[INFO] fetching crate executor 0.8.0...
[INFO] checking executor-0.8.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate executor 0.8.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate executor 0.8.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate executor 0.8.0
[INFO] finished tweaking crates.io crate executor 0.8.0
[INFO] tweaked toml for crates.io crate executor 0.8.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate executor 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e0e0f6c8c67f8b966beef888aec2e5a8c7a18cebb663ebaf718f2e942273fcb
[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" "6e0e0f6c8c67f8b966beef888aec2e5a8c7a18cebb663ebaf718f2e942273fcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e0e0f6c8c67f8b966beef888aec2e5a8c7a18cebb663ebaf718f2e942273fcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e0e0f6c8c67f8b966beef888aec2e5a8c7a18cebb663ebaf718f2e942273fcb", kill_on_drop: false }`
[INFO] [stdout] 6e0e0f6c8c67f8b966beef888aec2e5a8c7a18cebb663ebaf718f2e942273fcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--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] 52cc0069225dce1aeca79fdebf7cd4527698ebae789a920d801735ff4a8fdc0b
[INFO] running `Command { std: "docker" "start" "-a" "52cc0069225dce1aeca79fdebf7cd4527698ebae789a920d801735ff4a8fdc0b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking futures-core v0.3.13
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking futures-io v0.3.13
[INFO] [stderr]     Checking fastrand v1.4.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking vec-arena v1.1.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking woke v0.0.2
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking async-lock v2.3.0
[INFO] [stderr]     Checking executor v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking nb-connect v1.1.0
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]     Checking value-bag v1.0.0-alpha.6
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking polling v2.0.3
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking async-io v1.3.1
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking async-std v1.9.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.18s
[INFO] running `Command { std: "docker" "inspect" "52cc0069225dce1aeca79fdebf7cd4527698ebae789a920d801735ff4a8fdc0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52cc0069225dce1aeca79fdebf7cd4527698ebae789a920d801735ff4a8fdc0b", kill_on_drop: false }`
[INFO] [stdout] 52cc0069225dce1aeca79fdebf7cd4527698ebae789a920d801735ff4a8fdc0b