[INFO] crate cowrc 0.0.4 is already in cache
[INFO] extracting crate cowrc 0.0.4 into work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/cowrc/0.0.4
[INFO] extracting crate cowrc 0.0.4 into work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/cowrc/0.0.4
[INFO] validating manifest of cowrc-0.0.4 on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cowrc-0.0.4 on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cowrc-0.0.4
[INFO] finished frobbing cowrc-0.0.4
[INFO] frobbed toml for cowrc-0.0.4 written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/cowrc/0.0.4/Cargo.toml
[INFO] started frobbing cowrc-0.0.4
[INFO] finished frobbing cowrc-0.0.4
[INFO] frobbed toml for cowrc-0.0.4 written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/cowrc/0.0.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cowrc-0.0.4 against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-2/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/cowrc/0.0.4:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 74e63ad783e9c17c28b2c65d5eff61478e23c541f343c7f29c3aa7c5cb3545e9
[INFO] running `"docker" "start" "-a" "74e63ad783e9c17c28b2c65d5eff61478e23c541f343c7f29c3aa7c5cb3545e9"`
[INFO] [stderr]     Checking cowrc v0.0.4 (/opt/crater/workdir)
[INFO] [stderr] error[E0599]: no method named `make_unique` found for type `std::rc::Rc<T>` in the current scope
[INFO] [stderr]   --> src/lib.rs:42:16
[INFO] [stderr]    |
[INFO] [stderr] 42 |         self.v.make_unique()
[INFO] [stderr]    |                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `make_unique` found for type `std::rc::Rc<T>` in the current scope
[INFO] [stderr]   --> src/lib.rs:42:16
[INFO] [stderr]    |
[INFO] [stderr] 42 |         self.v.make_unique()
[INFO] [stderr]    |                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `make_unique` found for type `std::sync::Arc<T>` in the current scope
[INFO] [stderr]   --> src/lib.rs:55:16
[INFO] [stderr]    |
[INFO] [stderr] 55 |         self.v.make_unique()
[INFO] [stderr]    |                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `make_unique` found for type `std::sync::Arc<T>` in the current scope
[INFO] [stderr]   --> src/lib.rs:55:16
[INFO] [stderr]    |
[INFO] [stderr] 55 |         self.v.make_unique()
[INFO] [stderr]    |                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `cowrc`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `cowrc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "74e63ad783e9c17c28b2c65d5eff61478e23c541f343c7f29c3aa7c5cb3545e9"`
[INFO] running `"docker" "rm" "-f" "74e63ad783e9c17c28b2c65d5eff61478e23c541f343c7f29c3aa7c5cb3545e9"`
[INFO] [stdout] 74e63ad783e9c17c28b2c65d5eff61478e23c541f343c7f29c3aa7c5cb3545e9