[INFO] cloning repository https://github.com/oussamarouabah/rust_by_example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oussamarouabah/rust_by_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foussamarouabah%2Frust_by_example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foussamarouabah%2Frust_by_example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6789ea30e7ba194f5994b36d81b68dc308cdb621
[INFO] building oussamarouabah/rust_by_example against master#461e8078010433ff7de2db2aaae8a3cfb0847215 for pr-94962
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foussamarouabah%2Frust_by_example" "/workspace/builds/worker-43/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-43/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oussamarouabah/rust_by_example on toolchain 461e8078010433ff7de2db2aaae8a3cfb0847215
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/oussamarouabah/rust_by_example
[INFO] finished tweaking git repo https://github.com/oussamarouabah/rust_by_example
[INFO] tweaked toml for git repo https://github.com/oussamarouabah/rust_by_example written to /workspace/builds/worker-43/source/Cargo.toml
[INFO] crate git repo https://github.com/oussamarouabah/rust_by_example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "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-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 065f93ad30ba44d1c97e06e68000d7504c33f2929137df17c208fc8b8b40cbc6
[INFO] running `Command { std: "docker" "start" "-a" "065f93ad30ba44d1c97e06e68000d7504c33f2929137df17c208fc8b8b40cbc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "065f93ad30ba44d1c97e06e68000d7504c33f2929137df17c208fc8b8b40cbc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "065f93ad30ba44d1c97e06e68000d7504c33f2929137df17c208fc8b8b40cbc6", kill_on_drop: false }`
[INFO] [stdout] 065f93ad30ba44d1c97e06e68000d7504c33f2929137df17c208fc8b8b40cbc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 353201418c3cd36f4f3330bdabc7f5a1f8c0e589acade1ab4203be070764e785
[INFO] running `Command { std: "docker" "start" "-a" "353201418c3cd36f4f3330bdabc7f5a1f8c0e589acade1ab4203be070764e785", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_by_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]  --> src/struct/bin/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     name: &'a str,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/struct/bin/main.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `age`
[INFO] [stdout]  --> src/struct/bin/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     age: u8,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/struct/bin/main.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.57s
[INFO] running `Command { std: "docker" "inspect" "353201418c3cd36f4f3330bdabc7f5a1f8c0e589acade1ab4203be070764e785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "353201418c3cd36f4f3330bdabc7f5a1f8c0e589acade1ab4203be070764e785", kill_on_drop: false }`
[INFO] [stdout] 353201418c3cd36f4f3330bdabc7f5a1f8c0e589acade1ab4203be070764e785
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8f216e976dcc22118516d8f818f1f7e44c50d1f2db46488cc17567e5da0ac1a
[INFO] running `Command { std: "docker" "start" "-a" "c8f216e976dcc22118516d8f818f1f7e44c50d1f2db46488cc17567e5da0ac1a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_by_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]  --> src/struct/bin/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     name: &'a str,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/struct/bin/main.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `age`
[INFO] [stdout]  --> src/struct/bin/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     age: u8,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/struct/bin/main.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.16s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_by_example-e5729309e94ec04d)
[INFO] [stderr]   Executable unittests src/arrays/bin/main.rs (/opt/rustwide/target/debug/deps/arrays-8676e1023e23c93c)
[INFO] [stderr]   Executable unittests src/binding/bin/main.rs (/opt/rustwide/target/debug/deps/binding-15e8a5e735e23563)
[INFO] [stderr]   Executable unittests src/const/bin/main.rs (/opt/rustwide/target/debug/deps/const-38c6e9e841b57bee)
[INFO] [stderr]   Executable unittests src/enum/bin/main.rs (/opt/rustwide/target/debug/deps/enum-85f3ae72f0919040)
[INFO] [stderr]   Executable unittests src/formating/bin/main.rs (/opt/rustwide/target/debug/deps/formating-63eea25871e1a541)
[INFO] [stderr]   Executable unittests src/functions/bin/main.rs (/opt/rustwide/target/debug/deps/functions-7cfa6159314f65d1)
[INFO] [stderr]   Executable unittests src/linked_list/bin/main.rs (/opt/rustwide/target/debug/deps/linked_list-a099c55561ca18af)
[INFO] [stderr]   Executable unittests src/literals/bin/main.rs (/opt/rustwide/target/debug/deps/literals-821dd774df2d8f2a)
[INFO] [stderr]   Executable unittests src/struct/bin/main.rs (/opt/rustwide/target/debug/deps/struct-e9d1b3c8982a935e)
[INFO] [stderr]   Executable unittests src/tuples/bin/main.rs (/opt/rustwide/target/debug/deps/tuples-8da9dc7dfd468e4b)
[INFO] running `Command { std: "docker" "inspect" "c8f216e976dcc22118516d8f818f1f7e44c50d1f2db46488cc17567e5da0ac1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8f216e976dcc22118516d8f818f1f7e44c50d1f2db46488cc17567e5da0ac1a", kill_on_drop: false }`
[INFO] [stdout] c8f216e976dcc22118516d8f818f1f7e44c50d1f2db46488cc17567e5da0ac1a