[INFO] cloning repository https://github.com/Szczurowski/rust-example-hero
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Szczurowski/rust-example-hero" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSzczurowski%2Frust-example-hero"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSzczurowski%2Frust-example-hero'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] db5b60b1109b1fbae2531d7568717bb77b4c28fc
[INFO] checking Szczurowski/rust-example-hero against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSzczurowski%2Frust-example-hero" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Szczurowski/rust-example-hero on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Szczurowski/rust-example-hero
[INFO] finished tweaking git repo https://github.com/Szczurowski/rust-example-hero
[INFO] tweaked toml for git repo https://github.com/Szczurowski/rust-example-hero written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/Szczurowski/rust-example-hero already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cc646f74e9dbc87c330f0d2e377df05dd78daa2cae018019c4ec8dd8ade587cc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "cc646f74e9dbc87c330f0d2e377df05dd78daa2cae018019c4ec8dd8ade587cc"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.12
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling matches v0.1.7
[INFO] [stderr]     Checking byteorder v1.2.4
[INFO] [stderr]    Compiling ryu v0.2.3
[INFO] [stderr]     Checking indexmap v1.0.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking slab v0.1.3
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking bufstream v0.1.3
[INFO] [stderr]     Checking separator v0.3.1
[INFO] [stderr]     Checking data-encoding v2.1.1
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking isatty v0.1.8
[INFO] [stderr]     Checking inotify v0.3.0
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking filetime v0.1.15
[INFO] [stderr]    Compiling pear_codegen v0.1.0 (http://github.com/SergioBenitez/Pear?rev=b475140#b4751403)
[INFO] [stderr]    Compiling rocket v0.4.0-dev (https://github.com/SergioBenitez/Rocket?rev=fe9fad3#fe9fad33)
[INFO] [stderr]    Compiling rocket_codegen v0.4.0-dev (https://github.com/SergioBenitez/Rocket?rev=fe9fad3#fe9fad33)
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking walkdir v2.2.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking base64 v0.9.2
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking semver v0.8.0
[INFO] [stderr]    Compiling smallvec v0.6.4
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking serde_json v1.0.26
[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-macro2-0.4.12/src/unstable.rs:346:27
[INFO] [stderr]     |
[INFO] [stderr] 346 |             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: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[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" "cc646f74e9dbc87c330f0d2e377df05dd78daa2cae018019c4ec8dd8ade587cc"`
[INFO] running `"docker" "rm" "-f" "cc646f74e9dbc87c330f0d2e377df05dd78daa2cae018019c4ec8dd8ade587cc"`
[INFO] [stdout] cc646f74e9dbc87c330f0d2e377df05dd78daa2cae018019c4ec8dd8ade587cc