[INFO] fetching crate ringbahn 0.0.0-experimental.3...
[INFO] checking ringbahn-0.0.0-experimental.3 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate ringbahn 0.0.0-experimental.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ringbahn 0.0.0-experimental.3 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ringbahn 0.0.0-experimental.3
[INFO] finished tweaking crates.io crate ringbahn 0.0.0-experimental.3
[INFO] tweaked toml for crates.io crate ringbahn 0.0.0-experimental.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate ringbahn 0.0.0-experimental.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-io v0.3.5
[INFO] [stderr]   Downloaded futures-executor v0.3.5
[INFO] [stderr]   Downloaded futures-channel v0.3.5
[INFO] [stderr]   Downloaded proc-macro2 v1.0.18
[INFO] [stderr]   Downloaded event-listener v1.2.0
[INFO] [stderr]   Downloaded access-queue v1.1.0
[INFO] [stderr]   Downloaded futures-sink v0.3.5
[INFO] [stderr]   Downloaded syn v1.0.30
[INFO] [stderr]   Downloaded futures-core v0.3.5
[INFO] [stderr]   Downloaded hermit-abi v0.1.13
[INFO] [stderr]   Downloaded cc v1.0.52
[INFO] [stderr]   Downloaded smallvec v1.4.0
[INFO] [stderr]   Downloaded nix v0.16.1
[INFO] [stderr]   Downloaded once_cell v1.3.1
[INFO] [stderr]   Downloaded quote v1.0.5
[INFO] [stderr]   Downloaded futures-task v0.3.5
[INFO] [stderr]   Downloaded proc-macro-nested v0.1.4
[INFO] [stderr]   Downloaded iou v0.0.0-ringbahn.1
[INFO] [stderr]   Downloaded libc v0.2.71
[INFO] [stderr]   Downloaded futures v0.3.5
[INFO] [stderr]   Downloaded remove_dir_all v0.5.2
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.8
[INFO] [stderr]   Downloaded pin-utils v0.1.0
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.15
[INFO] [stderr]   Downloaded uring-sys v0.6.1
[INFO] [stderr]   Downloaded futures-macro v0.3.5
[INFO] [stderr]   Downloaded futures-util v0.3.5
[INFO] [stderr]   Downloaded pin-project-internal v0.4.16
[INFO] [stderr]   Downloaded pin-project v0.4.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", 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] a0d31c7effefa7b8d5e932c3408937d12a75983f69bffe3947307815bcfe5e2a
[INFO] running `Command { std: "docker" "start" "-a" "a0d31c7effefa7b8d5e932c3408937d12a75983f69bffe3947307815bcfe5e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0d31c7effefa7b8d5e932c3408937d12a75983f69bffe3947307815bcfe5e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0d31c7effefa7b8d5e932c3408937d12a75983f69bffe3947307815bcfe5e2a", kill_on_drop: false }`
[INFO] [stdout] a0d31c7effefa7b8d5e932c3408937d12a75983f69bffe3947307815bcfe5e2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41248dd3fd3c6b48f3793875f87bcc1d79ad8a3a3511f1a45bca6b41898b4c91
[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" "41248dd3fd3c6b48f3793875f87bcc1d79ad8a3a3511f1a45bca6b41898b4c91", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking event-listener v1.2.0
[INFO] [stderr]    Compiling uring-sys v0.6.1
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]    Compiling quote v1.0.5
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking access-queue v1.1.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking nix v0.16.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.16
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]     Checking iou v0.0.0-ringbahn.1
[INFO] [stderr]     Checking ringbahn v0.0.0-experimental.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking pin-project v0.4.16
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.02s
[INFO] running `Command { std: "docker" "inspect" "41248dd3fd3c6b48f3793875f87bcc1d79ad8a3a3511f1a45bca6b41898b4c91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41248dd3fd3c6b48f3793875f87bcc1d79ad8a3a3511f1a45bca6b41898b4c91", kill_on_drop: false }`
[INFO] [stdout] 41248dd3fd3c6b48f3793875f87bcc1d79ad8a3a3511f1a45bca6b41898b4c91