[INFO] cloning repository https://github.com/Brooooooklyn/rust-err
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Brooooooklyn/rust-err" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrooooooklyn%2Frust-err", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrooooooklyn%2Frust-err'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66a1f1066d5d969af9d12dc944bbfbc17c14fe18
[INFO] testing Brooooooklyn/rust-err against 1.69.0 for beta-1.70-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrooooooklyn%2Frust-err" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Brooooooklyn/rust-err on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Brooooooklyn/rust-err
[INFO] finished tweaking git repo https://github.com/Brooooooklyn/rust-err
[INFO] tweaked toml for git repo https://github.com/Brooooooklyn/rust-err written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Brooooooklyn/rust-err 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" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v0.5.1
[INFO] [stderr]   Downloaded matches v0.1.6
[INFO] [stderr]   Downloaded siphasher v0.2.2
[INFO] [stderr]   Downloaded bitflags v1.0.1
[INFO] [stderr]   Downloaded rand v0.3.22
[INFO] [stderr]   Downloaded futures v0.1.21
[INFO] [stderr]   Downloaded rand v0.4.2
[INFO] [stderr]   Downloaded procedural-masquerade v0.1.5
[INFO] [stderr]   Downloaded phf_generator v0.7.21
[INFO] [stderr]   Downloaded phf_shared v0.7.21
[INFO] [stderr]   Downloaded phf v0.7.21
[INFO] [stderr]   Downloaded phf_codegen v0.7.21
[INFO] [stderr]   Downloaded smallvec v0.6.0
[INFO] [stderr]   Downloaded proc-macro2 v0.3.6
[INFO] [stderr]   Downloaded syn v0.13.1
[INFO] [stderr]   Downloaded futures-await-await-macro v0.1.1
[INFO] [stderr]   Downloaded futures-await v0.1.1
[INFO] [stderr]   Downloaded cssparser v0.23.5
[INFO] [stderr]   Downloaded futures-await-async-macro v0.1.2
[INFO] [stderr]   Downloaded cssparser-macros v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 399bcc82d421ee6285da42df9db87402d5584b1a6091b14863b449b29985f00d
[INFO] running `Command { std: "docker" "start" "-a" "399bcc82d421ee6285da42df9db87402d5584b1a6091b14863b449b29985f00d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "399bcc82d421ee6285da42df9db87402d5584b1a6091b14863b449b29985f00d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "399bcc82d421ee6285da42df9db87402d5584b1a6091b14863b449b29985f00d", kill_on_drop: false }`
[INFO] [stdout] 399bcc82d421ee6285da42df9db87402d5584b1a6091b14863b449b29985f00d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c69dbdd46c0abfd2ac8738e9db0026390b68713f547338a126429f11da115ccb
[INFO] running `Command { std: "docker" "start" "-a" "c69dbdd46c0abfd2ac8738e9db0026390b68713f547338a126429f11da115ccb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.3.6
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]    Compiling procedural-masquerade v0.1.5
[INFO] [stderr]    Compiling futures v0.1.21
[INFO] [stderr]    Compiling smallvec v0.6.0
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling futures-await-await-macro v0.1.1
[INFO] [stderr]    Compiling dtoa-short v0.3.2
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Op` in `proc_macro`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:72:42
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 let mut op = proc_macro::Op::new(tt.op(), spacing);
[INFO] [stdout]    |                                          ^^ could not find `Op` in `proc_macro`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use Op;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Op`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 72 -                 let mut op = proc_macro::Op::new(tt.op(), spacing);
[INFO] [stdout] 72 +                 let mut op = Op::new(tt.op(), spacing);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Term` in crate `proc_macro`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:273:23
[INFO] [stdout]     |
[INFO] [stdout] 273 |     term: proc_macro::Term,
[INFO] [stdout]     |                       ^^^^ not found in `proc_macro`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 3   | use Term;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `Term`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 273 -     term: proc_macro::Term,
[INFO] [stdout] 273 +     term: Term,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Term` in `proc_macro`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:279:31
[INFO] [stdout]     |
[INFO] [stdout] 279 |             term: proc_macro::Term::new(string, span.0),
[INFO] [stdout]     |                               ^^^^ could not find `Term` in `proc_macro`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 3   | use Term;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `Term`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 279 -             term: proc_macro::Term::new(string, span.0),
[INFO] [stdout] 279 +             term: Term::new(string, span.0),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/lib.rs:28:34
[INFO] [stdout]    |
[INFO] [stdout] 28 | #![cfg_attr(feature = "nightly", feature(proc_macro))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `proc_macro` has been stable since `1.29.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:177:23
[INFO] [stdout]     |
[INFO] [stdout] 177 | pub struct SourceFile(proc_macro::SourceFile, FileName);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:180:16
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn new(sf: proc_macro::SourceFile) -> Self {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:247:13
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let proc_macro::LineColumn { line, column } = self.0.start();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:252:13
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let proc_macro::LineColumn { line, column } = self.0.end();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `empty` found for struct `proc_macro::TokenStream` in the current scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:18:46
[INFO] [stdout]    |
[INFO] [stdout] 18 |         TokenStream(proc_macro::TokenStream::empty())
[INFO] [stdout]    |                                              ^^^^^
[INFO] [stdout]    |                                              |
[INFO] [stdout]    |                                              function or associated item not found in `TokenStream`
[INFO] [stdout]    |                                              help: there is a method with a similar name: `is_empty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `Op` found for enum `proc_macro::TokenTree` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:132:36
[INFO] [stdout]     |
[INFO] [stdout] 132 |             proc_macro::TokenTree::Op(tt) => {
[INFO] [stdout]     |                                    ^^ variant or associated item not found in `TokenTree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `Term` found for enum `proc_macro::TokenTree` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:141:36
[INFO] [stdout]     |
[INFO] [stdout] 141 |             proc_macro::TokenTree::Term(s) => {
[INFO] [stdout]     |                                    ^^^^ variant or associated item not found in `TokenTree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:181:36
[INFO] [stdout]     |
[INFO] [stdout] 181 |         let filename = FileName(sf.path().to_string());
[INFO] [stdout]     |                                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: `PathBuf` doesn't implement `std::fmt::Display`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:181:43
[INFO] [stdout]     |
[INFO] [stdout] 181 |         let filename = FileName(sf.path().to_string());
[INFO] [stdout]     |                                           ^^^^^^^^^ `PathBuf` cannot be formatted with the default formatter; call `.display()` on it
[INFO] [stdout]    --> /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/path.rs:1168:1
[INFO] [stdout]     |
[INFO] [stdout]     = note: doesn't satisfy `PathBuf: ToString`
[INFO] [stdout]     |
[INFO] [stdout]     = note: doesn't satisfy `PathBuf: std::fmt::Display`
[INFO] [stdout]    ::: /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/path.rs:1989:1
[INFO] [stdout]     |
[INFO] [stdout]     = note: doesn't satisfy `Path: ToString`
[INFO] [stdout]     |
[INFO] [stdout]     = note: doesn't satisfy `Path: std::fmt::Display`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `PathBuf: std::fmt::Display`
[INFO] [stdout]             which is required by `PathBuf: ToString`
[INFO] [stdout]             `Path: std::fmt::Display`
[INFO] [stdout]             which is required by `Path: ToString`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:191:16
[INFO] [stdout]     |
[INFO] [stdout] 191 |         self.0.is_real()
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_def_site'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:227:14
[INFO] [stdout]     |
[INFO] [stdout] 227 |         Span(proc_macro::Span::def_site())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54724 <https://github.com/rust-lang/rust/issues/54724> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:243:32
[INFO] [stdout]     |
[INFO] [stdout] 243 |         SourceFile::new(self.0.source_file())
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:247:62
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let proc_macro::LineColumn { line, column } = self.0.start();
[INFO] [stdout]     |                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:247:38
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let proc_macro::LineColumn { line, column } = self.0.start();
[INFO] [stdout]     |                                      ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:247:44
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let proc_macro::LineColumn { line, column } = self.0.start();
[INFO] [stdout]     |                                            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:252:62
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let proc_macro::LineColumn { line, column } = self.0.end();
[INFO] [stdout]     |                                                              ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:252:38
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let proc_macro::LineColumn { line, column } = self.0.end();
[INFO] [stdout]     |                                      ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:252:44
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let proc_macro::LineColumn { line, column } = self.0.end();
[INFO] [stdout]     |                                            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:257:16
[INFO] [stdout]     |
[INFO] [stdout] 257 |         self.0.join(other.0).map(Span)
[INFO] [stdout]     |                ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.3.6/src/unstable.rs:261:16
[INFO] [stdout]     |
[INFO] [stdout] 261 |         self.0.eq(&other.0)
[INFO] [stdout]     |                ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stdout] error: aborting due to 24 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433, E0554, E0599, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` due to 25 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c69dbdd46c0abfd2ac8738e9db0026390b68713f547338a126429f11da115ccb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c69dbdd46c0abfd2ac8738e9db0026390b68713f547338a126429f11da115ccb", kill_on_drop: false }`
[INFO] [stdout] c69dbdd46c0abfd2ac8738e9db0026390b68713f547338a126429f11da115ccb
