[INFO] updating cached repository Shaheennamboori/Enum_Rust_lesson
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Shaheennamboori/Enum_Rust_lesson
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Shaheennamboori/Enum_Rust_lesson" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Shaheennamboori/Enum_Rust_lesson"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Shaheennamboori/Enum_Rust_lesson'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Shaheennamboori/Enum_Rust_lesson" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Shaheennamboori/Enum_Rust_lesson"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Shaheennamboori/Enum_Rust_lesson'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2db971f03682df03566155c607dfe2b019d4cec5
[INFO] sha for GitHub repo Shaheennamboori/Enum_Rust_lesson: 2db971f03682df03566155c607dfe2b019d4cec5
[INFO] validating manifest of Shaheennamboori/Enum_Rust_lesson on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Shaheennamboori/Enum_Rust_lesson on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Shaheennamboori/Enum_Rust_lesson
[INFO] finished frobbing Shaheennamboori/Enum_Rust_lesson
[INFO] frobbed toml for Shaheennamboori/Enum_Rust_lesson written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Shaheennamboori/Enum_Rust_lesson/Cargo.toml
[INFO] started frobbing Shaheennamboori/Enum_Rust_lesson
[INFO] finished frobbing Shaheennamboori/Enum_Rust_lesson
[INFO] frobbed toml for Shaheennamboori/Enum_Rust_lesson written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Shaheennamboori/Enum_Rust_lesson/Cargo.toml
[INFO] crate Shaheennamboori/Enum_Rust_lesson already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Shaheennamboori/Enum_Rust_lesson against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-5/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Shaheennamboori/Enum_Rust_lesson:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 26d286b98b46d31f0fa0f6fd41b3f8697e749043a0a59bf8df4b6915bd215c2c
[INFO] running `"docker" "start" "-a" "26d286b98b46d31f0fa0f6fd41b3f8697e749043a0a59bf8df4b6915bd215c2c"`
[INFO] [stderr]     Checking enum_lesson v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variant is never constructed: `Up`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     Up,
[INFO] [stderr]   |     ^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Left,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Right
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Up`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     Up,
[INFO] [stderr]   |     ^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Left,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Right
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `"docker" "inspect" "26d286b98b46d31f0fa0f6fd41b3f8697e749043a0a59bf8df4b6915bd215c2c"`
[INFO] running `"docker" "rm" "-f" "26d286b98b46d31f0fa0f6fd41b3f8697e749043a0a59bf8df4b6915bd215c2c"`
[INFO] [stdout] 26d286b98b46d31f0fa0f6fd41b3f8697e749043a0a59bf8df4b6915bd215c2c