[INFO] fetching crate wpv 0.0.0-alpha.0...
[INFO] checking wpv-0.0.0-alpha.0 against try#169954edd744527414c631e9af1bbdc537b0cdf2 for pr-75192
[INFO] extracting crate wpv 0.0.0-alpha.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate wpv 0.0.0-alpha.0 on toolchain 169954edd744527414c631e9af1bbdc537b0cdf2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wpv 0.0.0-alpha.0
[INFO] finished tweaking crates.io crate wpv 0.0.0-alpha.0
[INFO] tweaked toml for crates.io crate wpv 0.0.0-alpha.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate wpv 0.0.0-alpha.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "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] b95c27624bfbd20a7e92b39f288a3e5e29dba9ffb94fd57aec469a93a74822cf
[INFO] running `Command { std: "docker" "start" "-a" "b95c27624bfbd20a7e92b39f288a3e5e29dba9ffb94fd57aec469a93a74822cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b95c27624bfbd20a7e92b39f288a3e5e29dba9ffb94fd57aec469a93a74822cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b95c27624bfbd20a7e92b39f288a3e5e29dba9ffb94fd57aec469a93a74822cf", kill_on_drop: false }`
[INFO] [stdout] b95c27624bfbd20a7e92b39f288a3e5e29dba9ffb94fd57aec469a93a74822cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "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] 5fd94d683e4fe562188aa5b9a9550d8849b5c21594023016ff42d21234059a9a
[INFO] running `Command { std: "docker" "start" "-a" "5fd94d683e4fe562188aa5b9a9550d8849b5c21594023016ff42d21234059a9a", kill_on_drop: false }`
[INFO] [stderr]     Checking wpv v0.0.0-alpha.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "5fd94d683e4fe562188aa5b9a9550d8849b5c21594023016ff42d21234059a9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fd94d683e4fe562188aa5b9a9550d8849b5c21594023016ff42d21234059a9a", kill_on_drop: false }`
[INFO] [stdout] 5fd94d683e4fe562188aa5b9a9550d8849b5c21594023016ff42d21234059a9a