[INFO] fetching crate flowsamples 0.34.10...
[INFO] testing flowsamples-0.34.10 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate flowsamples 0.34.10 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate flowsamples 0.34.10 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flowsamples 0.34.10
[INFO] finished tweaking crates.io crate flowsamples 0.34.10
[INFO] tweaked toml for crates.io crate flowsamples 0.34.10 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate flowsamples 0.34.10 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5bf10c47a180ef33b5cfbf008c1e10268a2d39ed6bba39b73520ca40ded61bd
[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" "d5bf10c47a180ef33b5cfbf008c1e10268a2d39ed6bba39b73520ca40ded61bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5bf10c47a180ef33b5cfbf008c1e10268a2d39ed6bba39b73520ca40ded61bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5bf10c47a180ef33b5cfbf008c1e10268a2d39ed6bba39b73520ca40ded61bd", kill_on_drop: false }`
[INFO] [stdout] d5bf10c47a180ef33b5cfbf008c1e10268a2d39ed6bba39b73520ca40ded61bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 728a3f0582f22904c6000002ba3bc331c7d8fed4931977769b0563b5c3bf8081
[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" "728a3f0582f22904c6000002ba3bc331c7d8fed4931977769b0563b5c3bf8081", kill_on_drop: false }`
[INFO] [stderr]    Compiling curl v0.4.36
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling openssl-sys v0.9.61
[INFO] [stderr]    Compiling curl-sys v0.4.42+curl-7.76.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.17
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling url v2.2.1
[INFO] [stderr]    Compiling simpath v2.2.1
[INFO] [stderr]    Compiling flowsamples v0.34.10 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `flowsamples v0.34.10 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/flowsamples-1c252da967a5d10b/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-env-changed=FLOW_LIB_PATH
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir
[INFO] [stderr]   `flowsample` version 0.34.10
[INFO] [stderr]   Current Working Directory: `/opt/rustwide/workdir`
[INFO] [stderr]   Samples Root Directory: `/opt/rustwide/workdir`
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Custom { kind: Other, error: "`flowc` could not be found in `$PATH` or `target/`" }
[INFO] running `Command { std: "docker" "inspect" "728a3f0582f22904c6000002ba3bc331c7d8fed4931977769b0563b5c3bf8081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "728a3f0582f22904c6000002ba3bc331c7d8fed4931977769b0563b5c3bf8081", kill_on_drop: false }`
[INFO] [stdout] 728a3f0582f22904c6000002ba3bc331c7d8fed4931977769b0563b5c3bf8081