[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 try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmatta697%2Fmatta_bc" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmatta697/matta_bc on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", 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-5/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8184d9947e8c291b6e693b52c90e3dc9cd962c7c2197d34ee054b4c7231c96d4
[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" "8184d9947e8c291b6e693b52c90e3dc9cd962c7c2197d34ee054b4c7231c96d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8184d9947e8c291b6e693b52c90e3dc9cd962c7c2197d34ee054b4c7231c96d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8184d9947e8c291b6e693b52c90e3dc9cd962c7c2197d34ee054b4c7231c96d4", kill_on_drop: false }`
[INFO] [stdout] 8184d9947e8c291b6e693b52c90e3dc9cd962c7c2197d34ee054b4c7231c96d4
[INFO] running `Command { std: "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18f622d175b154e9b6e94a240978031afc83d32b1f2b37db74f7ecf47da8f619
[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" "18f622d175b154e9b6e94a240978031afc83d32b1f2b37db74f7ecf47da8f619", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.5
[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 utf8-ranges v1.0.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.6.3
[INFO] [stderr]    Compiling memchr v2.1.1
[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:424:9
[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 18.58s
[INFO] running `Command { std: "docker" "inspect" "18f622d175b154e9b6e94a240978031afc83d32b1f2b37db74f7ecf47da8f619", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18f622d175b154e9b6e94a240978031afc83d32b1f2b37db74f7ecf47da8f619", kill_on_drop: false }`
[INFO] [stdout] 18f622d175b154e9b6e94a240978031afc83d32b1f2b37db74f7ecf47da8f619
[INFO] running `Command { std: "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a83f89b49a731a02d3ed45023b149c685b6b16b2f2fdd8f67aca33acc2da046
[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" "7a83f89b49a731a02d3ed45023b149c685b6b16b2f2fdd8f67aca33acc2da046", 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:424:9
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.49s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7a83f89b49a731a02d3ed45023b149c685b6b16b2f2fdd8f67aca33acc2da046", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a83f89b49a731a02d3ed45023b149c685b6b16b2f2fdd8f67aca33acc2da046", kill_on_drop: false }`
[INFO] [stdout] 7a83f89b49a731a02d3ed45023b149c685b6b16b2f2fdd8f67aca33acc2da046
[INFO] running `Command { std: "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d76426560fa63a7185ce9b4b2e81b0d3dfc10f082b1182d0923c337e1f7a3cf9
[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" "d76426560fa63a7185ce9b4b2e81b0d3dfc10f082b1182d0923c337e1f7a3cf9", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `variable_value_str` is never read
[INFO] [stderr]    --> src/main.rs:424:9
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/matta_bc-dc4b7c20f3e951c6
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test test_extract_comparison_notation ... ok
[INFO] [stdout] test test_handle_comparison_expression ... ok
[INFO] [stdout] test test_handle_variable_declaration ... ok
[INFO] [stdout] test test_operator_precedence ... ok
[INFO] [stdout] test test_apply_operation ... ok
[INFO] [stdout] test test_check_expr_syntax ... ok
[INFO] [stdout] test test_check_first_char_in_exp ... ok
[INFO] [stdout] test test_count_valid_parentheses ... ok
[INFO] [stdout] test test_is_a_variable_assignment ... ok
[INFO] [stdout] test test_evaluate_clean_expression ... ok
[INFO] [stdout] test test_check_last_char ... ok
[INFO] [stdout] test test_evaluate_comparison_expression ... ok
[INFO] [stdout] test test_expression_string_to_vector ... ok
[INFO] [stdout] test test_get_variable_value ... ok
[INFO] [stdout] test test_check_only_valid_chars ... ok
[INFO] [stdout] test test_split_comparison_string ... ok
[INFO] [stdout] test test_valid_expression_str ... ok
[INFO] [stdout] test test_remove_all_white_space_from_string ... ok
[INFO] [stdout] test test_string_has_comparison ... ok
[INFO] [stdout] test test_replace_variable_references_with_value_strings ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d76426560fa63a7185ce9b4b2e81b0d3dfc10f082b1182d0923c337e1f7a3cf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d76426560fa63a7185ce9b4b2e81b0d3dfc10f082b1182d0923c337e1f7a3cf9", kill_on_drop: false }`
[INFO] [stdout] d76426560fa63a7185ce9b4b2e81b0d3dfc10f082b1182d0923c337e1f7a3cf9