[INFO] crate data-buffer 0.4.3 is already in cache
[INFO] extracting crate data-buffer 0.4.3 into work/ex/beta-1.34-1/sources/beta-2019-02-23/reg/data-buffer/0.4.3
[INFO] extracting crate data-buffer 0.4.3 into work/ex/beta-1.34-1/sources/beta-2019-02-27/reg/data-buffer/0.4.3
[INFO] validating manifest of data-buffer-0.4.3 on toolchain beta-2019-02-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-02-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of data-buffer-0.4.3 on toolchain beta-2019-02-27
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-02-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing data-buffer-0.4.3
[INFO] finished frobbing data-buffer-0.4.3
[INFO] frobbed toml for data-buffer-0.4.3 written to work/ex/beta-1.34-1/sources/beta-2019-02-23/reg/data-buffer/0.4.3/Cargo.toml
[INFO] started frobbing data-buffer-0.4.3
[INFO] finished frobbing data-buffer-0.4.3
[INFO] frobbed toml for data-buffer-0.4.3 written to work/ex/beta-1.34-1/sources/beta-2019-02-27/reg/data-buffer/0.4.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-02-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-02-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-02-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-02-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing data-buffer-0.4.3 against beta-2019-02-27 for beta-1.34-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.34-1/worker-2/beta-2019-02-27:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.34-1/sources/beta-2019-02-27/reg/data-buffer/0.4.3:/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-2019-02-27" "build" "--frozen"`
[INFO] [stdout] 7999edb3a49fe0046ba3834ec030459ddd335a1dbbcc0e217ba51e30bfce787f
[INFO] running `"docker" "start" "-a" "7999edb3a49fe0046ba3834ec030459ddd335a1dbbcc0e217ba51e30bfce787f"`
[INFO] [stderr]    Compiling data-buffer v0.4.3 (/opt/crater/workdir)
[INFO] [stderr] error[E0495]: cannot infer an appropriate lifetime due to conflicting requirements
[INFO] [stderr]    --> src/lib.rs:214:38
[INFO] [stderr]     |
[INFO] [stderr] 214 |         if TypeId::of::<T>() != self.type_id() { None } else { Some(self) }
[INFO] [stderr]     |                                      ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: first, the lifetime cannot outlive the anonymous lifetime #1 defined on the method body at 213:5...
[INFO] [stderr]    --> src/lib.rs:213:5
[INFO] [stderr]     |
[INFO] [stderr] 213 | /     pub fn check_mut<T: Any>(&mut self) -> Option<&mut Self> {
[INFO] [stderr] 214 | |         if TypeId::of::<T>() != self.type_id() { None } else { Some(self) }
[INFO] [stderr] 215 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     = note: ...so that the types are compatible:
[INFO] [stderr]             expected &&mut DataBuffer
[INFO] [stderr]                found &&mut DataBuffer
[INFO] [stderr]     = note: but, the lifetime must be valid for the static lifetime...
[INFO] [stderr] note: ...so that the type `&mut DataBuffer` will meet its required lifetime bounds
[INFO] [stderr]    --> src/lib.rs:214:38
[INFO] [stderr]     |
[INFO] [stderr] 214 |         if TypeId::of::<T>() != self.type_id() { None } else { Some(self) }
[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 E0495`.
[INFO] [stderr] error: Could not compile `data-buffer`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7999edb3a49fe0046ba3834ec030459ddd335a1dbbcc0e217ba51e30bfce787f"`
[INFO] running `"docker" "rm" "-f" "7999edb3a49fe0046ba3834ec030459ddd335a1dbbcc0e217ba51e30bfce787f"`
[INFO] [stdout] 7999edb3a49fe0046ba3834ec030459ddd335a1dbbcc0e217ba51e30bfce787f