[INFO] cloning repository https://github.com/ssebide/mr_cat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ssebide/mr_cat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fssebide%2Fmr_cat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fssebide%2Fmr_cat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f5f598d324eb4ddc4df9bebea079dc7478f13b5
[INFO] testing ssebide/mr_cat against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fssebide%2Fmr_cat" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ssebide/mr_cat
[INFO] finished tweaking git repo https://github.com/ssebide/mr_cat
[INFO] tweaked toml for git repo https://github.com/ssebide/mr_cat written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ssebide/mr_cat on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ssebide/mr_cat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt v0.2.18
[INFO] [stderr]   Downloaded predicates-core v1.0.9
[INFO] [stderr]   Downloaded structopt-derive v0.2.18
[INFO] [stderr]   Downloaded predicates v1.0.8
[INFO] [stderr]   Downloaded normalize-line-endings v0.3.0
[INFO] [stderr]   Downloaded termtree v0.5.1
[INFO] [stderr]   Downloaded exitfailure v0.5.1
[INFO] [stderr]   Downloaded failure v0.1.8
[INFO] [stderr]   Downloaded failure_derive v0.1.8
[INFO] [stderr]   Downloaded is-terminal v0.4.16
[INFO] [stderr]   Downloaded predicates-tree v1.0.12
[INFO] [stderr]   Downloaded difflib v0.4.0
[INFO] [stderr]   Downloaded doc-comment v0.3.3
[INFO] [stderr]   Downloaded assert_cmd v2.0.17
[INFO] [stderr]   Downloaded float-cmp v0.8.0
[INFO] [stderr]   Downloaded predicates v3.1.3
[INFO] [stderr]   Downloaded synstructure v0.12.6
[INFO] [stderr]   Downloaded colored v1.9.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a0116b85582dce799d1ecfba3d030210703c3aae6ed0df53c1c772795b73349
[INFO] running `Command { std: "docker" "start" "-a" "4a0116b85582dce799d1ecfba3d030210703c3aae6ed0df53c1c772795b73349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a0116b85582dce799d1ecfba3d030210703c3aae6ed0df53c1c772795b73349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a0116b85582dce799d1ecfba3d030210703c3aae6ed0df53c1c772795b73349", kill_on_drop: false }`
[INFO] [stdout] 4a0116b85582dce799d1ecfba3d030210703c3aae6ed0df53c1c772795b73349
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 950a92597837d41449f41dde3c3531d96921617ecb542e2437dd1afd8b3970c9
[INFO] running `Command { std: "docker" "start" "-a" "950a92597837d41449f41dde3c3531d96921617ecb542e2437dd1afd8b3970c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling gimli v0.31.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling predicates-core v1.0.9
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.25
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling termtree v0.5.1
[INFO] [stderr]    Compiling assert_cmd v2.0.17
[INFO] [stderr]    Compiling predicates-tree v1.0.12
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling is-terminal v0.4.16
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling wait-timeout v0.2.1
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling predicates v3.1.3
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling colored v1.9.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling addr2line v0.24.2
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling backtrace v0.3.75
[INFO] [stderr]    Compiling bstr v1.12.0
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling exitfailure v0.5.1
[INFO] [stderr]    Compiling predicates v1.0.8
[INFO] [stderr]    Compiling mr_cat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.69s
[INFO] running `Command { std: "docker" "inspect" "950a92597837d41449f41dde3c3531d96921617ecb542e2437dd1afd8b3970c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "950a92597837d41449f41dde3c3531d96921617ecb542e2437dd1afd8b3970c9", kill_on_drop: false }`
[INFO] [stdout] 950a92597837d41449f41dde3c3531d96921617ecb542e2437dd1afd8b3970c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1e3ea5ceaba4c0dfcb9de85c4efcd048269a9a5800bc8c149a56d4ddeea1d47
[INFO] running `Command { std: "docker" "start" "-a" "f1e3ea5ceaba4c0dfcb9de85c4efcd048269a9a5800bc8c149a56d4ddeea1d47", kill_on_drop: false }`
[INFO] [stderr]    Compiling mr_cat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io::stdout`
[INFO] [stdout]  --> tests/integration_tests.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{io::stdout, process::Command};
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "f1e3ea5ceaba4c0dfcb9de85c4efcd048269a9a5800bc8c149a56d4ddeea1d47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1e3ea5ceaba4c0dfcb9de85c4efcd048269a9a5800bc8c149a56d4ddeea1d47", kill_on_drop: false }`
[INFO] [stdout] f1e3ea5ceaba4c0dfcb9de85c4efcd048269a9a5800bc8c149a56d4ddeea1d47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 476429e2027f8da05261fc90799fb2b897fb08433522dd08a566cae1e45235e7
[INFO] running `Command { std: "docker" "start" "-a" "476429e2027f8da05261fc90799fb2b897fb08433522dd08a566cae1e45235e7", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `io::stdout`
[INFO] [stderr]  --> tests/integration_tests.rs:3:11
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::{io::stdout, process::Command};
[INFO] [stderr]   |           ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mr_cat` (test "integration_tests") generated 1 warning (run `cargo fix --test "integration_tests" -p mr_cat` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mr_cat-94915dc3dbcbe7b5)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/integration_tests.rs (/opt/rustwide/target/debug/deps/integration_tests-70b5c64d577d75e8)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test run_with_defaults ... ok
[INFO] [stdout] test fail_on_non_existing_file ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.31s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "476429e2027f8da05261fc90799fb2b897fb08433522dd08a566cae1e45235e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "476429e2027f8da05261fc90799fb2b897fb08433522dd08a566cae1e45235e7", kill_on_drop: false }`
[INFO] [stdout] 476429e2027f8da05261fc90799fb2b897fb08433522dd08a566cae1e45235e7