[INFO] updating cached repository https://github.com/ghondar/rust-example
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 09f106acc616a91f1625f44c051e8fba98809d57
[INFO] checking ghondar/rust-example against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghondar%2Frust-example" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ghondar/rust-example on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ghondar/rust-example
[INFO] finished tweaking git repo https://github.com/ghondar/rust-example
[INFO] tweaked toml for git repo https://github.com/ghondar/rust-example written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ghondar/rust-example already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: unused manifest key: development
[INFO] [stderr] warning: unused manifest key: production
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 329a2b80f339e01482ece094f1864e613db5ebb5a9030826e8663b0793610255
[INFO] running `"docker" "start" "-a" "329a2b80f339e01482ece094f1864e613db5ebb5a9030826e8663b0793610255"`
[INFO] [stderr] warning: unused manifest key: development
[INFO] [stderr] warning: unused manifest key: production
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]     Checking untrusted v0.6.1
[INFO] [stderr]     Checking smallvec v0.6.1
[INFO] [stderr]    Compiling httparse v1.2.4
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]    Compiling indexmap v1.0.1
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking yansi v0.4.0
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking separator v0.3.1
[INFO] [stderr]     Checking data-encoding v1.2.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling ring v0.13.0-alpha5
[INFO] [stderr]    Compiling pear_codegen v0.1.0 (http://github.com/SergioBenitez/Pear?rev=54667ae#54667aef)
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling rocket v0.4.0-dev (https://github.com/SergioBenitez/Rocket#df711114)
[INFO] [stderr]     Checking isatty v0.1.8
[INFO] [stderr]    Compiling rocket_codegen v0.4.0-dev (https://github.com/SergioBenitez/Rocket#df711114)
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.6/src/unstable.rs:284:13
[INFO] [stderr]     |
[INFO] [stderr] 284 |     Nightly(proc_macro::SourceFile, FileName),
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stderr]     = help: add `#![feature(proc_macro_span)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.6/src/unstable.rs:289:20
[INFO] [stderr]     |
[INFO] [stderr] 289 |     fn nightly(sf: proc_macro::SourceFile) -> Self {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stderr]     = help: add `#![feature(proc_macro_span)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling base64 v0.9.2
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.6/src/unstable.rs:290:45
[INFO] [stderr]     |
[INFO] [stderr] 290 |         let filename = stable::file_name(sf.path().to_string());
[INFO] [stderr]     |                                             ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stderr]     = help: add `#![feature(proc_macro_span)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `to_string` found for struct `std::path::PathBuf` in the current scope
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.6/src/unstable.rs:290:52
[INFO] [stderr]      |
[INFO] [stderr] 290  |           let filename = stable::file_name(sf.path().to_string());
[INFO] [stderr]      |                                                      ^^^^^^^^^ help: there is an associated function with a similar name: `to_str`
[INFO] [stderr]      |
[INFO] [stderr]      = note: the method `to_string` exists but the following trait bounds were not satisfied:
[INFO] [stderr]              `std::path::PathBuf: std::fmt::Display`
[INFO] [stderr]              which is required by `std::path::PathBuf: std::string::ToString`
[INFO] [stderr]              `std::path::Path: std::fmt::Display`
[INFO] [stderr]              which is required by `std::path::Path: std::string::ToString`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.6/src/unstable.rs:304:44
[INFO] [stderr]     |
[INFO] [stderr] 304 |             SourceFile::Nightly(a, _) => a.is_real(),
[INFO] [stderr]     |                                            ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stderr]     = help: add `#![feature(proc_macro_span)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site'
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.6/src/unstable.rs:347:27
[INFO] [stderr]     |
[INFO] [stderr] 347 |             Span::Nightly(proc_macro::Span::def_site())
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #54724 <https://github.com/rust-lang/rust/issues/54724> for more information
[INFO] [stderr]     = help: add `#![feature(proc_macro_def_site)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.6/src/unstable.rs:355:69
[INFO] [stderr]     |
[INFO] [stderr] 355 |             (Span::Nightly(a), Span::Nightly(b)) => Span::Nightly(a.resolved_at(b)),
[INFO] [stderr]     |                                                                     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stderr]     = help: add `#![feature(proc_macro_span)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.6/src/unstable.rs:363:69
[INFO] [stderr]     |
[INFO] [stderr] 363 |             (Span::Nightly(a), Span::Nightly(b)) => Span::Nightly(a.located_at(b)),
[INFO] [stderr]     |                                                                     ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stderr]     = help: add `#![feature(proc_macro_span)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'proc_macro_span'
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.6/src/unstable.rs:424:55
[INFO] [stderr]     |
[INFO] [stderr] 424 |             (Span::Nightly(a), Span::Nightly(b)) => a.eq(b),
[INFO] [stderr]     |                                                       ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #54725 <https://github.com/rust-lang/rust/issues/54725> for more information
[INFO] [stderr]     = help: add `#![feature(proc_macro_span)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'proc_macro_raw_ident'
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.6/src/unstable.rs:475:48
[INFO] [stderr]     |
[INFO] [stderr] 475 |             Span::Nightly(s) => Ident::Nightly(proc_macro::Ident::new_raw(string, s)),
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #54723 <https://github.com/rust-lang/rust/issues/54723> for more information
[INFO] [stderr]     = help: add `#![feature(proc_macro_raw_ident)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr] error: aborting due to 10 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0599, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `proc-macro2`.
[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] [stderr] error: build failed
[INFO] running `"docker" "inspect" "329a2b80f339e01482ece094f1864e613db5ebb5a9030826e8663b0793610255"`
[INFO] running `"docker" "rm" "-f" "329a2b80f339e01482ece094f1864e613db5ebb5a9030826e8663b0793610255"`
[INFO] [stdout] 329a2b80f339e01482ece094f1864e613db5ebb5a9030826e8663b0793610255
