[INFO] fetching crate tamasfe-clap 3.0.0-beta.2...
[INFO] testing tamasfe-clap-3.0.0-beta.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate tamasfe-clap 3.0.0-beta.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate tamasfe-clap 3.0.0-beta.2
[INFO] finished tweaking crates.io crate tamasfe-clap 3.0.0-beta.2
[INFO] tweaked toml for crates.io crate tamasfe-clap 3.0.0-beta.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tamasfe-clap 3.0.0-beta.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tamasfe-clap 3.0.0-beta.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indexmap v1.6.0
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.0
[INFO] [stderr]   Downloaded toml v0.5.7
[INFO] [stderr]   Downloaded clap_derive v3.0.0-beta.2
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de88e1823efbb3669f865e9767802a763ed9e1c4718b152d275776be8e809b3e
[INFO] running `Command { std: "docker" "start" "-a" "de88e1823efbb3669f865e9767802a763ed9e1c4718b152d275776be8e809b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de88e1823efbb3669f865e9767802a763ed9e1c4718b152d275776be8e809b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de88e1823efbb3669f865e9767802a763ed9e1c4718b152d275776be8e809b3e", kill_on_drop: false }`
[INFO] [stdout] de88e1823efbb3669f865e9767802a763ed9e1c4718b152d275776be8e809b3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6660e5461e5f2934ae7b102758b96af11c8251eb3ed832b7759233198f00fff3
[INFO] running `Command { std: "docker" "start" "-a" "6660e5461e5f2934ae7b102758b96af11c8251eb3ed832b7759233198f00fff3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling os_str_bytes v2.4.0
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling textwrap v0.12.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]    Compiling tamasfe-clap v3.0.0-beta.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `features`
[INFO] [stdout]   --> src/parse/features/suggestions.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 | #[cfg(all(test, features = "suggestions"))]
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] help: there is a config with a similar name and value
[INFO] [stdout]    |
[INFO] [stdout] 74 - #[cfg(all(test, features = "suggestions"))]
[INFO] [stdout] 74 + #[cfg(all(test, feature = "suggestions"))]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/parse/matches/arg_matches.rs:997:10
[INFO] [stdout]     |
[INFO] [stdout] 997 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/parse/matches/arg_matches.rs:1057:10
[INFO] [stdout]      |
[INFO] [stdout] 1057 |         };
[INFO] [stdout]      |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/build/app/mod.rs:2342:21
[INFO] [stdout]      |
[INFO] [stdout] 2342 |                 let mut sc = self
[INFO] [stdout]      |                     ----^^
[INFO] [stdout]      |                     |
[INFO] [stdout]      |                     help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/build/app/mod.rs:2434:21
[INFO] [stdout]      |
[INFO] [stdout] 2434 |             for (i, mut sc) in &mut self
[INFO] [stdout]      |                     ----^^
[INFO] [stdout]      |                     |
[INFO] [stdout]      |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/build/app/mod.rs:2453:13
[INFO] [stdout]      |
[INFO] [stdout] 2453 |         for mut sc in &mut self.subcommands {
[INFO] [stdout]      |             ----^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/build/app/mod.rs:2260:24
[INFO] [stdout]      |
[INFO] [stdout] 2260 |   ...   panic!(format!(
[INFO] [stdout]      |  ______________^
[INFO] [stdout] 2261 | | ...       "AppSettings::HelpRequired is enabled for the App {}, but at least one of its arguments does not have either `help` or...
[INFO] [stdout] 2262 | | ...       self.name,
[INFO] [stdout] 2263 | | ...       args_missing_help.join(", ")
[INFO] [stdout] 2264 | | ...   ));
[INFO] [stdout]      | |_______^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]      = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]      = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 2260 ~                 panic!(
[INFO] [stdout] 2261 |                     "AppSettings::HelpRequired is enabled for the App {}, but at least one of its arguments does not have either `help` or `long_help` set. List of such arguments: {}",
[INFO] [stdout] 2262 |                     self.name,
[INFO] [stdout] 2263 |                     args_missing_help.join(", ")
[INFO] [stdout] 2264 ~                 );
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/build/app/mod.rs:2283:25
[INFO] [stdout]      |
[INFO] [stdout] 2283 |     fn two_groups_of<F>(&self, condition: F) -> Option<(&ArgGroup, &ArgGroup)>
[INFO] [stdout]      |                         ^^^^^                           ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]      |                         |                               ||         ||
[INFO] [stdout]      |                         |                               ||         |the same lifetime is hidden here
[INFO] [stdout]      |                         |                               ||         the same lifetime is elided here
[INFO] [stdout]      |                         |                               |the same lifetime is hidden here
[INFO] [stdout]      |                         |                               the same lifetime is elided here
[INFO] [stdout]      |                         the lifetime is elided here
[INFO] [stdout]      |
[INFO] [stdout]      = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]      = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]      |
[INFO] [stdout] 2283 |     fn two_groups_of<F>(&self, condition: F) -> Option<(&ArgGroup<'_>, &ArgGroup<'_>)>
[INFO] [stdout]      |                                                                  ++++           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/build/arg/mod.rs:4340:36
[INFO] [stdout]      |
[INFO] [stdout] 4340 |     pub(crate) fn name_no_brackets(&self) -> Cow<str> {
[INFO] [stdout]      |                                    ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]      |                                    |
[INFO] [stdout]      |                                    the lifetime is elided here
[INFO] [stdout]      |
[INFO] [stdout]      = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]      |
[INFO] [stdout] 4340 |     pub(crate) fn name_no_brackets(&self) -> Cow<'_, str> {
[INFO] [stdout]      |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]     --> src/build/arg/mod.rs:4391:32
[INFO] [stdout]      |
[INFO] [stdout] 4391 |                     "Argument '{}' uses hint CommandWithArguments and must accept multiple values",
[INFO] [stdout]      |                                ^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]      |
[INFO] [stdout] 4391 |                     "Argument '{}' uses hint CommandWithArguments and must accept multiple values", ...,
[INFO] [stdout]      |                                                                                                   +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]      |
[INFO] [stdout] 4391 |                     "{}", "Argument '{}' uses hint CommandWithArguments and must accept multiple values",
[INFO] [stdout]      |                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parse/arg_matcher.rs:101:29
[INFO] [stdout]     |
[INFO] [stdout] 101 |     pub(crate) fn arg_names(&self) -> indexmap::map::Keys<Id, MatchedArg> {
[INFO] [stdout]     |                             ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 101 |     pub(crate) fn arg_names(&self) -> indexmap::map::Keys<'_, Id, MatchedArg> {
[INFO] [stdout]     |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parse/arg_matcher.rs:105:25
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub(crate) fn entry(&mut self, arg: &Id) -> indexmap::map::Entry<Id, MatchedArg> {
[INFO] [stdout]     |                         ^^^^^^^^^               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub(crate) fn entry(&mut self, arg: &Id) -> indexmap::map::Entry<'_, Id, MatchedArg> {
[INFO] [stdout]     |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parse/arg_matcher.rs:117:24
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub(crate) fn iter(&self) -> indexmap::map::Iter<Id, MatchedArg> {
[INFO] [stdout]     |                        ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 117 |     pub(crate) fn iter(&self) -> indexmap::map::Iter<'_, Id, MatchedArg> {
[INFO] [stdout]     |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/parse/matches/arg_matches.rs:217:30
[INFO] [stdout]     |
[INFO] [stdout] 217 |     pub fn values_of<T: Key>(&self, id: T) -> Option<Values> {
[INFO] [stdout]     |                              ^^^^^                   ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 217 |     pub fn values_of<T: Key>(&self, id: T) -> Option<Values<'_>> {
[INFO] [stdout]     |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/parse/validator.rs:248:16
[INFO] [stdout]     |
[INFO] [stdout] 248 |         panic!(INTERNAL_ERROR_MSG);
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 248 |         panic!("{}", INTERNAL_ERROR_MSG);
[INFO] [stdout]     |                +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/util/argstr.rs:46:33
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub(crate) fn split_at_byte(&self, byte: u8) -> (ArgStr, ArgStr) {
[INFO] [stdout]    |                                 ^^^^^                ^^^^^^  ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                 |                    |
[INFO] [stdout]    |                                 |                    the same lifetime is hidden here
[INFO] [stdout]    |                                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub(crate) fn split_at_byte(&self, byte: u8) -> (ArgStr<'_>, ArgStr<'_>) {
[INFO] [stdout]    |                                                            ++++        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/util/argstr.rs:57:61
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub(crate) fn trim_start_matches(&'a self, byte: u8) -> ArgStr {
[INFO] [stdout]    |                                       --                    ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub(crate) fn trim_start_matches(&'a self, byte: u8) -> ArgStr<'a> {
[INFO] [stdout]    |                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/util/argstr.rs:76:40
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub(crate) fn trim_start_n_matches(&self, n: usize, ch: u8) -> ArgStr {
[INFO] [stdout]    |                                        ^^^^^                       ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub(crate) fn trim_start_n_matches(&self, n: usize, ch: u8) -> ArgStr<'_> {
[INFO] [stdout]    |                                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/util/argstr.rs:84:62
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub(crate) fn split_at_unchecked(&'a self, i: usize) -> (ArgStr, ArgStr) {
[INFO] [stdout]    |                                       --                     ^^^^^^  ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                       |                      |
[INFO] [stdout]    |                                       |                      the same lifetime is hidden here
[INFO] [stdout]    |                                       the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub(crate) fn split_at_unchecked(&'a self, i: usize) -> (ArgStr<'a>, ArgStr<'a>) {
[INFO] [stdout]    |                                                                    ++++        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.67s
[INFO] running `Command { std: "docker" "inspect" "6660e5461e5f2934ae7b102758b96af11c8251eb3ed832b7759233198f00fff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6660e5461e5f2934ae7b102758b96af11c8251eb3ed832b7759233198f00fff3", kill_on_drop: false }`
[INFO] [stdout] 6660e5461e5f2934ae7b102758b96af11c8251eb3ed832b7759233198f00fff3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be87fb6a0aeca3b31b96f121c694a4ebeca9ad99da51e4b4d2945afe8286615a
[INFO] running `Command { std: "docker" "start" "-a" "be87fb6a0aeca3b31b96f121c694a4ebeca9ad99da51e4b4d2945afe8286615a", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling tinyvec v0.3.4
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stdout] error[E0422]: cannot find struct, variant or union type `LineColumn` in crate `proc_macro`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-0.4.30/src/wrapper.rs:484:33
[INFO] [stdout]     |
[INFO] [stdout] 484 |                 let proc_macro::LineColumn { line, column } = s.start();
[INFO] [stdout]     |                                 ^^^^^^^^^^ not found in `proc_macro`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]     |
[INFO] [stdout]   1 + use LineColumn;
[INFO] [stdout]     |
[INFO] [stdout]   1 + use fallback::LineColumn;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `LineColumn`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 484 -                 let proc_macro::LineColumn { line, column } = s.start();
[INFO] [stdout] 484 +                 let LineColumn { line, column } = s.start();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0422]: cannot find struct, variant or union type `LineColumn` in crate `proc_macro`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-0.4.30/src/wrapper.rs:501:33
[INFO] [stdout]     |
[INFO] [stdout] 501 |                 let proc_macro::LineColumn { line, column } = s.end();
[INFO] [stdout]     |                                 ^^^^^^^^^^ not found in `proc_macro`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]     |
[INFO] [stdout]   1 + use LineColumn;
[INFO] [stdout]     |
[INFO] [stdout]   1 + use fallback::LineColumn;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `LineColumn`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 501 -                 let proc_macro::LineColumn { line, column } = s.end();
[INFO] [stdout] 501 +                 let LineColumn { line, column } = s.end();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pulldown-cmark v0.4.1
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stdout] For more information about this error, try `rustc --explain E0422`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "be87fb6a0aeca3b31b96f121c694a4ebeca9ad99da51e4b4d2945afe8286615a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be87fb6a0aeca3b31b96f121c694a4ebeca9ad99da51e4b4d2945afe8286615a", kill_on_drop: false }`
[INFO] [stdout] be87fb6a0aeca3b31b96f121c694a4ebeca9ad99da51e4b4d2945afe8286615a
