[INFO] crate peekable_reader 0.0.2 is already in cache
[INFO] extracting crate peekable_reader 0.0.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/peekable_reader/0.0.2
[INFO] extracting crate peekable_reader 0.0.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/peekable_reader/0.0.2
[INFO] validating manifest of peekable_reader-0.0.2 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of peekable_reader-0.0.2 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing peekable_reader-0.0.2
[INFO] finished frobbing peekable_reader-0.0.2
[INFO] frobbed toml for peekable_reader-0.0.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/peekable_reader/0.0.2/Cargo.toml
[INFO] started frobbing peekable_reader-0.0.2
[INFO] finished frobbing peekable_reader-0.0.2
[INFO] frobbed toml for peekable_reader-0.0.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/peekable_reader/0.0.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing peekable_reader-0.0.2 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/peekable_reader/0.0.2:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 5da454101a680bdf64f2674255a5c95eaf78ea6ca4426c633addf458b9b46682
[INFO] running `"docker" "start" "-a" "5da454101a680bdf64f2674255a5c95eaf78ea6ca4426c633addf458b9b46682"`
[INFO] [stderr]    Compiling peekable_reader v0.0.2 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::old_io`
[INFO] [stderr]  --> src/lib.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::old_io::IoResult;
[INFO] [stderr]   |          ^^^^^^ could not find `old_io` in `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Reader` in this scope
[INFO] [stderr]   --> src/lib.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 | impl<R: Reader> PeekableReader<R> {
[INFO] [stderr]    |         ^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Reader` in this scope
[INFO] [stderr]   --> src/lib.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 | impl<R: Reader> Reader for PeekableReader<R> {
[INFO] [stderr]    |                 ^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Reader` in this scope
[INFO] [stderr]   --> src/lib.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 | impl<R: Reader> Reader for PeekableReader<R> {
[INFO] [stderr]    |         ^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0405, E0432.
[INFO] [stderr] For more information about an error, try `rustc --explain E0405`.
[INFO] [stderr] error: Could not compile `peekable_reader`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5da454101a680bdf64f2674255a5c95eaf78ea6ca4426c633addf458b9b46682"`
[INFO] running `"docker" "rm" "-f" "5da454101a680bdf64f2674255a5c95eaf78ea6ca4426c633addf458b9b46682"`
[INFO] [stdout] 5da454101a680bdf64f2674255a5c95eaf78ea6ca4426c633addf458b9b46682