[INFO] cloning repository https://github.com/Francososa/grep-baby
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Francososa/grep-baby" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrancososa%2Fgrep-baby", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrancososa%2Fgrep-baby'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45799ec2c0f05909a13056f4a223f4e5ce03ec25
[INFO] testing Francososa/grep-baby against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrancososa%2Fgrep-baby" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Francososa/grep-baby on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Francososa/grep-baby
[INFO] finished tweaking git repo https://github.com/Francososa/grep-baby
[INFO] tweaked toml for git repo https://github.com/Francososa/grep-baby written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Francososa/grep-baby already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2acc680f365b1792b16aaab4b3009bffef285fab59c1299ebc3ec7e2a0c1f447
[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" "2acc680f365b1792b16aaab4b3009bffef285fab59c1299ebc3ec7e2a0c1f447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2acc680f365b1792b16aaab4b3009bffef285fab59c1299ebc3ec7e2a0c1f447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2acc680f365b1792b16aaab4b3009bffef285fab59c1299ebc3ec7e2a0c1f447", kill_on_drop: false }`
[INFO] [stdout] 2acc680f365b1792b16aaab4b3009bffef285fab59c1299ebc3ec7e2a0c1f447
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1605bdd22226d0bcd842ff1068c03d5b10c0306a6a7fb76137acfad7af78489
[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" "b1605bdd22226d0bcd842ff1068c03d5b10c0306a6a7fb76137acfad7af78489", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling grep-baby v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `io`
[INFO] [stdout]   --> src/main.rs:44:21
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let stdin = io::stdin();
[INFO] [stdout]    |                     ^^ use of undeclared crate or module `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `grep-baby` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b1605bdd22226d0bcd842ff1068c03d5b10c0306a6a7fb76137acfad7af78489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1605bdd22226d0bcd842ff1068c03d5b10c0306a6a7fb76137acfad7af78489", kill_on_drop: false }`
[INFO] [stdout] b1605bdd22226d0bcd842ff1068c03d5b10c0306a6a7fb76137acfad7af78489