[INFO] fetching crate serp-example-ocw 0.1.0...
[INFO] checking serp-example-ocw-0.1.0 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate serp-example-ocw 0.1.0 into /workspace/builds/worker-38/source
[INFO] validating manifest of crates.io crate serp-example-ocw 0.1.0 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serp-example-ocw 0.1.0
[INFO] finished tweaking crates.io crate serp-example-ocw 0.1.0
[INFO] tweaked toml for crates.io crate serp-example-ocw 0.1.0 written to /workspace/builds/worker-38/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sp-application-crypto v2.0.1
[INFO] [stderr]   Downloaded lite-json v0.1.3
[INFO] [stderr]   Downloaded sp-io v2.0.1
[INFO] [stderr]   Downloaded lite-parser v0.1.2
[INFO] [stderr]   Downloaded frame-system v2.0.1
[INFO] [stderr]   Downloaded frame-support v2.0.1
[INFO] [stderr]   Downloaded bitmask v0.5.0
[INFO] [stderr]   Downloaded parity-scale-codec-derive v1.2.3
[INFO] [stderr]   Downloaded parity-scale-codec v1.3.7
[INFO] [stderr]   Downloaded sp-inherents v2.0.1
[INFO] [stderr]   Downloaded sp-version v2.0.1
[INFO] [stderr]   Downloaded sp-runtime-interface-proc-macro v2.0.1
[INFO] [stderr]   Downloaded byte-slice-cast v0.3.5
[INFO] [stderr]   Downloaded sp-wasm-interface v2.0.1
[INFO] [stderr]   Downloaded sp-arithmetic v2.0.1
[INFO] [stderr]   Downloaded sp-panic-handler v2.0.1
[INFO] [stderr]   Downloaded sp-externalities v0.8.1
[INFO] [stderr]   Downloaded memory-db v0.24.1
[INFO] [stderr]   Downloaded impl-codec v0.4.2
[INFO] [stderr]   Downloaded uint v0.8.5
[INFO] [stderr]   Downloaded sp-core v2.0.1
[INFO] [stderr]   Downloaded sp-state-machine v0.8.1
[INFO] [stderr]   Downloaded parity-util-mem v0.7.0
[INFO] [stderr]   Downloaded secrecy v0.6.0
[INFO] [stderr]   Downloaded fixed-hash v0.6.1
[INFO] [stderr]   Downloaded primitive-types v0.7.3
[INFO] [stderr]   Downloaded sp-tracing v2.0.1
[INFO] [stderr]   Downloaded sp-runtime-interface v2.0.1
[INFO] [stderr]   Downloaded sp-storage v2.0.1
[INFO] [stderr]   Downloaded tiny-bip39 v0.7.3
[INFO] [stderr]   Downloaded radium v0.3.0
[INFO] [stderr]   Downloaded bitvec v0.17.4
[INFO] [stderr]   Downloaded sp-runtime v2.0.1
[INFO] [stderr]   Downloaded sp-std v2.0.1
[INFO] [stderr]   Downloaded frame-metadata v12.0.1
[INFO] [stderr]   Downloaded frame-support-procedural-tools-derive v2.0.1
[INFO] [stderr]   Downloaded frame-support-procedural-tools v2.0.1
[INFO] [stderr]   Downloaded frame-support-procedural v2.0.1
[INFO] [stderr]   Downloaded sp-trie v2.0.1
[INFO] [stderr]   Downloaded sp-debug-derive v2.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 151ee3c10240e6ec8627db489619599dbd8db408dc514b4ade543fa4d5260fdb
[INFO] running `Command { std: "docker" "start" "-a" "151ee3c10240e6ec8627db489619599dbd8db408dc514b4ade543fa4d5260fdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "151ee3c10240e6ec8627db489619599dbd8db408dc514b4ade543fa4d5260fdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "151ee3c10240e6ec8627db489619599dbd8db408dc514b4ade543fa4d5260fdb", kill_on_drop: false }`
[INFO] [stdout] 151ee3c10240e6ec8627db489619599dbd8db408dc514b4ade543fa4d5260fdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 331964261b59462e45dce900e946b719e07771a762c54b1baa680da3f440fd5c
[INFO] running `Command { std: "docker" "start" "-a" "331964261b59462e45dce900e946b719e07771a762c54b1baa680da3f440fd5c", kill_on_drop: false }`
[INFO] [stderr] error: failed to create jobserver
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to increase jobserver pipe capacity from 4096 to 8192; jobserver otherwise might deadlock
[INFO] running `Command { std: "docker" "inspect" "331964261b59462e45dce900e946b719e07771a762c54b1baa680da3f440fd5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "331964261b59462e45dce900e946b719e07771a762c54b1baa680da3f440fd5c", kill_on_drop: false }`
[INFO] [stdout] 331964261b59462e45dce900e946b719e07771a762c54b1baa680da3f440fd5c