[INFO] fetching crate concurrency-demo-benchmarks 0.0.7...
[INFO] checking concurrency-demo-benchmarks-0.0.7 against beta for pr-78714
[INFO] extracting crate concurrency-demo-benchmarks 0.0.7 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate concurrency-demo-benchmarks 0.0.7 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concurrency-demo-benchmarks 0.0.7
[INFO] finished tweaking crates.io crate concurrency-demo-benchmarks 0.0.7
[INFO] tweaked toml for crates.io crate concurrency-demo-benchmarks 0.0.7 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate concurrency-demo-benchmarks 0.0.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35257074c8da34ab1107837349948346f65b08a9df27a73ec35adb733d598d4a
[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" "35257074c8da34ab1107837349948346f65b08a9df27a73ec35adb733d598d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35257074c8da34ab1107837349948346f65b08a9df27a73ec35adb733d598d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35257074c8da34ab1107837349948346f65b08a9df27a73ec35adb733d598d4a", kill_on_drop: false }`
[INFO] [stdout] 35257074c8da34ab1107837349948346f65b08a9df27a73ec35adb733d598d4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c58ddbc8cc915002e4cd881b5b4a71eb91e96f19ae3c877cb3857a01c68f5ee
[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" "0c58ddbc8cc915002e4cd881b5b4a71eb91e96f19ae3c877cb3857a01c68f5ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking os_str_bytes v2.3.2
[INFO] [stderr]     Checking regex-syntax v0.6.20
[INFO] [stderr]     Checking oorandom v11.1.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]     Checking futures-task v0.3.7
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.3.0
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.7
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking crossbeam v0.8.0
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking num-iter v0.1.41
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking futures-util v0.3.7
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]     Checking image v0.21.3
[INFO] [stderr]     Checking leaky-bucket v0.8.2
[INFO] [stderr]     Checking matplotrust v0.1.7
[INFO] [stderr]     Checking concurrency-demo-benchmarks v0.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.45s
[INFO] running `Command { std: "docker" "inspect" "0c58ddbc8cc915002e4cd881b5b4a71eb91e96f19ae3c877cb3857a01c68f5ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c58ddbc8cc915002e4cd881b5b4a71eb91e96f19ae3c877cb3857a01c68f5ee", kill_on_drop: false }`
[INFO] [stdout] 0c58ddbc8cc915002e4cd881b5b4a71eb91e96f19ae3c877cb3857a01c68f5ee