[INFO] crate i-o 0.4.4 is already in cache
[INFO] extracting crate i-o 0.4.4 into work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/i-o/0.4.4
[INFO] extracting crate i-o 0.4.4 into work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/i-o/0.4.4
[INFO] validating manifest of i-o-0.4.4 on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of i-o-0.4.4 on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing i-o-0.4.4
[INFO] finished frobbing i-o-0.4.4
[INFO] frobbed toml for i-o-0.4.4 written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/i-o/0.4.4/Cargo.toml
[INFO] started frobbing i-o-0.4.4
[INFO] finished frobbing i-o-0.4.4
[INFO] frobbed toml for i-o-0.4.4 written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/reg/i-o/0.4.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking i-o-0.4.4 against master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-3/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/reg/i-o/0.4.4:/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" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] db7065371dbc83a6652c0cfa076c94655fdc2805c994c324b72edce812bb92e2
[INFO] running `"docker" "start" "-a" "db7065371dbc83a6652c0cfa076c94655fdc2805c994c324b72edce812bb92e2"`
[INFO] [stderr]    Compiling i-o v0.4.4 (/opt/crater/workdir)
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr] warning: use of deprecated item 'core::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/lib.rs:166:40
[INFO] [stderr]     |
[INFO] [stderr] 166 |         let mut buf: [T; 1] = unsafe { mem::uninitialized() };
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]    Compiling quickcheck v0.7.2
[INFO] [stderr]    Compiling quickcheck_macros v0.7.0
[INFO] [stderr] error[E0432]: unresolved import `syntax::ext::base::MultiModifier`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck_macros-0.7.0/src/lib.rs:16:34
[INFO] [stderr]    |
[INFO] [stderr] 16 | use syntax::ext::base::{ExtCtxt, MultiModifier, Annotatable};
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^
[INFO] [stderr]    |                                  |
[INFO] [stderr]    |                                  no `MultiModifier` in `ext::base`
[INFO] [stderr]    |                                  help: a similar name exists in the module: `MultiItemModifier`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `quickcheck_macros`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "db7065371dbc83a6652c0cfa076c94655fdc2805c994c324b72edce812bb92e2"`
[INFO] running `"docker" "rm" "-f" "db7065371dbc83a6652c0cfa076c94655fdc2805c994c324b72edce812bb92e2"`
[INFO] [stdout] db7065371dbc83a6652c0cfa076c94655fdc2805c994c324b72edce812bb92e2