[INFO] cloning repository https://github.com/dylanbraithwaite/toy-compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dylanbraithwaite/toy-compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdylanbraithwaite%2Ftoy-compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdylanbraithwaite%2Ftoy-compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] be773e013b232d1347a815af90826960c7340e8a
[INFO] checking dylanbraithwaite/toy-compiler against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdylanbraithwaite%2Ftoy-compiler" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dylanbraithwaite/toy-compiler on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dylanbraithwaite/toy-compiler
[INFO] finished tweaking git repo https://github.com/dylanbraithwaite/toy-compiler
[INFO] tweaked toml for git repo https://github.com/dylanbraithwaite/toy-compiler written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/dylanbraithwaite/toy-compiler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: path `/workspace/builds/worker-0/source/src/compiler.rs` was erroneously implicitly accepted for binary `compiler`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex_macros v0.1.17
[INFO] [stderr]   Downloaded regex v0.1.30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f22c952481f5f21cd745dde853cffa268f80ef3b810a6dc1a53f316010ef85e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8f22c952481f5f21cd745dde853cffa268f80ef3b810a6dc1a53f316010ef85e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f22c952481f5f21cd745dde853cffa268f80ef3b810a6dc1a53f316010ef85e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f22c952481f5f21cd745dde853cffa268f80ef3b810a6dc1a53f316010ef85e", kill_on_drop: false }`
[INFO] [stdout] 8f22c952481f5f21cd745dde853cffa268f80ef3b810a6dc1a53f316010ef85e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a54eb5a32b12fc890a9ec5e4e920d237cff1b8a6dd00c67f2d19c4089a42012
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1a54eb5a32b12fc890a9ec5e4e920d237cff1b8a6dd00c67f2d19c4089a42012", kill_on_drop: false }`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/compiler.rs` was erroneously implicitly accepted for binary `compiler`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]    Compiling regex v0.1.30
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:16:25
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::str::pattern::{Pattern, Searcher, SearchStep};
[INFO] [stdout]    |                         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]    = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:16:34
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::str::pattern::{Pattern, Searcher, SearchStep};
[INFO] [stdout]    |                                  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]    = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:16:44
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::str::pattern::{Pattern, Searcher, SearchStep};
[INFO] [stdout]    |                                            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]    = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:987:5
[INFO] [stdout]     |
[INFO] [stdout] 987 |     type Searcher = RegexSearcher<'r, 't>;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]     = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:989:5
[INFO] [stdout]     |
[INFO] [stdout] 989 | /     fn into_searcher(self, haystack: &'t str) -> RegexSearcher<'r, 't> {
[INFO] [stdout] 990 | |         RegexSearcher {
[INFO] [stdout] 991 | |             it: self.find_iter(haystack),
[INFO] [stdout] 992 | |             last_step_end: 0,
[INFO] [stdout] 993 | |             next_match: None,
[INFO] [stdout] 994 | |         }
[INFO] [stdout] 995 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]     = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:986:14
[INFO] [stdout]     |
[INFO] [stdout] 986 | impl<'r, 't> Pattern<'t> for &'r Regex {
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]     = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1001:5
[INFO] [stdout]      |
[INFO] [stdout] 1001 | /     fn haystack(&self) -> &'t str {
[INFO] [stdout] 1002 | |         self.it.search
[INFO] [stdout] 1003 | |     }
[INFO] [stdout]      | |_____^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1006:5
[INFO] [stdout]      |
[INFO] [stdout] 1006 | /     fn next(&mut self) -> SearchStep {
[INFO] [stdout] 1007 | |         if let Some((s, e)) = self.next_match {
[INFO] [stdout] 1008 | |             self.next_match = None;
[INFO] [stdout] 1009 | |             self.last_step_end = e;
[INFO] [stdout] ...    |
[INFO] [stdout] 1033 | |         }
[INFO] [stdout] 1034 | |     }
[INFO] [stdout]      | |_____^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:999:21
[INFO] [stdout]     |
[INFO] [stdout] 999 | unsafe impl<'r, 't> Searcher<'t> for RegexSearcher<'r, 't> {
[INFO] [stdout]     |                     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]     = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1006:27
[INFO] [stdout]      |
[INFO] [stdout] 1006 |     fn next(&mut self) -> SearchStep {
[INFO] [stdout]      |                           ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1010:20
[INFO] [stdout]      |
[INFO] [stdout] 1010 |             return SearchStep::Match(s, e);
[INFO] [stdout]      |                    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1017:21
[INFO] [stdout]      |
[INFO] [stdout] 1017 |                     SearchStep::Reject(last, self.haystack().len())
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1019:21
[INFO] [stdout]      |
[INFO] [stdout] 1019 |                     SearchStep::Done
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1025:21
[INFO] [stdout]      |
[INFO] [stdout] 1025 |                     SearchStep::Match(s, e)
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:16:25
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::str::pattern::{Pattern, Searcher, SearchStep};
[INFO] [stdout]    |                         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]    = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1030:21
[INFO] [stdout]      |
[INFO] [stdout] 1030 |                     SearchStep::Reject(last, s)
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:16:34
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::str::pattern::{Pattern, Searcher, SearchStep};
[INFO] [stdout]    |                                  ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]    = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:16:44
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::str::pattern::{Pattern, Searcher, SearchStep};
[INFO] [stdout]    |                                            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]    = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:987:5
[INFO] [stdout]     |
[INFO] [stdout] 987 |     type Searcher = RegexSearcher<'r, 't>;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]     = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:989:5
[INFO] [stdout]     |
[INFO] [stdout] 989 | /     fn into_searcher(self, haystack: &'t str) -> RegexSearcher<'r, 't> {
[INFO] [stdout] 990 | |         RegexSearcher {
[INFO] [stdout] 991 | |             it: self.find_iter(haystack),
[INFO] [stdout] 992 | |             last_step_end: 0,
[INFO] [stdout] 993 | |             next_match: None,
[INFO] [stdout] 994 | |         }
[INFO] [stdout] 995 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]     = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:986:14
[INFO] [stdout]     |
[INFO] [stdout] 986 | impl<'r, 't> Pattern<'t> for &'r Regex {
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]     = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1001:5
[INFO] [stdout]      |
[INFO] [stdout] 1001 | /     fn haystack(&self) -> &'t str {
[INFO] [stdout] 1002 | |         self.it.search
[INFO] [stdout] 1003 | |     }
[INFO] [stdout]      | |_____^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1006:5
[INFO] [stdout]      |
[INFO] [stdout] 1006 | /     fn next(&mut self) -> SearchStep {
[INFO] [stdout] 1007 | |         if let Some((s, e)) = self.next_match {
[INFO] [stdout] 1008 | |             self.next_match = None;
[INFO] [stdout] 1009 | |             self.last_step_end = e;
[INFO] [stdout] ...    |
[INFO] [stdout] 1033 | |         }
[INFO] [stdout] 1034 | |     }
[INFO] [stdout]      | |_____^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:999:21
[INFO] [stdout]     |
[INFO] [stdout] 999 | unsafe impl<'r, 't> Searcher<'t> for RegexSearcher<'r, 't> {
[INFO] [stdout]     |                     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]     = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1006:27
[INFO] [stdout]      |
[INFO] [stdout] 1006 |     fn next(&mut self) -> SearchStep {
[INFO] [stdout]      |                           ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1010:20
[INFO] [stdout]      |
[INFO] [stdout] 1010 |             return SearchStep::Match(s, e);
[INFO] [stdout]      |                    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1017:21
[INFO] [stdout]      |
[INFO] [stdout] 1017 |                     SearchStep::Reject(last, self.haystack().len())
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1019:21
[INFO] [stdout]      |
[INFO] [stdout] 1019 |                     SearchStep::Done
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1025:21
[INFO] [stdout]      |
[INFO] [stdout] 1025 |                     SearchStep::Match(s, e)
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1030:21
[INFO] [stdout]      |
[INFO] [stdout] 1030 |                     SearchStep::Reject(last, s)
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1014:46
[INFO] [stdout]      |
[INFO] [stdout] 1014 |                 if self.last_step_end < self.haystack().len() {
[INFO] [stdout]      |                                              ^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1016:47
[INFO] [stdout]      |
[INFO] [stdout] 1016 |                     self.last_step_end = self.haystack().len();
[INFO] [stdout]      |                                               ^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1017:51
[INFO] [stdout]      |
[INFO] [stdout] 1017 |                     SearchStep::Reject(last, self.haystack().len())
[INFO] [stdout]      |                                                   ^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1014:46
[INFO] [stdout]      |
[INFO] [stdout] 1014 |                 if self.last_step_end < self.haystack().len() {
[INFO] [stdout]      |                                              ^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1016:47
[INFO] [stdout]      |
[INFO] [stdout] 1016 |                     self.last_step_end = self.haystack().len();
[INFO] [stdout]      |                                               ^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'pattern': API not fully fleshed out and ready to be stabilized
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-0.1.30/src/re.rs:1017:51
[INFO] [stdout]      |
[INFO] [stdout] 1017 |                     SearchStep::Reject(last, self.haystack().len())
[INFO] [stdout]      |                                                   ^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #27721 <https://github.com/rust-lang/rust/issues/27721> for more information
[INFO] [stdout]      = help: add `#![feature(pattern)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 18 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 18 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1a54eb5a32b12fc890a9ec5e4e920d237cff1b8a6dd00c67f2d19c4089a42012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a54eb5a32b12fc890a9ec5e4e920d237cff1b8a6dd00c67f2d19c4089a42012", kill_on_drop: false }`
[INFO] [stdout] 1a54eb5a32b12fc890a9ec5e4e920d237cff1b8a6dd00c67f2d19c4089a42012