[INFO] fetching crate walrus-macro 0.18.0...
[INFO] checking walrus-macro-0.18.0 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate walrus-macro 0.18.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate walrus-macro 0.18.0 on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate walrus-macro 0.18.0
[INFO] finished tweaking crates.io crate walrus-macro 0.18.0
[INFO] tweaked toml for crates.io crate walrus-macro 0.18.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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] 2b917439edf02e97a9b5b4182527b3b1953c099bd858e38ebac12c0dc2c96088
[INFO] running `Command { std: "docker" "start" "-a" "2b917439edf02e97a9b5b4182527b3b1953c099bd858e38ebac12c0dc2c96088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b917439edf02e97a9b5b4182527b3b1953c099bd858e38ebac12c0dc2c96088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b917439edf02e97a9b5b4182527b3b1953c099bd858e38ebac12c0dc2c96088", kill_on_drop: false }`
[INFO] [stdout] 2b917439edf02e97a9b5b4182527b3b1953c099bd858e38ebac12c0dc2c96088
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb0f5377d97a285e45359c19d96123c23fdb8543bdedbc3a0f36f7f94cba5dc6
[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" "fb0f5377d97a285e45359c19d96123c23fdb8543bdedbc3a0f36f7f94cba5dc6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking heck v0.3.1
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking walrus-macro v0.18.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.27s
[INFO] running `Command { std: "docker" "inspect" "fb0f5377d97a285e45359c19d96123c23fdb8543bdedbc3a0f36f7f94cba5dc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb0f5377d97a285e45359c19d96123c23fdb8543bdedbc3a0f36f7f94cba5dc6", kill_on_drop: false }`
[INFO] [stdout] fb0f5377d97a285e45359c19d96123c23fdb8543bdedbc3a0f36f7f94cba5dc6