11
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking futures-intrusive v0.3.1
[INFO] [stderr]     Checking blocking v0.4.7
[INFO] [stderr]     Checking async-executor v1.3.0
[INFO] [stderr]     Checking async-io v1.1.2
[INFO] [stderr]     Checking blocking v1.0.0
[INFO] [stderr]     Checking async-global-executor v1.2.1
[INFO] [stderr]     Checking async-std v1.6.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking smol v0.1.18
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.25s
[INFO] running `Command { std: "docker" "inspect" "15ce23e5c49b1a3f4bb136702eeea97e4b7466b78c5b8c8704077a127fed35af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15ce23e5c49b1a3f4bb136702eeea97e4b7466b78c5b8c8704077a127fed35af", kill_on_drop: false }`
[INFO] [stdout] 15ce23e5c49b1a3f4bb136702eeea97e4b7466b78c5b8c8704077a127fed35af