[INFO] cloning repository https://github.com/FreeMasen/wasm_hw
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FreeMasen/wasm_hw" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFreeMasen%2Fwasm_hw", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFreeMasen%2Fwasm_hw'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d069db1d0b089f090bc28632a915745bbb1c210
[INFO] checking FreeMasen/wasm_hw against master#9610dfe5a9a731ced1ea4923ecbd0c57fe367898 for beta-170-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFreeMasen%2Fwasm_hw" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FreeMasen/wasm_hw on toolchain 9610dfe5a9a731ced1ea4923ecbd0c57fe367898
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FreeMasen/wasm_hw
[INFO] finished tweaking git repo https://github.com/FreeMasen/wasm_hw
[INFO] tweaked toml for git repo https://github.com/FreeMasen/wasm_hw written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/FreeMasen/wasm_hw 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" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.43
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.5
[INFO] [stderr]   Downloaded serde_json v1.0.16
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.5
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.5
[INFO] [stderr]   Downloaded serde_derive v1.0.43
[INFO] [stderr]   Downloaded proc-macro2 v0.3.7
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4fabdb65f2b176dd5fc867860c01f49e9ddd36d854a85947fb4aaf09d9b1e55
[INFO] running `Command { std: "docker" "start" "-a" "f4fabdb65f2b176dd5fc867860c01f49e9ddd36d854a85947fb4aaf09d9b1e55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4fabdb65f2b176dd5fc867860c01f49e9ddd36d854a85947fb4aaf09d9b1e55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4fabdb65f2b176dd5fc867860c01f49e9ddd36d854a85947fb4aaf09d9b1e55", kill_on_drop: false }`
[INFO] [stdout] f4fabdb65f2b176dd5fc867860c01f49e9ddd36d854a85947fb4aaf09d9b1e55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25bc7301fa8f9db30c9480d0fea4d7c0174296c0a3eaeb128db018fef329f7f0
[INFO] running `Command { std: "docker" "start" "-a" "25bc7301fa8f9db30c9480d0fea4d7c0174296c0a3eaeb128db018fef329f7f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.3.7
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.5
[INFO] [stderr]    Compiling serde v1.0.43
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling itoa v0.4.1
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Op` in `proc_macro`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:264:23
[INFO] [stdout]     |
[INFO] [stdout] 264 |     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] 264 -     term: proc_macro::Term,
[INFO] [stdout] 264 +     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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:270:31
[INFO] [stdout]     |
[INFO] [stdout] 270 |             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] 270 -             term: proc_macro::Term::new(string, span.0),
[INFO] [stdout] 270 +             term: Term::new(string, span.0),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:168:23
[INFO] [stdout]     |
[INFO] [stdout] 168 | 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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes 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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:171:16
[INFO] [stdout]     |
[INFO] [stdout] 171 |     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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes 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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:238:13
[INFO] [stdout]     |
[INFO] [stdout] 238 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes 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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:243:13
[INFO] [stdout]     |
[INFO] [stdout] 243 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes to enable
[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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:131:36
[INFO] [stdout]     |
[INFO] [stdout] 131 |             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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:140:36
[INFO] [stdout]     |
[INFO] [stdout] 140 |             proc_macro::TokenTree::Term(s) => ::Term::_new(Term { term: s }).into(),
[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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:172:36
[INFO] [stdout]     |
[INFO] [stdout] 172 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: `PathBuf` doesn't implement `std::fmt::Display`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:172:43
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let filename = FileName(sf.path().to_string());
[INFO] [stdout]     |                                           ^^^^^^^^^ `PathBuf` cannot be formatted with the default formatter; call `.display()` on it
[INFO] [stdout]    --> /rustc/9610dfe5a9a731ced1ea4923ecbd0c57fe367898/library/std/src/path.rs:1167:1
[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/9610dfe5a9a731ced1ea4923ecbd0c57fe367898/library/std/src/path.rs:1992:1
[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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:182:16
[INFO] [stdout]     |
[INFO] [stdout] 182 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes to enable
[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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:218:14
[INFO] [stdout]     |
[INFO] [stdout] 218 |         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]     = help: add `#![feature(proc_macro_def_site)]` to the crate attributes 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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:234:32
[INFO] [stdout]     |
[INFO] [stdout] 234 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes 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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:238:62
[INFO] [stdout]     |
[INFO] [stdout] 238 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes 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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:238:38
[INFO] [stdout]     |
[INFO] [stdout] 238 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes 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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:238:44
[INFO] [stdout]     |
[INFO] [stdout] 238 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes 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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:243:62
[INFO] [stdout]     |
[INFO] [stdout] 243 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes 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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:243:38
[INFO] [stdout]     |
[INFO] [stdout] 243 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes 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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:243:44
[INFO] [stdout]     |
[INFO] [stdout] 243 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes 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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:248:16
[INFO] [stdout]     |
[INFO] [stdout] 248 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes 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/index.crates.io-6f17d22bba15001f/proc-macro2-0.3.7/src/unstable.rs:252:16
[INFO] [stdout]     |
[INFO] [stdout] 252 |         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]     = help: add `#![feature(proc_macro_span)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 23 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433, 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` (lib) due to 24 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "25bc7301fa8f9db30c9480d0fea4d7c0174296c0a3eaeb128db018fef329f7f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25bc7301fa8f9db30c9480d0fea4d7c0174296c0a3eaeb128db018fef329f7f0", kill_on_drop: false }`
[INFO] [stdout] 25bc7301fa8f9db30c9480d0fea4d7c0174296c0a3eaeb128db018fef329f7f0
