[INFO] updating cached repository conundrumer/crossword [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/conundrumer/crossword [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/conundrumer/crossword" "work/ex/beta-1.38-1/sources/1.37.0/gh/conundrumer/crossword"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/conundrumer/crossword'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/conundrumer/crossword" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/conundrumer/crossword"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/conundrumer/crossword'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] cec0ee1cc7277c14c4afeb48fc9488b7fa941ab3 [INFO] sha for GitHub repo conundrumer/crossword: cec0ee1cc7277c14c4afeb48fc9488b7fa941ab3 [INFO] validating manifest of conundrumer/crossword 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 conundrumer/crossword 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 conundrumer/crossword [INFO] finished frobbing conundrumer/crossword [INFO] frobbed toml for conundrumer/crossword written to work/ex/beta-1.38-1/sources/1.37.0/gh/conundrumer/crossword/Cargo.toml [INFO] started frobbing conundrumer/crossword [INFO] finished frobbing conundrumer/crossword [INFO] frobbed toml for conundrumer/crossword written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/conundrumer/crossword/Cargo.toml [INFO] crate conundrumer/crossword 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 conundrumer/crossword 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-7/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/conundrumer/crossword:/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] b4ef8aa41753e0b14a8426ccef29b9b0f1b2961e69c26b03cfb7114afdc29958 [INFO] running `"docker" "start" "-a" "b4ef8aa41753e0b14a8426ccef29b9b0f1b2961e69c26b03cfb7114afdc29958"` [INFO] [stderr] Compiling crossword v0.1.0 (/opt/crater/workdir) [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stderr] --> src/main.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(conservative_impl_trait)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stderr] --> src/main.rs:3:1 [INFO] [stderr] | [INFO] [stderr] 3 | #![feature(test)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/grid.rs:25:21 [INFO] [stderr] | [INFO] [stderr] 25 | vec![Empty; ((bb.width() as usize) * (bb.height() as usize))] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/generate.rs:41:38 [INFO] [stderr] | [INFO] [stderr] 41 | pub fn iter<'b>(&'b self) -> Box + 'b> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator + 'b` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/generate.rs:46:62 [INFO] [stderr] | [INFO] [stderr] 46 | pub fn multi_iter<'b>(&'b self, num_iters: usize) -> Box + 'b> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator + 'b` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/generate.rs:78:112 [INFO] [stderr] | [INFO] [stderr] 78 | fn from_word_vec_partial<'b>(&'b self, crossword: Crossword, candidates: Rc>, seed: u64) -> Box>)> + 'b> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator>)> + 'b` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/generate.rs:89:114 [INFO] [stderr] | [INFO] [stderr] 89 | fn from_word_vec_recursive<'b>(&'b self, crossword: Crossword, candidates: Rc>, seed: u64) -> Box + 'b> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator + 'b` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/generate.rs:100:104 [INFO] [stderr] | [INFO] [stderr] 100 | fn from_word_vec<'b>(&'b self, crossword: Crossword, candidates: Rc>, seed: u64) -> Box>)> + 'b> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator>)> + 'b` [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: Could not compile `crossword`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "b4ef8aa41753e0b14a8426ccef29b9b0f1b2961e69c26b03cfb7114afdc29958"` [INFO] running `"docker" "rm" "-f" "b4ef8aa41753e0b14a8426ccef29b9b0f1b2961e69c26b03cfb7114afdc29958"` [INFO] [stdout] b4ef8aa41753e0b14a8426ccef29b9b0f1b2961e69c26b03cfb7114afdc29958