[INFO] updating cached repository jellelicht/rust-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jellelicht/rust-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jellelicht/rust-playground" "work/ex/beta-1.38-1/sources/1.37.0/gh/jellelicht/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jellelicht/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jellelicht/rust-playground" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jellelicht/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jellelicht/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a840f0945e132c1cf48d9832cff243bdd2fc59c6
[INFO] sha for GitHub repo jellelicht/rust-playground: a840f0945e132c1cf48d9832cff243bdd2fc59c6
[INFO] validating manifest of jellelicht/rust-playground 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 jellelicht/rust-playground 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 jellelicht/rust-playground
[INFO] finished frobbing jellelicht/rust-playground
[INFO] frobbed toml for jellelicht/rust-playground written to work/ex/beta-1.38-1/sources/1.37.0/gh/jellelicht/rust-playground/Cargo.toml
[INFO] started frobbing jellelicht/rust-playground
[INFO] finished frobbing jellelicht/rust-playground
[INFO] frobbed toml for jellelicht/rust-playground written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jellelicht/rust-playground/Cargo.toml
[INFO] crate jellelicht/rust-playground 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 jellelicht/rust-playground 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jellelicht/rust-playground:/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] 64d4e01872ae2d00a8dc5a6d62f1a31323fb29b47d90753749886b26dbd5d056
[INFO] running `"docker" "start" "-a" "64d4e01872ae2d00a8dc5a6d62f1a31323fb29b47d90753749886b26dbd5d056"`
[INFO] [stderr]    Compiling rust-playground v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "64d4e01872ae2d00a8dc5a6d62f1a31323fb29b47d90753749886b26dbd5d056"`
[INFO] running `"docker" "rm" "-f" "64d4e01872ae2d00a8dc5a6d62f1a31323fb29b47d90753749886b26dbd5d056"`
[INFO] [stdout] 64d4e01872ae2d00a8dc5a6d62f1a31323fb29b47d90753749886b26dbd5d056
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jellelicht/rust-playground:/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] 6b442d708e7462f6a37074c25378451d1c0017174ea22cf119772f7019ac90a7
[INFO] running `"docker" "start" "-a" "6b442d708e7462f6a37074c25378451d1c0017174ea22cf119772f7019ac90a7"`
[INFO] [stderr]    Compiling rust-playground v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error: invalid suffix `i` for integer literal
[INFO] [stderr]  --> tests/lib.rs:3:39
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let result = add_three_times_four(5i);
[INFO] [stderr]   |                                       ^^ invalid suffix `i`
[INFO] [stderr]   |
[INFO] [stderr]   = help: the suffix must be one of the integral types (`u32`, `isize`, etc)
[INFO] [stderr] 
[INFO] [stderr] error: invalid suffix `i` for integer literal
[INFO] [stderr]  --> tests/lib.rs:5:16
[INFO] [stderr]   |
[INFO] [stderr] 5 |     assert_eq!(32i, result);
[INFO] [stderr]   |                ^^^ invalid suffix `i`
[INFO] [stderr]   |
[INFO] [stderr]   = help: the suffix must be one of the integral types (`u32`, `isize`, etc)
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `add_three_times_four` in this scope
[INFO] [stderr]  --> tests/lib.rs:3:18
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let result = add_three_times_four(5i);
[INFO] [stderr]   |                  ^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `rust-playground`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "6b442d708e7462f6a37074c25378451d1c0017174ea22cf119772f7019ac90a7"`
[INFO] running `"docker" "rm" "-f" "6b442d708e7462f6a37074c25378451d1c0017174ea22cf119772f7019ac90a7"`
[INFO] [stdout] 6b442d708e7462f6a37074c25378451d1c0017174ea22cf119772f7019ac90a7