[INFO] updating cached repository smerrell/rust-presentation
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/smerrell/rust-presentation
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/smerrell/rust-presentation" "work/ex/beta-1.38-1/sources/1.37.0/gh/smerrell/rust-presentation"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/smerrell/rust-presentation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/smerrell/rust-presentation" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/smerrell/rust-presentation"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/smerrell/rust-presentation'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f9d7857aaf32aa1564d2a0470b1d5c7bf7b6ba72
[INFO] sha for GitHub repo smerrell/rust-presentation: f9d7857aaf32aa1564d2a0470b1d5c7bf7b6ba72
[INFO] validating manifest of smerrell/rust-presentation 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 smerrell/rust-presentation 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 smerrell/rust-presentation
[INFO] finished frobbing smerrell/rust-presentation
[INFO] frobbed toml for smerrell/rust-presentation written to work/ex/beta-1.38-1/sources/1.37.0/gh/smerrell/rust-presentation/Cargo.toml
[INFO] started frobbing smerrell/rust-presentation
[INFO] finished frobbing smerrell/rust-presentation
[INFO] frobbed toml for smerrell/rust-presentation written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/smerrell/rust-presentation/Cargo.toml
[INFO] crate smerrell/rust-presentation 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/smerrell/rust-presentation/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[INFO] the lockfile is outdated, regenerating it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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 smerrell/rust-presentation 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/smerrell/rust-presentation:/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] 8e724522555c3ef30bd29ca7a70903cd2132b36f77417f585226089fe119df7b
[INFO] running `"docker" "start" "-a" "8e724522555c3ef30bd29ca7a70903cd2132b36f77417f585226089fe119df7b"`
[INFO] [stderr]    Compiling playground v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(core_intrinsics)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/functions.rs:57:23
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn create_fn() -> Box<Fn()> {
[INFO] [stderr]    |                       ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/matching.rs:24:15
[INFO] [stderr]    |
[INFO] [stderr] 24 |         m @ 5 ... 9 => println!("five through nine! Got {}", m),
[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/matching.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |         'a' ... 'h' => println!("early letters"),
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/matching.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |         'j' ... 'z' => println!("late letters"),
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[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 `playground`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8e724522555c3ef30bd29ca7a70903cd2132b36f77417f585226089fe119df7b"`
[INFO] running `"docker" "rm" "-f" "8e724522555c3ef30bd29ca7a70903cd2132b36f77417f585226089fe119df7b"`
[INFO] [stdout] 8e724522555c3ef30bd29ca7a70903cd2132b36f77417f585226089fe119df7b