[INFO] cloning repository https://github.com/pietrocarbo/rust_first_steps [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pietrocarbo/rust_first_steps" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpietrocarbo%2Frust_first_steps", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpietrocarbo%2Frust_first_steps'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ab44a82cc79245986e93b857b57d532f63df8a11 [INFO] checking pietrocarbo/rust_first_steps against try#c0a9760914bada211f4924ee16d41ae1a366d2ba for pr-148545 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpietrocarbo%2Frust_first_steps" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/pietrocarbo/rust_first_steps [INFO] finished tweaking git repo https://github.com/pietrocarbo/rust_first_steps [INFO] tweaked toml for git repo https://github.com/pietrocarbo/rust_first_steps written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/pietrocarbo/rust_first_steps on toolchain c0a9760914bada211f4924ee16d41ae1a366d2ba [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/pietrocarbo/rust_first_steps 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" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded libc v0.2.41 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d2f83fe892484bbd9d4fee6adf71d49f679d0900a2fd4b18b4a88f9fb2ceae11 [INFO] running `Command { std: "docker" "start" "-a" "d2f83fe892484bbd9d4fee6adf71d49f679d0900a2fd4b18b4a88f9fb2ceae11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d2f83fe892484bbd9d4fee6adf71d49f679d0900a2fd4b18b4a88f9fb2ceae11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d2f83fe892484bbd9d4fee6adf71d49f679d0900a2fd4b18b4a88f9fb2ceae11", kill_on_drop: false }` [INFO] [stdout] d2f83fe892484bbd9d4fee6adf71d49f679d0900a2fd4b18b4a88f9fb2ceae11 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 35d32ff25d3fdff36baba0115367d1903e9b0127476711b0b36275a0bc62239f [INFO] running `Command { std: "docker" "start" "-a" "35d32ff25d3fdff36baba0115367d1903e9b0127476711b0b36275a0bc62239f", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Checking libc v0.2.41 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking rand v0.3.22 [INFO] [stderr] Checking presentation v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/3_error_IO.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | Io(io::Error), // we could add more meaningful data [INFO] [stdout] | -- ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `CustomError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 8 - Io(io::Error), // we could add more meaningful data [INFO] [stdout] 8 + Io(()), // we could add more meaningful data [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/3_error_IO.rs:9:11 [INFO] [stdout] | [INFO] [stdout] 9 | Parse(num::ParseIntError), [INFO] [stdout] | ----- ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `CustomError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 9 - Parse(num::ParseIntError), [INFO] [stdout] 9 + Parse(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `file_parse_verbose` is never used [INFO] [stdout] --> src/bin/3_error_IO.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn file_parse_verbose>(file_path: P) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/3_error_IO.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | Io(io::Error), // we could add more meaningful data [INFO] [stdout] | -- ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `CustomError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 8 - Io(io::Error), // we could add more meaningful data [INFO] [stdout] 8 + Io(()), // we could add more meaningful data [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/3_error_IO.rs:9:11 [INFO] [stdout] | [INFO] [stdout] 9 | Parse(num::ParseIntError), [INFO] [stdout] | ----- ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `CustomError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 9 - Parse(num::ParseIntError), [INFO] [stdout] 9 + Parse(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `file_parse_verbose` is never used [INFO] [stdout] --> src/bin/3_error_IO.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn file_parse_verbose>(file_path: P) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.45s [INFO] running `Command { std: "docker" "inspect" "35d32ff25d3fdff36baba0115367d1903e9b0127476711b0b36275a0bc62239f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "35d32ff25d3fdff36baba0115367d1903e9b0127476711b0b36275a0bc62239f", kill_on_drop: false }` [INFO] [stdout] 35d32ff25d3fdff36baba0115367d1903e9b0127476711b0b36275a0bc62239f