[INFO] cloning repository https://github.com/jmatta697/matta_bc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmatta697/matta_bc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmatta697%2Fmatta_bc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmatta697%2Fmatta_bc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3ead6621c2c413d844175868839063592f32468c
[INFO] testing jmatta697/matta_bc against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmatta697%2Fmatta_bc" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmatta697/matta_bc on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jmatta697/matta_bc
[INFO] finished tweaking git repo https://github.com/jmatta697/matta_bc
[INFO] tweaked toml for git repo https://github.com/jmatta697/matta_bc written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/jmatta697/matta_bc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e598239f8b545c0291e1871aa420088e59d83fffc428a1227058ad3a1446dc4
[INFO] running `Command { std: "docker" "start" "-a" "5e598239f8b545c0291e1871aa420088e59d83fffc428a1227058ad3a1446dc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e598239f8b545c0291e1871aa420088e59d83fffc428a1227058ad3a1446dc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e598239f8b545c0291e1871aa420088e59d83fffc428a1227058ad3a1446dc4", kill_on_drop: false }`
[INFO] [stdout] 5e598239f8b545c0291e1871aa420088e59d83fffc428a1227058ad3a1446dc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42d7cc8e0bbc1bb57129e3e2d689818af75478c6e5dcb883dbf7c69c439cfc3e
[INFO] running `Command { std: "docker" "start" "-a" "42d7cc8e0bbc1bb57129e3e2d689818af75478c6e5dcb883dbf7c69c439cfc3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling ucd-util v0.1.2
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling regex-syntax v0.6.3
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling matta_bc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `variable_value_str` is never read
[INFO] [stdout]    --> src/main.rs:424:13
[INFO] [stdout]     |
[INFO] [stdout] 424 |     let mut variable_value_str = String::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.47s
[INFO] running `Command { std: "docker" "inspect" "42d7cc8e0bbc1bb57129e3e2d689818af75478c6e5dcb883dbf7c69c439cfc3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42d7cc8e0bbc1bb57129e3e2d689818af75478c6e5dcb883dbf7c69c439cfc3e", kill_on_drop: false }`
[INFO] [stdout] 42d7cc8e0bbc1bb57129e3e2d689818af75478c6e5dcb883dbf7c69c439cfc3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa2cfcf333b7876ba659234487569d836e5bad964d69651e7d3dacd0d96b9988
[INFO] running `Command { std: "docker" "start" "-a" "aa2cfcf333b7876ba659234487569d836e5bad964d69651e7d3dacd0d96b9988", kill_on_drop: false }`
[INFO] [stderr]    Compiling matta_bc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `variable_value_str` is never read
[INFO] [stdout]    --> src/main.rs:424:13
[INFO] [stdout]     |
[INFO] [stdout] 424 |     let mut variable_value_str = String::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.05s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/matta_bc-17d41daff7a3b618)
[INFO] running `Command { std: "docker" "inspect" "aa2cfcf333b7876ba659234487569d836e5bad964d69651e7d3dacd0d96b9988", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa2cfcf333b7876ba659234487569d836e5bad964d69651e7d3dacd0d96b9988", kill_on_drop: false }`
[INFO] [stdout] aa2cfcf333b7876ba659234487569d836e5bad964d69651e7d3dacd0d96b9988
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4fc88f1482be4e40b3703910c0589a4f34d0ea34c0ddae5fc4978318fd29ec3d
[INFO] running `Command { std: "docker" "start" "-a" "4fc88f1482be4e40b3703910c0589a4f34d0ea34c0ddae5fc4978318fd29ec3d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: value assigned to `variable_value_str` is never read
[INFO] [stderr]    --> src/main.rs:424:13
[INFO] [stderr]     |
[INFO] [stderr] 424 |     let mut variable_value_str = String::new();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `matta_bc` (bin "matta_bc" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/matta_bc-17d41daff7a3b618)
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test test_apply_operation ... ok
[INFO] [stdout] test test_check_first_char_in_exp ... ok
[INFO] [stdout] test test_check_last_char ... ok
[INFO] [stdout] test test_check_expr_syntax ... ok
[INFO] [stdout] test test_evaluate_comparison_expression ... ok
[INFO] [stdout] test test_count_valid_parentheses ... ok
[INFO] [stdout] test test_evaluate_clean_expression ... ok
[INFO] [stdout] test test_check_only_valid_chars ... ok
[INFO] [stdout] test test_expression_string_to_vector ... ok
[INFO] [stdout] test test_extract_comparison_notation ... ok
[INFO] [stdout] test test_get_variable_value ... ok
[INFO] [stdout] test test_handle_comparison_expression ... ok
[INFO] [stdout] test test_handle_variable_declaration ... ok
[INFO] [stdout] test test_is_a_variable_assignment ... ok
[INFO] [stdout] test test_operator_precedence ... ok
[INFO] [stdout] test test_remove_all_white_space_from_string ... ok
[INFO] [stdout] test test_split_comparison_string ... ok
[INFO] [stdout] test test_string_has_comparison ... ok
[INFO] [stdout] test test_replace_variable_references_with_value_strings ... ok
[INFO] [stdout] test test_valid_expression_str ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4fc88f1482be4e40b3703910c0589a4f34d0ea34c0ddae5fc4978318fd29ec3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fc88f1482be4e40b3703910c0589a4f34d0ea34c0ddae5fc4978318fd29ec3d", kill_on_drop: false }`
[INFO] [stdout] 4fc88f1482be4e40b3703910c0589a4f34d0ea34c0ddae5fc4978318fd29ec3d