[INFO] fetching crate flowr 0.36.0...
[INFO] testing flowr-0.36.0 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate flowr 0.36.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate flowr 0.36.0 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flowr 0.36.0
[INFO] finished tweaking crates.io crate flowr 0.36.0
[INFO] tweaked toml for crates.io crate flowr 0.36.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate flowr 0.36.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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] 68208fe7a9d0d8abe10af578aed19250db758dd78d030b588e9eb842cab5869b
[INFO] running `Command { std: "docker" "start" "-a" "68208fe7a9d0d8abe10af578aed19250db758dd78d030b588e9eb842cab5869b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68208fe7a9d0d8abe10af578aed19250db758dd78d030b588e9eb842cab5869b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68208fe7a9d0d8abe10af578aed19250db758dd78d030b588e9eb842cab5869b", kill_on_drop: false }`
[INFO] [stdout] 68208fe7a9d0d8abe10af578aed19250db758dd78d030b588e9eb842cab5869b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--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] 28099c8e9ab382696de88760e05bcf4481c9f81b514586a82b1bb6fb147fed39
[INFO] running `Command { std: "docker" "start" "-a" "28099c8e9ab382696de88760e05bcf4481c9f81b514586a82b1bb6fb147fed39", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling zmq v0.9.2
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling utf8parse v0.2.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling object v0.25.3
[INFO] [stderr]    Compiling simplog v1.2.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling multimap v0.8.3
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]    Compiling zmq-sys v0.11.0
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling fd-lock v2.0.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling wasmi v0.6.2
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling curl-sys v0.4.44+curl-7.77.0
[INFO] [stderr]    Compiling curl v0.4.38
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling simpath v2.3.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling flowcore v0.36.0
[INFO] [stderr]    Compiling flowstdlib v0.36.0
[INFO] [stderr] error: failed to run custom build command for `flowstdlib v0.36.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/flowstdlib-8cc009f719484890/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Custom { kind: Other, error: "`flowc` could not be found in `$PATH` or `target/`" }
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "28099c8e9ab382696de88760e05bcf4481c9f81b514586a82b1bb6fb147fed39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28099c8e9ab382696de88760e05bcf4481c9f81b514586a82b1bb6fb147fed39", kill_on_drop: false }`
[INFO] [stdout] 28099c8e9ab382696de88760e05bcf4481c9f81b514586a82b1bb6fb147fed39