[INFO] fetching crate grep-searcher 0.1.7...
[INFO] checking grep-searcher-0.1.7 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate grep-searcher 0.1.7 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate grep-searcher 0.1.7 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate grep-searcher 0.1.7
[INFO] finished tweaking crates.io crate grep-searcher 0.1.7
[INFO] tweaked toml for crates.io crate grep-searcher 0.1.7 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate grep-searcher 0.1.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded encoding_rs_io v0.1.7
[INFO] [stderr]   Downloaded packed_simd v0.3.3
[INFO] [stderr]   Downloaded bytecount v0.6.0
[INFO] [stderr]   Downloaded grep-regex v0.1.5
[INFO] [stderr]   Downloaded grep-matcher v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 8240e4cf2d7d61a6ce0078d7f32f68cfd74c70dadb675505710fec89edc06a02
[INFO] running `Command { std: "docker" "start" "-a" "8240e4cf2d7d61a6ce0078d7f32f68cfd74c70dadb675505710fec89edc06a02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8240e4cf2d7d61a6ce0078d7f32f68cfd74c70dadb675505710fec89edc06a02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8240e4cf2d7d61a6ce0078d7f32f68cfd74c70dadb675505710fec89edc06a02", kill_on_drop: false }`
[INFO] [stdout] 8240e4cf2d7d61a6ce0078d7f32f68cfd74c70dadb675505710fec89edc06a02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 9eef29ad0385edd9110b98e4e44e12681a5eb178628c71f23321c854e195cb70
[INFO] running `Command { std: "docker" "start" "-a" "9eef29ad0385edd9110b98e4e44e12681a5eb178628c71f23321c854e195cb70", kill_on_drop: false }`
[INFO] [stderr]    Compiling encoding_rs v0.8.22
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking bytecount v0.6.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking grep-matcher v0.1.4
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking encoding_rs_io v0.1.7
[INFO] [stderr]     Checking grep-searcher v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.3.5
[INFO] [stderr]     Checking grep-regex v0.1.5
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.24s
[INFO] running `Command { std: "docker" "inspect" "9eef29ad0385edd9110b98e4e44e12681a5eb178628c71f23321c854e195cb70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eef29ad0385edd9110b98e4e44e12681a5eb178628c71f23321c854e195cb70", kill_on_drop: false }`
[INFO] [stdout] 9eef29ad0385edd9110b98e4e44e12681a5eb178628c71f23321c854e195cb70