[INFO] cloning repository https://github.com/safinsingh/pipe-poll
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/safinsingh/pipe-poll" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsafinsingh%2Fpipe-poll", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsafinsingh%2Fpipe-poll'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8e2d353d95eab6b97cf41f8ff1cf5eea5ea1402
[INFO] checking safinsingh/pipe-poll against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsafinsingh%2Fpipe-poll" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/safinsingh/pipe-poll on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/safinsingh/pipe-poll
[INFO] finished tweaking git repo https://github.com/safinsingh/pipe-poll
[INFO] tweaked toml for git repo https://github.com/safinsingh/pipe-poll written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/safinsingh/pipe-poll already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pin-project-lite v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed99d0a6e88798688995777c0bc068f300d54f54f7accbeebef006b7e40c9c03
[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" "ed99d0a6e88798688995777c0bc068f300d54f54f7accbeebef006b7e40c9c03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed99d0a6e88798688995777c0bc068f300d54f54f7accbeebef006b7e40c9c03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed99d0a6e88798688995777c0bc068f300d54f54f7accbeebef006b7e40c9c03", kill_on_drop: false }`
[INFO] [stdout] ed99d0a6e88798688995777c0bc068f300d54f54f7accbeebef006b7e40c9c03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a80b315a6baca39f5e579e1c778462a0eb1348ba1a8163f4610049788b296578
[INFO] running `Command { std: "docker" "start" "-a" "a80b315a6baca39f5e579e1c778462a0eb1348ba1a8163f4610049788b296578", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.5
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking async-lock v2.3.0
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking async-executor v1.4.0
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking nb-connect v1.0.3
[INFO] [stderr]    Compiling ctor v0.1.19
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]     Checking value-bag v1.0.0-alpha.6
[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking async-io v1.3.1
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking async-std v1.9.0
[INFO] [stderr]     Checking pipe-poll v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.44s
[INFO] running `Command { std: "docker" "inspect" "a80b315a6baca39f5e579e1c778462a0eb1348ba1a8163f4610049788b296578", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a80b315a6baca39f5e579e1c778462a0eb1348ba1a8163f4610049788b296578", kill_on_drop: false }`
[INFO] [stdout] a80b315a6baca39f5e579e1c778462a0eb1348ba1a8163f4610049788b296578