[INFO] fetching crate e9571_lib1 0.1.2...
[INFO] building e9571_lib1-0.1.2 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate e9571_lib1 0.1.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate e9571_lib1 0.1.2
[INFO] finished tweaking crates.io crate e9571_lib1 0.1.2
[INFO] tweaked toml for crates.io crate e9571_lib1 0.1.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate e9571_lib1 0.1.2 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate e9571_lib1 0.1.2 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded neli-proc-macros v0.1.4
[INFO] [stderr]   Downloaded md5 v0.8.0
[INFO] [stderr]   Downloaded local-ip-address v0.6.5
[INFO] [stderr]   Downloaded neli v0.6.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b70bd87d17bce8adfb709f26d5c459a788ed4e757da9f1bb1f2c108a4916eaf
[INFO] running `Command { std: "docker" "start" "-a" "6b70bd87d17bce8adfb709f26d5c459a788ed4e757da9f1bb1f2c108a4916eaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b70bd87d17bce8adfb709f26d5c459a788ed4e757da9f1bb1f2c108a4916eaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b70bd87d17bce8adfb709f26d5c459a788ed4e757da9f1bb1f2c108a4916eaf", kill_on_drop: false }`
[INFO] [stdout] 6b70bd87d17bce8adfb709f26d5c459a788ed4e757da9f1bb1f2c108a4916eaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f1d249b286cc9305fa243f864112226bc2927dcac11dd7d4481d3a3acaf1615
[INFO] running `Command { std: "docker" "start" "-a" "3f1d249b286cc9305fa243f864112226bc2927dcac11dd7d4481d3a3acaf1615", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling cc v1.2.32
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[INFO] [stderr]    Compiling rand_core v0.9.3
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[INFO] [stderr]    Compiling chrono v0.4.41
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[INFO] [stderr]    Compiling regex-automata v0.4.9
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[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling hyper-util v0.1.16
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[INFO] [stderr]    Compiling neli-proc-macros v0.1.4
[INFO] [stderr]    Compiling hyper-tls v0.6.0
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[INFO] [stderr]    Compiling neli v0.6.5
[INFO] [stderr]    Compiling local-ip-address v0.6.5
[INFO] [stderr]    Compiling e9571_lib1 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `int_regex`
[INFO] [stdout]    --> src/lib.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let int_regex = Regex::new(r"[+-]?\d+").unwrap();
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_int_regex`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float_regex`
[INFO] [stdout]    --> src/lib.rs:108:17
[INFO] [stdout]     |
[INFO] [stdout] 108 |             let float_regex = Regex::new(r"[+-]?\d+\.\d+").unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_float_regex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `regex`
[INFO] [stdout]    --> src/lib.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |         let regex = Regex::new(r"[A-Za-z\d]+").unwrap();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_regex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `regex`
[INFO] [stdout]    --> src/lib.rs:126:13
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let regex = Regex::new(r"[A-Za-z]+").unwrap();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_regex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `str::<impl str>::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         result.replace("*/", "\\*/");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this returns the replaced string as a new allocation, without modifying the original
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let _ = result.replace("*/", "\\*/");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 57.35s
[INFO] running `Command { std: "docker" "inspect" "3f1d249b286cc9305fa243f864112226bc2927dcac11dd7d4481d3a3acaf1615", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f1d249b286cc9305fa243f864112226bc2927dcac11dd7d4481d3a3acaf1615", kill_on_drop: false }`
[INFO] [stdout] 3f1d249b286cc9305fa243f864112226bc2927dcac11dd7d4481d3a3acaf1615
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e46160d621d5132fbf4f9f4954903b02de95b39b7fa8bf5b3e9fd97f3bbe4568
[INFO] running `Command { std: "docker" "start" "-a" "e46160d621d5132fbf4f9f4954903b02de95b39b7fa8bf5b3e9fd97f3bbe4568", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `int_regex`
[INFO] [stdout]    --> src/lib.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let int_regex = Regex::new(r"[+-]?\d+").unwrap();
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_int_regex`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float_regex`
[INFO] [stdout]    --> src/lib.rs:108:17
[INFO] [stdout]     |
[INFO] [stdout] 108 |             let float_regex = Regex::new(r"[+-]?\d+\.\d+").unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_float_regex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `regex`
[INFO] [stdout]    --> src/lib.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |         let regex = Regex::new(r"[A-Za-z\d]+").unwrap();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_regex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `regex`
[INFO] [stdout]    --> src/lib.rs:126:13
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let regex = Regex::new(r"[A-Za-z]+").unwrap();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_regex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `str::<impl str>::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         result.replace("*/", "\\*/");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this returns the replaced string as a new allocation, without modifying the original
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let _ = result.replace("*/", "\\*/");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling e9571_lib1 v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `int_regex`
[INFO] [stdout]    --> src/lib.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let int_regex = Regex::new(r"[+-]?\d+").unwrap();
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_int_regex`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `float_regex`
[INFO] [stdout]    --> src/lib.rs:108:17
[INFO] [stdout]     |
[INFO] [stdout] 108 |             let float_regex = Regex::new(r"[+-]?\d+\.\d+").unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_float_regex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `regex`
[INFO] [stdout]    --> src/lib.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |         let regex = Regex::new(r"[A-Za-z\d]+").unwrap();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_regex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `regex`
[INFO] [stdout]    --> src/lib.rs:126:13
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let regex = Regex::new(r"[A-Za-z]+").unwrap();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_regex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `str::<impl str>::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         result.replace("*/", "\\*/");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this returns the replaced string as a new allocation, without modifying the original
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let _ = result.replace("*/", "\\*/");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "e46160d621d5132fbf4f9f4954903b02de95b39b7fa8bf5b3e9fd97f3bbe4568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e46160d621d5132fbf4f9f4954903b02de95b39b7fa8bf5b3e9fd97f3bbe4568", kill_on_drop: false }`
[INFO] [stdout] e46160d621d5132fbf4f9f4954903b02de95b39b7fa8bf5b3e9fd97f3bbe4568