[INFO] updating cached repository ubsan/z80
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ubsan/z80
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ubsan/z80" "work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/ubsan/z80"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/ubsan/z80'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ubsan/z80" "work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/ubsan/z80"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/ubsan/z80'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6feaeac2aaae11e9353caf6688cc993cd3568fee
[INFO] sha for GitHub repo ubsan/z80: 6feaeac2aaae11e9353caf6688cc993cd3568fee
[INFO] validating manifest of ubsan/z80 on toolchain master#f66e4697ae286985ddefc53c3a047614568458bb
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ubsan/z80 on toolchain try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ubsan/z80
[INFO] finished frobbing ubsan/z80
[INFO] frobbed toml for ubsan/z80 written to work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/ubsan/z80/Cargo.toml
[INFO] started frobbing ubsan/z80
[INFO] finished frobbing ubsan/z80
[INFO] frobbed toml for ubsan/z80 written to work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/ubsan/z80/Cargo.toml
[INFO] crate ubsan/z80 has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ubsan/z80 against master#f66e4697ae286985ddefc53c3a047614568458bb for pr-58592
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58592/worker-4/master#f66e4697ae286985ddefc53c3a047614568458bb:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/ubsan/z80:/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=forbid" "-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" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 62f3e3406e1b8394bba4c7db78b4a14851c018c5b70300c50a3eea07dbe3d10a
[INFO] running `"docker" "start" "-a" "62f3e3406e1b8394bba4c7db78b4a14851c018c5b70300c50a3eea07dbe3d10a"`
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking clap v2.23.3
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking retro v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/chip/mod.rs:58:33
[INFO] [stderr]    |
[INFO] [stderr] 58 |         (res, false, false, res.count_ones() % 2 == 0)
[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 `wrapping::Extensions::count_ones(...)` to keep using the current method
[INFO] [stderr]    = help: add #![feature(wrapping_int_impl)] to the crate attributes to enable `core::num::wrapping::<impl std::num::Wrapping<u8>>::count_ones`
[INFO] [stderr] 
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/chip/mod.rs:62:33
[INFO] [stderr]    |
[INFO] [stderr] 62 |         (res, false, false, res.count_ones() % 2 == 0)
[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 `wrapping::Extensions::count_ones(...)` to keep using the current method
[INFO] [stderr]    = help: add #![feature(wrapping_int_impl)] to the crate attributes to enable `core::num::wrapping::<impl std::num::Wrapping<u8>>::count_ones`
[INFO] [stderr] 
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/chip/mod.rs:66:33
[INFO] [stderr]    |
[INFO] [stderr] 66 |         (res, false, false, res.count_ones() % 2 == 0)
[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 `wrapping::Extensions::count_ones(...)` to keep using the current method
[INFO] [stderr]    = help: add #![feature(wrapping_int_impl)] to the crate attributes to enable `core::num::wrapping::<impl std::num::Wrapping<u8>>::count_ones`
[INFO] [stderr] 
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/chip/mod.rs:58:33
[INFO] [stderr]    |
[INFO] [stderr] 58 |         (res, false, false, res.count_ones() % 2 == 0)
[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 `wrapping::Extensions::count_ones(...)` to keep using the current method
[INFO] [stderr]    = help: add #![feature(wrapping_int_impl)] to the crate attributes to enable `core::num::wrapping::<impl std::num::Wrapping<u8>>::count_ones`
[INFO] [stderr] 
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/chip/mod.rs:62:33
[INFO] [stderr]    |
[INFO] [stderr] 62 |         (res, false, false, res.count_ones() % 2 == 0)
[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 `wrapping::Extensions::count_ones(...)` to keep using the current method
[INFO] [stderr]    = help: add #![feature(wrapping_int_impl)] to the crate attributes to enable `core::num::wrapping::<impl std::num::Wrapping<u8>>::count_ones`
[INFO] [stderr] 
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/chip/mod.rs:66:33
[INFO] [stderr]    |
[INFO] [stderr] 66 |         (res, false, false, res.count_ones() % 2 == 0)
[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 `wrapping::Extensions::count_ones(...)` to keep using the current method
[INFO] [stderr]    = help: add #![feature(wrapping_int_impl)] to the crate attributes to enable `core::num::wrapping::<impl std::num::Wrapping<u8>>::count_ones`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.44s
[INFO] running `"docker" "inspect" "62f3e3406e1b8394bba4c7db78b4a14851c018c5b70300c50a3eea07dbe3d10a"`
[INFO] running `"docker" "rm" "-f" "62f3e3406e1b8394bba4c7db78b4a14851c018c5b70300c50a3eea07dbe3d10a"`
[INFO] [stdout] 62f3e3406e1b8394bba4c7db78b4a14851c018c5b70300c50a3eea07dbe3d10a