[INFO] updating cached repository vitiral/replace.rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/vitiral/replace.rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/vitiral/replace.rs" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/vitiral/replace.rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/vitiral/replace.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/vitiral/replace.rs" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/vitiral/replace.rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/vitiral/replace.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 246ff7c9b8b91c5d81d8ee41d25d42020e731f03
[INFO] sha for GitHub repo vitiral/replace.rs: 246ff7c9b8b91c5d81d8ee41d25d42020e731f03
[INFO] validating manifest of vitiral/replace.rs on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of vitiral/replace.rs on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing vitiral/replace.rs
[INFO] finished frobbing vitiral/replace.rs
[INFO] frobbed toml for vitiral/replace.rs written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/vitiral/replace.rs/Cargo.toml
[INFO] started frobbing vitiral/replace.rs
[INFO] finished frobbing vitiral/replace.rs
[INFO] frobbed toml for vitiral/replace.rs written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/vitiral/replace.rs/Cargo.toml
[INFO] crate vitiral/replace.rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking vitiral/replace.rs against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-0/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/vitiral/replace.rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a5ab7b804868d035f8251287a85fdcfa977755d3bbf903bcfd70afb99f58e01f
[INFO] running `"docker" "start" "-a" "a5ab7b804868d035f8251287a85fdcfa977755d3bbf903bcfd70afb99f58e01f"`
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]     Checking unicode-segmentation v1.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.7
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking thread-id v3.0.0
[INFO] [stderr]     Checking term_size v0.2.2
[INFO] [stderr]     Checking thread_local v0.3.2
[INFO] [stderr]     Checking aho-corasick v0.6.2
[INFO] [stderr]     Checking clap v2.20.3
[INFO] [stderr]     Checking regex v0.2.1
[INFO] [stderr]     Checking backtrace v0.3.0
[INFO] [stderr]     Checking error-chain v0.9.0
[INFO] [stderr]     Checking replace v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/types.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 |   /// Library Error and Result types
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 13 | / error_chain! {
[INFO] [stderr] 14 | |     types {
[INFO] [stderr] 15 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] 16 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 37 | |     }
[INFO] [stderr] 38 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/types.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 |   /// Library Error and Result types
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 13 | / error_chain! {
[INFO] [stderr] 14 | |     types {
[INFO] [stderr] 15 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] 16 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 37 | |     }
[INFO] [stderr] 38 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/main.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/types.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | / error_chain! {
[INFO] [stderr] 14 | |     types {
[INFO] [stderr] 15 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] 16 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 37 | |     }
[INFO] [stderr] 38 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/types.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | / error_chain! {
[INFO] [stderr] 14 | |     types {
[INFO] [stderr] 15 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] 16 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 37 | |     }
[INFO] [stderr] 38 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `g`
[INFO] [stderr]   --> src/replace.rs:86:32
[INFO] [stderr]    |
[INFO] [stderr] 86 |             &Groups::Named(ref g) => panic!(),
[INFO] [stderr]    |                                ^ help: consider prefixing with an underscore: `_g`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/types.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | / error_chain! {
[INFO] [stderr] 14 | |     types {
[INFO] [stderr] 15 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] 16 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 37 | |     }
[INFO] [stderr] 38 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/types.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | / error_chain! {
[INFO] [stderr] 14 | |     types {
[INFO] [stderr] 15 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] 16 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 37 | |     }
[INFO] [stderr] 38 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `g`
[INFO] [stderr]   --> src/replace.rs:86:32
[INFO] [stderr]    |
[INFO] [stderr] 86 |             &Groups::Named(ref g) => panic!(),
[INFO] [stderr]    |                                ^ help: consider prefixing with an underscore: `_g`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `do_replace`
[INFO] [stderr]    --> src/replace.rs:106:1
[INFO] [stderr]     |
[INFO] [stderr] 106 | fn do_replace(c: &Cmd, d: &[u8]) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Named`
[INFO] [stderr]   --> src/types.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     Named(NamedGroups<'a>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Named`
[INFO] [stderr]   --> src/types.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     Named(NamedGroups<'a>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.23s
[INFO] running `"docker" "inspect" "a5ab7b804868d035f8251287a85fdcfa977755d3bbf903bcfd70afb99f58e01f"`
[INFO] running `"docker" "rm" "-f" "a5ab7b804868d035f8251287a85fdcfa977755d3bbf903bcfd70afb99f58e01f"`
[INFO] [stdout] a5ab7b804868d035f8251287a85fdcfa977755d3bbf903bcfd70afb99f58e01f