[INFO] fetching crate cowvec 0.1.2...
[INFO] checking cowvec-0.1.2 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate cowvec 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cowvec 0.1.2 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cowvec 0.1.2
[INFO] finished tweaking crates.io crate cowvec 0.1.2
[INFO] tweaked toml for crates.io crate cowvec 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b0dc974d98bc2a42564c3fb6b85d8e6e8e4eb313cbff3697c5febd8b5cd9703c
[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" "b0dc974d98bc2a42564c3fb6b85d8e6e8e4eb313cbff3697c5febd8b5cd9703c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0dc974d98bc2a42564c3fb6b85d8e6e8e4eb313cbff3697c5febd8b5cd9703c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0dc974d98bc2a42564c3fb6b85d8e6e8e4eb313cbff3697c5febd8b5cd9703c", kill_on_drop: false }`
[INFO] [stdout] b0dc974d98bc2a42564c3fb6b85d8e6e8e4eb313cbff3697c5febd8b5cd9703c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 185f32452ef8243bddb65f62be5a2c56ad7ea0b921040db4eea92e13106ac420
[INFO] running `Command { std: "docker" "start" "-a" "185f32452ef8243bddb65f62be5a2c56ad7ea0b921040db4eea92e13106ac420", kill_on_drop: false }`
[INFO] [stderr]     Checking cowvec v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "185f32452ef8243bddb65f62be5a2c56ad7ea0b921040db4eea92e13106ac420", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "185f32452ef8243bddb65f62be5a2c56ad7ea0b921040db4eea92e13106ac420", kill_on_drop: false }`
[INFO] [stdout] 185f32452ef8243bddb65f62be5a2c56ad7ea0b921040db4eea92e13106ac420