[INFO] fetching crate parsec 0.5.0...
[INFO] extracting crate parsec 0.5.0 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/parsec/0.5.0
[INFO] extracting crate parsec 0.5.0 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/parsec/0.5.0
[INFO] validating manifest of parsec-0.5.0 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of parsec-0.5.0 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing parsec-0.5.0
[INFO] finished frobbing parsec-0.5.0
[INFO] frobbed toml for parsec-0.5.0 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/parsec/0.5.0/Cargo.toml
[INFO] started frobbing parsec-0.5.0
[INFO] finished frobbing parsec-0.5.0
[INFO] frobbed toml for parsec-0.5.0 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/parsec/0.5.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing parsec-0.5.0 against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-3/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/parsec/0.5.0:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] 650f6afe54f5639ffaca9fa261ae8ad2bc425a558882dddcd51dd414410f4115
[INFO] running `"docker" "start" "-a" "650f6afe54f5639ffaca9fa261ae8ad2bc425a558882dddcd51dd414410f4115"`
[INFO] [stderr]    Compiling lazy_static v1.0.2
[INFO] [stderr]    Compiling unwrap v1.1.0
[INFO] [stderr]    Compiling log-mdc v0.1.0
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling url v1.5.1
[INFO] [stderr]    Compiling bincode v0.8.0
[INFO] [stderr]    Compiling chrono v0.3.0
[INFO] [stderr]    Compiling tiny-keccak v1.4.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling config_file_handler v0.9.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.5.1/src/form_urlencoded.rs:251:40
[INFO] [stderr]     |
[INFO] [stderr] 249 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 250 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 251 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling ws v0.7.3
[INFO] [stderr]    Compiling log4rs v0.7.0
[INFO] [stderr]    Compiling maidsafe_utilities v0.15.0
[INFO] [stderr]    Compiling parsec v0.5.0 (/opt/crater/workdir)
[INFO] [stderr] error: lint `private_no_mangle_fns` has been removed: `no longer a warning, #[no_mangle] functions always exported`
[INFO] [stderr]   --> src/lib.rs:24:46
[INFO] [stderr]    |
[INFO] [stderr] 24 |     overflowing_literals, plugin_as_library, private_no_mangle_fns, private_no_mangle_statics,
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/lib.rs:20:90
[INFO] [stderr]    |
[INFO] [stderr] 20 |     exceeding_bitshifts, mutable_transmutes, no_mangle_const_items, unknown_crate_types, warnings
[INFO] [stderr]    |                                                                                          ^^^^^^^^
[INFO] [stderr]    = note: #[forbid(renamed_and_removed_lints)] implied by #[forbid(warnings)]
[INFO] [stderr] 
[INFO] [stderr] error: lint `private_no_mangle_statics` has been removed: `no longer a warning, #[no_mangle] statics always exported`
[INFO] [stderr]   --> src/lib.rs:24:69
[INFO] [stderr]    |
[INFO] [stderr] 24 |     overflowing_literals, plugin_as_library, private_no_mangle_fns, private_no_mangle_statics,
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `parsec`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "650f6afe54f5639ffaca9fa261ae8ad2bc425a558882dddcd51dd414410f4115"`
[INFO] running `"docker" "rm" "-f" "650f6afe54f5639ffaca9fa261ae8ad2bc425a558882dddcd51dd414410f4115"`
[INFO] [stdout] 650f6afe54f5639ffaca9fa261ae8ad2bc425a558882dddcd51dd414410f4115