[INFO] fetching crate grep 0.2.7...
[INFO] checking grep-0.2.7 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate grep 0.2.7 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate grep 0.2.7 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate grep 0.2.7
[INFO] finished tweaking crates.io crate grep 0.2.7
[INFO] tweaked toml for crates.io crate grep 0.2.7 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate grep 0.2.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded grep-printer v0.1.5
[INFO] [stderr]   Downloaded pcre2-sys v0.2.2
[INFO] [stderr]   Downloaded grep-pcre2 v0.1.4
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f8f8fdfc48bcfa04f37c6720ea528e4312d053c1ab3f583a6c3b53d38efe60f
[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" "9f8f8fdfc48bcfa04f37c6720ea528e4312d053c1ab3f583a6c3b53d38efe60f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f8f8fdfc48bcfa04f37c6720ea528e4312d053c1ab3f583a6c3b53d38efe60f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f8f8fdfc48bcfa04f37c6720ea528e4312d053c1ab3f583a6c3b53d38efe60f", kill_on_drop: false }`
[INFO] [stdout] 9f8f8fdfc48bcfa04f37c6720ea528e4312d053c1ab3f583a6c3b53d38efe60f
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9257a8d8d987d0ac8eed618b25af2a291cec3a24dfe7034a33169b97be3cc16
[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" "f9257a8d8d987d0ac8eed618b25af2a291cec3a24dfe7034a33169b97be3cc16", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling syn v1.0.27
[INFO] [stderr]     Checking bytecount v0.6.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking base64 v0.12.1
[INFO] [stderr]     Checking encoding_rs v0.8.23
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking grep-matcher v0.1.4
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking encoding_rs_io v0.1.7
[INFO] [stderr]     Checking grep-searcher v0.1.7
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking grep-regex v0.1.8
[INFO] [stderr]     Checking grep-cli v0.1.5
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]     Checking grep-printer v0.1.5
[INFO] [stderr]     Checking grep v0.2.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.97s
[INFO] running `Command { std: "docker" "inspect" "f9257a8d8d987d0ac8eed618b25af2a291cec3a24dfe7034a33169b97be3cc16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9257a8d8d987d0ac8eed618b25af2a291cec3a24dfe7034a33169b97be3cc16", kill_on_drop: false }`
[INFO] [stdout] f9257a8d8d987d0ac8eed618b25af2a291cec3a24dfe7034a33169b97be3cc16