[INFO] updating cached repository oneminot/HelloRust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/oneminot/HelloRust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/oneminot/HelloRust" "work/ex/beta-1.38-1/sources/1.37.0/gh/oneminot/HelloRust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/oneminot/HelloRust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/oneminot/HelloRust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/oneminot/HelloRust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/oneminot/HelloRust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 89acb2c5bb47dc15db05fddbf465411e78b5d55f
[INFO] sha for GitHub repo oneminot/HelloRust: 89acb2c5bb47dc15db05fddbf465411e78b5d55f
[INFO] validating manifest of oneminot/HelloRust 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 oneminot/HelloRust 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 oneminot/HelloRust
[INFO] finished frobbing oneminot/HelloRust
[INFO] frobbed toml for oneminot/HelloRust written to work/ex/beta-1.38-1/sources/1.37.0/gh/oneminot/HelloRust/Cargo.toml
[INFO] started frobbing oneminot/HelloRust
[INFO] finished frobbing oneminot/HelloRust
[INFO] frobbed toml for oneminot/HelloRust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/oneminot/HelloRust/Cargo.toml
[INFO] crate oneminot/HelloRust 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/oneminot/HelloRust/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/semver.git`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/semver.git`
[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 oneminot/HelloRust 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/oneminot/HelloRust:/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] 0711e9963a79bc4efc72a521a14de205e3dd3af6da2b1b001458205147f5c057
[INFO] running `"docker" "start" "-a" "0711e9963a79bc4efc72a521a14de205e3dd3af6da2b1b001458205147f5c057"`
[INFO] [stderr]    Compiling semver v0.9.0 (https://github.com/rust-lang/semver.git#fc78b4ea)
[INFO] [stderr]    Compiling hello_world v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `v`
[INFO] [stderr]  --> src/main.rs:5:2
[INFO] [stderr]   |
[INFO] [stderr] 4 |     v = []
[INFO] [stderr]   |           - expected one of `.`, `;`, `?`, `}`, or an operator here
[INFO] [stderr] 5 |     v.push("Hello")
[INFO] [stderr]   |     ^ unexpected token
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `v` in this scope
[INFO] [stderr]  --> src/main.rs:4:2
[INFO] [stderr]   |
[INFO] [stderr] 4 |     v = []
[INFO] [stderr]   |     ^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `semver::Version`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use semver::Version;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `hello_world`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0711e9963a79bc4efc72a521a14de205e3dd3af6da2b1b001458205147f5c057"`
[INFO] running `"docker" "rm" "-f" "0711e9963a79bc4efc72a521a14de205e3dd3af6da2b1b001458205147f5c057"`
[INFO] [stdout] 0711e9963a79bc4efc72a521a14de205e3dd3af6da2b1b001458205147f5c057