[INFO] cloning repository https://github.com/romAYAYA/rust-lectures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/romAYAYA/rust-lectures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FromAYAYA%2Frust-lectures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FromAYAYA%2Frust-lectures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2752efa2f0c8aab581b9687fd44e94887dad08b
[INFO] testing romAYAYA/rust-lectures against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FromAYAYA%2Frust-lectures" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/romAYAYA/rust-lectures
[INFO] finished tweaking git repo https://github.com/romAYAYA/rust-lectures
[INFO] tweaked toml for git repo https://github.com/romAYAYA/rust-lectures written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/romAYAYA/rust-lectures on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/romAYAYA/rust-lectures 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 393105a9f10462acc9a3dddf22edb7632e59c6b0754197226cbd55cab0982596
[INFO] running `Command { std: "docker" "start" "-a" "393105a9f10462acc9a3dddf22edb7632e59c6b0754197226cbd55cab0982596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "393105a9f10462acc9a3dddf22edb7632e59c6b0754197226cbd55cab0982596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "393105a9f10462acc9a3dddf22edb7632e59c6b0754197226cbd55cab0982596", kill_on_drop: false }`
[INFO] [stdout] 393105a9f10462acc9a3dddf22edb7632e59c6b0754197226cbd55cab0982596
[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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e17be487912f4383276b3d5243c39c153bb9454d161967da26f860704ff21822
[INFO] running `Command { std: "docker" "start" "-a" "e17be487912f4383276b3d5243c39c153bb9454d161967da26f860704ff21822", kill_on_drop: false }`
[INFO] [stderr]    Compiling ct_lectures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lecture1/mod.rs:126:16
[INFO] [stdout]     |
[INFO] [stdout] 126 |         Number(i32),
[INFO] [stdout]     |         ------ ^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MaybeNumber` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` 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] 126 -         Number(i32),
[INFO] [stdout] 126 +         Number(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]    --> src/lecture1/mod.rs:127:30
[INFO] [stdout]     |
[INFO] [stdout] 127 |         CheckAnotherNumber { inner: i32 },
[INFO] [stdout]     |         ------------------   ^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MaybeNumber` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `None` is never constructed
[INFO] [stdout]    --> src/lecture1/mod.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |     enum MaybeNumber {
[INFO] [stdout]     |          ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 128 |         None,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MaybeNumber` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "e17be487912f4383276b3d5243c39c153bb9454d161967da26f860704ff21822", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e17be487912f4383276b3d5243c39c153bb9454d161967da26f860704ff21822", kill_on_drop: false }`
[INFO] [stdout] e17be487912f4383276b3d5243c39c153bb9454d161967da26f860704ff21822
[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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32c30410c56814c3aacb547ba1918b4233e1cd875728d8e0c567765c64f5c910
[INFO] running `Command { std: "docker" "start" "-a" "32c30410c56814c3aacb547ba1918b4233e1cd875728d8e0c567765c64f5c910", kill_on_drop: false }`
[INFO] [stderr]    Compiling ct_lectures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lecture1/mod.rs:126:16
[INFO] [stdout]     |
[INFO] [stdout] 126 |         Number(i32),
[INFO] [stdout]     |         ------ ^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MaybeNumber` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` 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] 126 -         Number(i32),
[INFO] [stdout] 126 +         Number(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `inner` is never read
[INFO] [stdout]    --> src/lecture1/mod.rs:127:30
[INFO] [stdout]     |
[INFO] [stdout] 127 |         CheckAnotherNumber { inner: i32 },
[INFO] [stdout]     |         ------------------   ^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MaybeNumber` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `None` is never constructed
[INFO] [stdout]    --> src/lecture1/mod.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |     enum MaybeNumber {
[INFO] [stdout]     |          ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 128 |         None,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MaybeNumber` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "32c30410c56814c3aacb547ba1918b4233e1cd875728d8e0c567765c64f5c910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32c30410c56814c3aacb547ba1918b4233e1cd875728d8e0c567765c64f5c910", kill_on_drop: false }`
[INFO] [stdout] 32c30410c56814c3aacb547ba1918b4233e1cd875728d8e0c567765c64f5c910
[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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b5bc14e51d0bf8dba05707e913ccfed9b66263e67640ce58fa95ff2672061f89
[INFO] running `Command { std: "docker" "start" "-a" "b5bc14e51d0bf8dba05707e913ccfed9b66263e67640ce58fa95ff2672061f89", kill_on_drop: false }`
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/lecture1/mod.rs:126:16
[INFO] [stderr]     |
[INFO] [stderr] 126 |         Number(i32),
[INFO] [stderr]     |         ------ ^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         field in this variant
[INFO] [stderr]     |
[INFO] [stderr]     = note: `MaybeNumber` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]     |
[INFO] [stderr] 126 -         Number(i32),
[INFO] [stderr] 126 +         Number(()),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: field `inner` is never read
[INFO] [stderr]    --> src/lecture1/mod.rs:127:30
[INFO] [stderr]     |
[INFO] [stderr] 127 |         CheckAnotherNumber { inner: i32 },
[INFO] [stderr]     |         ------------------   ^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         field in this variant
[INFO] [stderr]     |
[INFO] [stderr]     = note: `MaybeNumber` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variant `None` is never constructed
[INFO] [stderr]    --> src/lecture1/mod.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |     enum MaybeNumber {
[INFO] [stderr]     |          ----------- variant in this enum
[INFO] [stderr] ...
[INFO] [stderr] 128 |         None,
[INFO] [stderr]     |         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `MaybeNumber` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `ct_lectures` (bin "ct_lectures" test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/ct_lectures-f17e6e398bf9962a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b5bc14e51d0bf8dba05707e913ccfed9b66263e67640ce58fa95ff2672061f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5bc14e51d0bf8dba05707e913ccfed9b66263e67640ce58fa95ff2672061f89", kill_on_drop: false }`
[INFO] [stdout] b5bc14e51d0bf8dba05707e913ccfed9b66263e67640ce58fa95ff2672061f89
