[INFO] crate json_str 0.5.2 is already in cache
[INFO] extracting crate json_str 0.5.2 into work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/json_str/0.5.2
[INFO] extracting crate json_str 0.5.2 into work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/json_str/0.5.2
[INFO] validating manifest of json_str-0.5.2 on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of json_str-0.5.2 on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing json_str-0.5.2
[INFO] finished frobbing json_str-0.5.2
[INFO] frobbed toml for json_str-0.5.2 written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/json_str/0.5.2/Cargo.toml
[INFO] started frobbing json_str-0.5.2
[INFO] finished frobbing json_str-0.5.2
[INFO] frobbed toml for json_str-0.5.2 written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/json_str/0.5.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking json_str-0.5.2 against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-5/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/json_str/0.5.2:/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=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" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c9efeafbbbde74cd374d5613ddcd3193ef220d078b3503ca6c8f412269fdfb6a
[INFO] running `"docker" "start" "-a" "c9efeafbbbde74cd374d5613ddcd3193ef220d078b3503ca6c8f412269fdfb6a"`
[INFO] [stderr]    Compiling json_str v0.5.2 (/opt/crater/workdir)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> benches/mod.rs:1:26
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test, plugin, custom_derive)]
[INFO] [stderr]   |                          ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: subsumed by `#[proc_macro_derive]`
[INFO] [stderr]  --> benches/mod.rs:1:26
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test, plugin, custom_derive)]
[INFO] [stderr]   |                          ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0557`.
[INFO] [stderr] error: Could not compile `json_str`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c9efeafbbbde74cd374d5613ddcd3193ef220d078b3503ca6c8f412269fdfb6a"`
[INFO] running `"docker" "rm" "-f" "c9efeafbbbde74cd374d5613ddcd3193ef220d078b3503ca6c8f412269fdfb6a"`
[INFO] [stdout] c9efeafbbbde74cd374d5613ddcd3193ef220d078b3503ca6c8f412269fdfb6a