[INFO] updating cached repository https://github.com/peniqliotuv/learning-rust
[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] 1aa7ae42c3950f2cb0374926fb42ae0fed2854ef
[INFO] testing peniqliotuv/learning-rust against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeniqliotuv%2Flearning-rust" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/peniqliotuv/learning-rust on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/peniqliotuv/learning-rust
[INFO] finished tweaking git repo https://github.com/peniqliotuv/learning-rust
[INFO] tweaked toml for git repo https://github.com/peniqliotuv/learning-rust written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/peniqliotuv/learning-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.44.0" "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] 02ee87da6882f3e6768aa683eca7ffe1458b8fc9e0cc73237cb54cd80e8d0038
[INFO] running `"docker" "start" "-a" "02ee87da6882f3e6768aa683eca7ffe1458b8fc9e0cc73237cb54cd80e8d0038"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `file_contents`
[INFO] [stderr]  --> src/lib.rs:5:7
[INFO] [stderr]   |
[INFO] [stderr] 5 |   let file_contents = fs::read_to_string(config.filename)?;
[INFO] [stderr]   |       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_contents`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]  --> src/main.rs:9:51
[INFO] [stderr]   |
[INFO] [stderr] 9 |   let config = Config::new(&args).unwrap_or_else(|e| {
[INFO] [stderr]   |                                                   ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `"docker" "inspect" "02ee87da6882f3e6768aa683eca7ffe1458b8fc9e0cc73237cb54cd80e8d0038"`
[INFO] running `"docker" "rm" "-f" "02ee87da6882f3e6768aa683eca7ffe1458b8fc9e0cc73237cb54cd80e8d0038"`
[INFO] [stdout] 02ee87da6882f3e6768aa683eca7ffe1458b8fc9e0cc73237cb54cd80e8d0038
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.44.0" "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] 96cc9417e5fc61e011540704733b68fdbe10c7345fd54fe78f49294a0f3fe94b
[INFO] running `"docker" "start" "-a" "96cc9417e5fc61e011540704733b68fdbe10c7345fd54fe78f49294a0f3fe94b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `file_contents`
[INFO] [stderr]  --> src/lib.rs:5:7
[INFO] [stderr]   |
[INFO] [stderr] 5 |   let file_contents = fs::read_to_string(config.filename)?;
[INFO] [stderr]   |       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_contents`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]  --> src/main.rs:9:51
[INFO] [stderr]   |
[INFO] [stderr] 9 |   let config = Config::new(&args).unwrap_or_else(|e| {
[INFO] [stderr]   |                                                   ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_contents`
[INFO] [stderr]  --> src/lib.rs:5:7
[INFO] [stderr]   |
[INFO] [stderr] 5 |   let file_contents = fs::read_to_string(config.filename)?;
[INFO] [stderr]   |       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_contents`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `"docker" "inspect" "96cc9417e5fc61e011540704733b68fdbe10c7345fd54fe78f49294a0f3fe94b"`
[INFO] running `"docker" "rm" "-f" "96cc9417e5fc61e011540704733b68fdbe10c7345fd54fe78f49294a0f3fe94b"`
[INFO] [stdout] 96cc9417e5fc61e011540704733b68fdbe10c7345fd54fe78f49294a0f3fe94b
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.44.0" "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] af58017fee91e7f37c1923ce63ff411a9d5b02c94ceb98c9e6fd585b323e1db9
[INFO] running `"docker" "start" "-a" "af58017fee91e7f37c1923ce63ff411a9d5b02c94ceb98c9e6fd585b323e1db9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused variable: `file_contents`
[INFO] [stderr]  --> src/lib.rs:5:7
[INFO] [stderr]   |
[INFO] [stderr] 5 |   let file_contents = fs::read_to_string(config.filename)?;
[INFO] [stderr]   |       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_contents`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_contents`
[INFO] [stderr]  --> src/lib.rs:5:7
[INFO] [stderr]   |
[INFO] [stderr] 5 |   let file_contents = fs::read_to_string(config.filename)?;
[INFO] [stderr]   |       ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_contents`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]  --> src/main.rs:9:51
[INFO] [stderr]   |
[INFO] [stderr] 9 |   let config = Config::new(&args).unwrap_or_else(|e| {
[INFO] [stderr]   |                                                   ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/minigrep-5b7905a9bf3abd41
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/minigrep-559a7820507f342d
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::test_config_constructor_invalid ... ok
[INFO] [stdout] test test::test_config_constructor ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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]    Doc-tests minigrep
[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] running `"docker" "inspect" "af58017fee91e7f37c1923ce63ff411a9d5b02c94ceb98c9e6fd585b323e1db9"`
[INFO] running `"docker" "rm" "-f" "af58017fee91e7f37c1923ce63ff411a9d5b02c94ceb98c9e6fd585b323e1db9"`
[INFO] [stdout] af58017fee91e7f37c1923ce63ff411a9d5b02c94ceb98c9e6fd585b323e1db9