[INFO] crate i-o 0.4.4 is already in cache
[INFO] extracting crate i-o 0.4.4 into work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/i-o/0.4.4
[INFO] extracting crate i-o 0.4.4 into work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/i-o/0.4.4
[INFO] validating manifest of i-o-0.4.4 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of i-o-0.4.4 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-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-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/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-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/i-o/0.4.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking i-o-0.4.4 against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-0/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 454f6289f6253fba45e983eb509a8ff7ed027a676d60b5fe5e0fb245b41e0186
[INFO] running `"docker" "start" "-a" "454f6289f6253fba45e983eb509a8ff7ed027a676d60b5fe5e0fb245b41e0186"`
[INFO] [stderr]    Compiling i-o v0.4.4 (/opt/crater/workdir)
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling env_logger v0.5.13
[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" "454f6289f6253fba45e983eb509a8ff7ed027a676d60b5fe5e0fb245b41e0186"`
[INFO] running `"docker" "rm" "-f" "454f6289f6253fba45e983eb509a8ff7ed027a676d60b5fe5e0fb245b41e0186"`
[INFO] [stdout] 454f6289f6253fba45e983eb509a8ff7ed027a676d60b5fe5e0fb245b41e0186