[INFO] cloning repository https://github.com/mrageh/simplegrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrageh/simplegrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrageh%2Fsimplegrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrageh%2Fsimplegrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 223bf40a3507785b90529180d0846367a08cba77
[INFO] checking mrageh/simplegrep against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrageh%2Fsimplegrep" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrageh/simplegrep 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 git repo https://github.com/mrageh/simplegrep
[INFO] finished tweaking git repo https://github.com/mrageh/simplegrep
[INFO] tweaked toml for git repo https://github.com/mrageh/simplegrep written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/mrageh/simplegrep 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]  Downloading crates ...
[INFO] [stderr]   Downloaded bytecount v0.5.1
[INFO] [stderr]   Downloaded grep-regex v0.1.3
[INFO] [stderr]   Downloaded globset v0.4.3
[INFO] [stderr]   Downloaded encoding_rs_io v0.1.6
[INFO] [stderr]   Downloaded grep-matcher v0.1.2
[INFO] [stderr]   Downloaded grep-printer v0.1.2
[INFO] [stderr]   Downloaded regex-automata v0.1.7
[INFO] [stderr]   Downloaded grep-searcher v0.1.4
[INFO] [stderr]   Downloaded grep-cli v0.1.2
[INFO] [stderr]   Downloaded bstr v0.1.4
[INFO] [stderr]   Downloaded grep v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 016857530f5f4e6f6629c6f1f557b14de5159037eb87df5ae2d184a1476efcd8
[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" "016857530f5f4e6f6629c6f1f557b14de5159037eb87df5ae2d184a1476efcd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "016857530f5f4e6f6629c6f1f557b14de5159037eb87df5ae2d184a1476efcd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "016857530f5f4e6f6629c6f1f557b14de5159037eb87df5ae2d184a1476efcd8", kill_on_drop: false }`
[INFO] [stdout] 016857530f5f4e6f6629c6f1f557b14de5159037eb87df5ae2d184a1476efcd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] baf98fc5d6ade28d8141dcff10bcc16133a40452317783b5786c91ff404bdcd9
[INFO] running `Command { std: "docker" "start" "-a" "baf98fc5d6ade28d8141dcff10bcc16133a40452317783b5786c91ff404bdcd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex v1.1.7
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking bytecount v0.5.1
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking walkdir v2.2.8
[INFO] [stderr]     Checking encoding_rs v0.8.17
[INFO] [stderr]     Checking regex-automata v0.1.7
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]     Checking grep-matcher v0.1.2
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking regex-syntax v0.6.7
[INFO] [stderr]    Compiling syn v0.15.36
[INFO] [stderr]     Checking bstr v0.1.4
[INFO] [stderr]     Checking encoding_rs_io v0.1.6
[INFO] [stderr]     Checking grep-searcher v0.1.4
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]     Checking globset v0.4.3
[INFO] [stderr]     Checking grep-regex v0.1.3
[INFO] [stderr]     Checking grep-cli v0.1.2
[INFO] [stderr]     Checking grep-printer v0.1.2
[INFO] [stderr]     Checking grep v0.2.4
[INFO] [stderr]     Checking simplegrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn try_main() -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:43:64
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn search(pattern: &str, paths: &[OsString]) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn try_main() -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:43:64
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn search(pattern: &str, paths: &[OsString]) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.89s
[INFO] running `Command { std: "docker" "inspect" "baf98fc5d6ade28d8141dcff10bcc16133a40452317783b5786c91ff404bdcd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baf98fc5d6ade28d8141dcff10bcc16133a40452317783b5786c91ff404bdcd9", kill_on_drop: false }`
[INFO] [stdout] baf98fc5d6ade28d8141dcff10bcc16133a40452317783b5786c91ff404bdcd9