[INFO] fetching crate futures-core 0.3.16...
[INFO] building futures-core-0.3.16 against try#d5c88c22807925c189328ef9d923c5d2b11a95b8+rustflags=-Zprofile-closures for pr-87066-3
[INFO] extracting crate futures-core 0.3.16 into /workspace/builds/worker-66/source
[INFO] validating manifest of crates.io crate futures-core 0.3.16 on toolchain d5c88c22807925c189328ef9d923c5d2b11a95b8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-core 0.3.16
[INFO] finished tweaking crates.io crate futures-core 0.3.16
[INFO] tweaked toml for crates.io crate futures-core 0.3.16 written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "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-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8c1a5642d72b1cf06edaca21e3163e8c9b3c338568ac0ba344ee50589c645aa
[INFO] running `Command { std: "docker" "start" "-a" "e8c1a5642d72b1cf06edaca21e3163e8c9b3c338568ac0ba344ee50589c645aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8c1a5642d72b1cf06edaca21e3163e8c9b3c338568ac0ba344ee50589c645aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8c1a5642d72b1cf06edaca21e3163e8c9b3c338568ac0ba344ee50589c645aa", kill_on_drop: false }`
[INFO] [stdout] e8c1a5642d72b1cf06edaca21e3163e8c9b3c338568ac0ba344ee50589c645aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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 -Zprofile-closures" "-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" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1407aeff5046fe28f413778ffe56c54e34aa9b5bcfd3f34ec6748ea220f5f6d
[INFO] running `Command { std: "docker" "start" "-a" "a1407aeff5046fe28f413778ffe56c54e34aa9b5bcfd3f34ec6748ea220f5f6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.16 (/opt/rustwide/workdir)
[INFO] [stderr] SG_CR_Eslkdjf: futures_core, (f94e5030ded3d6f9, d48906246e7d81e1), 0, 0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "a1407aeff5046fe28f413778ffe56c54e34aa9b5bcfd3f34ec6748ea220f5f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1407aeff5046fe28f413778ffe56c54e34aa9b5bcfd3f34ec6748ea220f5f6d", kill_on_drop: false }`
[INFO] [stdout] a1407aeff5046fe28f413778ffe56c54e34aa9b5bcfd3f34ec6748ea220f5f6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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 -Zprofile-closures" "-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" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e453593445c9e44710b32aef3974ef726717559ffb5ae04ee986920143e03f2
[INFO] running `Command { std: "docker" "start" "-a" "0e453593445c9e44710b32aef3974ef726717559ffb5ae04ee986920143e03f2", 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" "0e453593445c9e44710b32aef3974ef726717559ffb5ae04ee986920143e03f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e453593445c9e44710b32aef3974ef726717559ffb5ae04ee986920143e03f2", kill_on_drop: false }`
[INFO] [stdout] 0e453593445c9e44710b32aef3974ef726717559ffb5ae04ee986920143e03f2