[INFO] updating cached repository https://github.com/slayzz/rust-grep
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 756d084a32235ef05067a06708484eae551f050a
[INFO] testing slayzz/rust-grep against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslayzz%2Frust-grep" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/slayzz/rust-grep on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/slayzz/rust-grep
[INFO] finished tweaking git repo https://github.com/slayzz/rust-grep
[INFO] tweaked toml for git repo https://github.com/slayzz/rust-grep written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/slayzz/rust-grep already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7cfe34062575342331940f6382118e69f0a407ef49d9e3c7702fc1739894a5fb
[INFO] running `"docker" "start" "-a" "7cfe34062575342331940f6382118e69f0a407ef49d9e3c7702fc1739894a5fb"`
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.6.5
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling command_line v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `invalid_error`
[INFO] [stderr]   --> src/utils/mod.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn invalid_error(value: &str) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_error`
[INFO] [stderr]   --> src/utils/mod.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn print_error(text: &str) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/utils/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     stderr().write(format!("{}\n", HELP_TEXT).as_bytes());
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/utils/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     stderr().write(text.as_bytes());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.44s
[INFO] running `"docker" "inspect" "7cfe34062575342331940f6382118e69f0a407ef49d9e3c7702fc1739894a5fb"`
[INFO] running `"docker" "rm" "-f" "7cfe34062575342331940f6382118e69f0a407ef49d9e3c7702fc1739894a5fb"`
[INFO] [stdout] 7cfe34062575342331940f6382118e69f0a407ef49d9e3c7702fc1739894a5fb
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8dc8068e61c32de143c20c41d00d3c71c6e62428ae1e0543ee15c1a5f205174f
[INFO] running `"docker" "start" "-a" "8dc8068e61c32de143c20c41d00d3c71c6e62428ae1e0543ee15c1a5f205174f"`
[INFO] [stderr]    Compiling command_line v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `invalid_error`
[INFO] [stderr]   --> src/utils/mod.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn invalid_error(value: &str) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_error`
[INFO] [stderr]   --> src/utils/mod.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn print_error(text: &str) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/utils/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     stderr().write(format!("{}\n", HELP_TEXT).as_bytes());
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/utils/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     stderr().write(text.as_bytes());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "8dc8068e61c32de143c20c41d00d3c71c6e62428ae1e0543ee15c1a5f205174f"`
[INFO] running `"docker" "rm" "-f" "8dc8068e61c32de143c20c41d00d3c71c6e62428ae1e0543ee15c1a5f205174f"`
[INFO] [stdout] 8dc8068e61c32de143c20c41d00d3c71c6e62428ae1e0543ee15c1a5f205174f
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2ae716ba6fbf4d078e9d2709d7a21e8464cfbdfd50fff396383e41148ebc02b4
[INFO] running `"docker" "start" "-a" "2ae716ba6fbf4d078e9d2709d7a21e8464cfbdfd50fff396383e41148ebc02b4"`
[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
[INFO] [stdout] 
[INFO] [stderr] warning: function is never used: `invalid_error`
[INFO] [stderr]   --> src/utils/mod.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn invalid_error(value: &str) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_error`
[INFO] [stderr]   --> src/utils/mod.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn print_error(text: &str) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/utils/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     stderr().write(format!("{}\n", HELP_TEXT).as_bytes());
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/utils/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     stderr().write(text.as_bytes());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/command_line-a0c901eed6450f51
[INFO] running `"docker" "inspect" "2ae716ba6fbf4d078e9d2709d7a21e8464cfbdfd50fff396383e41148ebc02b4"`
[INFO] running `"docker" "rm" "-f" "2ae716ba6fbf4d078e9d2709d7a21e8464cfbdfd50fff396383e41148ebc02b4"`
[INFO] [stdout] 2ae716ba6fbf4d078e9d2709d7a21e8464cfbdfd50fff396383e41148ebc02b4