[INFO] updating cached repository iepathos/rust_testing_tutorial
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/iepathos/rust_testing_tutorial
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/iepathos/rust_testing_tutorial" "work/ex/beta-1.38-1/sources/1.37.0/gh/iepathos/rust_testing_tutorial"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/iepathos/rust_testing_tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/iepathos/rust_testing_tutorial" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/iepathos/rust_testing_tutorial"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/iepathos/rust_testing_tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f1874c7f67ae0b074f59206d08506163f3c736fc
[INFO] sha for GitHub repo iepathos/rust_testing_tutorial: f1874c7f67ae0b074f59206d08506163f3c736fc
[INFO] validating manifest of iepathos/rust_testing_tutorial 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 iepathos/rust_testing_tutorial 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 iepathos/rust_testing_tutorial
[INFO] finished frobbing iepathos/rust_testing_tutorial
[INFO] frobbed toml for iepathos/rust_testing_tutorial written to work/ex/beta-1.38-1/sources/1.37.0/gh/iepathos/rust_testing_tutorial/Cargo.toml
[INFO] started frobbing iepathos/rust_testing_tutorial
[INFO] finished frobbing iepathos/rust_testing_tutorial
[INFO] frobbed toml for iepathos/rust_testing_tutorial written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/iepathos/rust_testing_tutorial/Cargo.toml
[INFO] crate iepathos/rust_testing_tutorial 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 iepathos/rust_testing_tutorial against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/iepathos/rust_testing_tutorial:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 2987cdcff248215aa34ce89b5efdd5d76af980a5a2e977ad36d21df70ff51e2c
[INFO] running `"docker" "start" "-a" "2987cdcff248215aa34ce89b5efdd5d76af980a5a2e977ad36d21df70ff51e2c"`
[INFO] [stderr]    Compiling testing_tutorial v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error: invalid suffix `i` for integer literal
[INFO] [stderr]   --> src/lib.rs:16:32
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let result = add_three(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]   --> src/lib.rs:23:33
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let result = 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[E0412]: cannot find type `int` in this scope
[INFO] [stderr]  --> src/lib.rs:1:32
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn add_three_times_four(x: int) -> int {
[INFO] [stderr]   |                                ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `int` in this scope
[INFO] [stderr]  --> src/lib.rs:1:40
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn add_three_times_four(x: int) -> int {
[INFO] [stderr]   |                                        ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `int` in this scope
[INFO] [stderr]  --> src/lib.rs:5:17
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn add_three(x: int) -> int { x + 3 }
[INFO] [stderr]   |                 ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `int` in this scope
[INFO] [stderr]  --> src/lib.rs:5:25
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn add_three(x: int) -> int { x + 3 }
[INFO] [stderr]   |                         ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `int` in this scope
[INFO] [stderr]  --> src/lib.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn times_four(x: int) -> int { x * 4 }
[INFO] [stderr]   |                  ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `int` in this scope
[INFO] [stderr]  --> src/lib.rs:7:26
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn times_four(x: int) -> int { x * 4 }
[INFO] [stderr]   |                          ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0412`.
[INFO] [stderr] error: Could not compile `testing_tutorial`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2987cdcff248215aa34ce89b5efdd5d76af980a5a2e977ad36d21df70ff51e2c"`
[INFO] running `"docker" "rm" "-f" "2987cdcff248215aa34ce89b5efdd5d76af980a5a2e977ad36d21df70ff51e2c"`
[INFO] [stdout] 2987cdcff248215aa34ce89b5efdd5d76af980a5a2e977ad36d21df70ff51e2c