[INFO] updating cached repository cheezgi/pet-sim
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cheezgi/pet-sim
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cheezgi/pet-sim" "work/ex/beta-1.38-1/sources/1.37.0/gh/cheezgi/pet-sim"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/cheezgi/pet-sim'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cheezgi/pet-sim" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cheezgi/pet-sim"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cheezgi/pet-sim'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e6361ac055853107317b24caf3b6863ca86f262f
[INFO] sha for GitHub repo cheezgi/pet-sim: e6361ac055853107317b24caf3b6863ca86f262f
[INFO] validating manifest of cheezgi/pet-sim 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 cheezgi/pet-sim 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 cheezgi/pet-sim
[INFO] finished frobbing cheezgi/pet-sim
[INFO] frobbed toml for cheezgi/pet-sim written to work/ex/beta-1.38-1/sources/1.37.0/gh/cheezgi/pet-sim/Cargo.toml
[INFO] started frobbing cheezgi/pet-sim
[INFO] finished frobbing cheezgi/pet-sim
[INFO] frobbed toml for cheezgi/pet-sim written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cheezgi/pet-sim/Cargo.toml
[INFO] crate cheezgi/pet-sim 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 cheezgi/pet-sim 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/cheezgi/pet-sim:/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] 55af4bf992532444598725fa17f05b9694d89522671f8113a2148d27d962f6fd
[INFO] running `"docker" "start" "-a" "55af4bf992532444598725fa17f05b9694d89522671f8113a2148d27d962f6fd"`
[INFO] [stderr]    Compiling pet-sim v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(vec_remove_item)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/amt.rs:36:14
[INFO] [stderr]    |
[INFO] [stderr] 36 |             1...24 => Amount::Little,
[INFO] [stderr]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(ellipsis_inclusive_range_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/amt.rs:37:15
[INFO] [stderr]    |
[INFO] [stderr] 37 |             25...49 => Amount::Bit,
[INFO] [stderr]    |               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/amt.rs:38:15
[INFO] [stderr]    |
[INFO] [stderr] 38 |             50...75 => Amount::Some,
[INFO] [stderr]    |               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/lib.rs:59:44
[INFO] [stderr]    |
[INFO] [stderr] 59 |     (lhs as i16 + rhs.scale(scale) as i16).clamp(0, 100) as u8
[INFO] [stderr]    |                                            ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unstable_name_collisions)] on by default
[INFO] [stderr]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `clamp::Clamp::clamp(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/lib.rs:63:44
[INFO] [stderr]    |
[INFO] [stderr] 63 |     (lhs as i16 - rhs.scale(scale) as i16).clamp(0, 100) as u8
[INFO] [stderr]    |                                            ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `clamp::Clamp::clamp(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]    --> src/pet.rs:141:45
[INFO] [stderr]     |
[INFO] [stderr] 141 |         self.age = (self.age as i16 + 1i16).clamp(0, 255) as u8;
[INFO] [stderr]     |                                             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]     = help: call with fully qualified syntax `clamp::Clamp::clamp(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `pet-sim`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "55af4bf992532444598725fa17f05b9694d89522671f8113a2148d27d962f6fd"`
[INFO] running `"docker" "rm" "-f" "55af4bf992532444598725fa17f05b9694d89522671f8113a2148d27d962f6fd"`
[INFO] [stdout] 55af4bf992532444598725fa17f05b9694d89522671f8113a2148d27d962f6fd