[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/beta-1.38-1/sources/1.37.0/gh/Shaheennamboori/Enum_Rust_lesson"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Shaheennamboori/Enum_Rust_lesson'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Shaheennamboori/Enum_Rust_lesson" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Shaheennamboori/Enum_Rust_lesson"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Shaheennamboori/Enum_Rust_lesson on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Shaheennamboori/Enum_Rust_lesson against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 92e089141dbf7c4c20b2295cafce34d0ab321f70867bff5de6bfb0d6ed1c39e3
[INFO] running `"docker" "start" "-a" "92e089141dbf7c4c20b2295cafce34d0ab321f70867bff5de6bfb0d6ed1c39e3"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `"docker" "inspect" "92e089141dbf7c4c20b2295cafce34d0ab321f70867bff5de6bfb0d6ed1c39e3"`
[INFO] running `"docker" "rm" "-f" "92e089141dbf7c4c20b2295cafce34d0ab321f70867bff5de6bfb0d6ed1c39e3"`
[INFO] [stdout] 92e089141dbf7c4c20b2295cafce34d0ab321f70867bff5de6bfb0d6ed1c39e3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b5ade11c74aee92ca8798335021e44e32d8fdfed4101b0498525571192117302
[INFO] running `"docker" "start" "-a" "b5ade11c74aee92ca8798335021e44e32d8fdfed4101b0498525571192117302"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "b5ade11c74aee92ca8798335021e44e32d8fdfed4101b0498525571192117302"`
[INFO] running `"docker" "rm" "-f" "b5ade11c74aee92ca8798335021e44e32d8fdfed4101b0498525571192117302"`
[INFO] [stdout] b5ade11c74aee92ca8798335021e44e32d8fdfed4101b0498525571192117302
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 4124134d92ace1a953fce9a2019e4c283334f82a37ac60c8d9beec6313dfb9b3
[INFO] running `"docker" "start" "-a" "4124134d92ace1a953fce9a2019e4c283334f82a37ac60c8d9beec6313dfb9b3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/enum_lesson-9aa1b47e972623f5
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4124134d92ace1a953fce9a2019e4c283334f82a37ac60c8d9beec6313dfb9b3"`
[INFO] running `"docker" "rm" "-f" "4124134d92ace1a953fce9a2019e4c283334f82a37ac60c8d9beec6313dfb9b3"`
[INFO] [stdout] 4124134d92ace1a953fce9a2019e4c283334f82a37ac60c8d9beec6313dfb9b3