Dec 18 10:32:27.253 INFO checking tangle-0.4.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 10:32:27.254 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/tangle/0.4.0:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 10:32:27.791 INFO [stdout] b34c11c98e1e1296f9d6041850e94f5a8ade6a1d0d57102c10f8f807ac9bbba4
Dec 18 10:32:27.794 INFO running `"docker" "start" "-a" "b34c11c98e1e1296f9d6041850e94f5a8ade6a1d0d57102c10f8f807ac9bbba4"`
Dec 18 10:32:29.508 INFO [stderr]     Checking tangle v0.4.0 (/opt/crater/workdir)
Dec 18 10:32:29.896 INFO [stderr] warning: unused import: `std::thread`
Dec 18 10:32:29.896 INFO [stderr]  --> src/lib.rs:7:5
Dec 18 10:32:29.896 INFO [stderr]   |
Dec 18 10:32:29.896 INFO [stderr] 7 | use std::thread;
Dec 18 10:32:29.896 INFO [stderr]   |     ^^^^^^^^^^^
Dec 18 10:32:29.896 INFO [stderr]   |
Dec 18 10:32:29.896 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 10:32:29.896 INFO [stderr] 
Dec 18 10:32:29.896 INFO [stderr] warning: unused import: `std::convert`
Dec 18 10:32:29.896 INFO [stderr]   --> src/lib.rs:10:5
Dec 18 10:32:29.896 INFO [stderr]    |
Dec 18 10:32:29.896 INFO [stderr] 10 | use std::convert;
Dec 18 10:32:29.896 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 18 10:32:29.896 INFO [stderr] 
Dec 18 10:32:29.908 INFO [stderr] error: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions.
Dec 18 10:32:29.908 INFO [stderr]    --> src/lib.rs:178:9
Dec 18 10:32:29.908 INFO [stderr]     |
Dec 18 10:32:29.908 INFO [stderr] 178 | impl<T, E=()> Future<T, E>
Dec 18 10:32:29.908 INFO [stderr]     |         ^
Dec 18 10:32:29.908 INFO [stderr]     |
Dec 18 10:32:29.908 INFO [stderr]     = note: #[deny(invalid_type_param_default)] on by default
Dec 18 10:32:29.908 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 18 10:32:29.908 INFO [stderr]     = note: for more information, see issue #36887 <https://github.com/rust-lang/rust/issues/36887>
Dec 18 10:32:29.908 INFO [stderr] 
Dec 18 10:32:29.916 INFO [stderr] error: aborting due to previous error
Dec 18 10:32:29.916 INFO [stderr] 
Dec 18 10:32:29.927 INFO [stderr] error: Could not compile `tangle`.
Dec 18 10:32:29.927 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 18 10:32:29.938 INFO [stderr] warning: unused import: `std::thread`
Dec 18 10:32:29.938 INFO [stderr]  --> src/lib.rs:7:5
Dec 18 10:32:29.938 INFO [stderr]   |
Dec 18 10:32:29.938 INFO [stderr] 7 | use std::thread;
Dec 18 10:32:29.938 INFO [stderr]   |     ^^^^^^^^^^^
Dec 18 10:32:29.938 INFO [stderr]   |
Dec 18 10:32:29.938 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 10:32:29.938 INFO [stderr] 
Dec 18 10:32:29.938 INFO [stderr] warning: unused import: `std::convert`
Dec 18 10:32:29.938 INFO [stderr]   --> src/lib.rs:10:5
Dec 18 10:32:29.938 INFO [stderr]    |
Dec 18 10:32:29.938 INFO [stderr] 10 | use std::convert;
Dec 18 10:32:29.938 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 18 10:32:29.938 INFO [stderr] 
Dec 18 10:32:29.938 INFO [stderr] warning: unused imports: `Receiver`, `Sender`
Dec 18 10:32:29.938 INFO [stderr]    --> src/lib.rs:368:36
Dec 18 10:32:29.938 INFO [stderr]     |
Dec 18 10:32:29.938 INFO [stderr] 368 |     use std::sync::mpsc::{channel, Receiver, Sender};
Dec 18 10:32:29.938 INFO [stderr]     |                                    ^^^^^^^^  ^^^^^^
Dec 18 10:32:29.938 INFO [stderr] 
Dec 18 10:32:29.940 INFO [stderr] error: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions.
Dec 18 10:32:29.940 INFO [stderr]    --> src/lib.rs:178:9
Dec 18 10:32:29.940 INFO [stderr]     |
Dec 18 10:32:29.940 INFO [stderr] 178 | impl<T, E=()> Future<T, E>
Dec 18 10:32:29.940 INFO [stderr]     |         ^
Dec 18 10:32:29.940 INFO [stderr]     |
Dec 18 10:32:29.940 INFO [stderr]     = note: #[deny(invalid_type_param_default)] on by default
Dec 18 10:32:29.940 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 18 10:32:29.940 INFO [stderr]     = note: for more information, see issue #36887 <https://github.com/rust-lang/rust/issues/36887>
Dec 18 10:32:29.940 INFO [stderr] 
Dec 18 10:32:29.944 INFO [stderr] error: aborting due to previous error
Dec 18 10:32:29.944 INFO [stderr] 
Dec 18 10:32:29.951 INFO [stderr] error: Could not compile `tangle`.
Dec 18 10:32:29.951 INFO [stderr] 
Dec 18 10:32:29.951 INFO [stderr] To learn more, run the command again with --verbose.
Dec 18 10:32:30.628 INFO running `"docker" "inspect" "b34c11c98e1e1296f9d6041850e94f5a8ade6a1d0d57102c10f8f807ac9bbba4"`
Dec 18 10:32:30.932 INFO running `"docker" "rm" "-f" "b34c11c98e1e1296f9d6041850e94f5a8ade6a1d0d57102c10f8f807ac9bbba4"`
Dec 18 10:32:31.188 INFO [stdout] b34c11c98e1e1296f9d6041850e94f5a8ade6a1d0d57102c10f8f807ac9bbba4