[INFO] cloning repository https://github.com/madskills700/bpe-rust-testing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/madskills700/bpe-rust-testing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadskills700%2Fbpe-rust-testing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadskills700%2Fbpe-rust-testing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a084a473c45d667cc824351f110a5fc1df30375
[INFO] checking madskills700/bpe-rust-testing against master#6162f6f12339aa81fe16b8a64644ead497e411b2 for pr-113240
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadskills700%2Fbpe-rust-testing" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/madskills700/bpe-rust-testing on toolchain 6162f6f12339aa81fe16b8a64644ead497e411b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/madskills700/bpe-rust-testing
[INFO] finished tweaking git repo https://github.com/madskills700/bpe-rust-testing
[INFO] tweaked toml for git repo https://github.com/madskills700/bpe-rust-testing written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/madskills700/bpe-rust-testing 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" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.11
[INFO] [stderr]   Downloaded macro_rules_attribute v0.1.2
[INFO] [stderr]   Downloaded number_prefix v0.3.0
[INFO] [stderr]   Downloaded unicode-normalization-alignments v0.1.12
[INFO] [stderr]   Downloaded macro_rules_attribute-proc_macro v0.1.2
[INFO] [stderr]   Downloaded zip-extensions v0.6.1
[INFO] [stderr]   Downloaded rayon-cond v0.1.0
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.79
[INFO] [stderr]   Downloaded indicatif v0.15.0
[INFO] [stderr]   Downloaded dirs v3.0.2
[INFO] [stderr]   Downloaded zip v0.5.13
[INFO] [stderr]   Downloaded serde_json v1.0.86
[INFO] [stderr]   Downloaded libc v0.2.135
[INFO] [stderr]   Downloaded cxx v1.0.79
[INFO] [stderr]   Downloaded spm_precompiled v0.1.4
[INFO] [stderr]   Downloaded openssl-src v111.22.0+1.1.1q
[INFO] [stderr]   Downloaded syn v1.0.102
[INFO] [stderr]   Downloaded tokenizers v0.13.1
[INFO] [stderr]   Downloaded cxx-build v1.0.79
[INFO] [stderr]   Downloaded esaxx-rs v0.1.8
[INFO] [stderr]   Downloaded itertools v0.8.2
[INFO] [stderr]   Downloaded cached-path v0.5.3
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.79
[INFO] [stderr]   Downloaded indicatif v0.16.2
[INFO] [stderr]   Downloaded xattr v0.2.3
[INFO] [stderr]   Downloaded bzip2 v0.4.3
[INFO] [stderr]   Downloaded console v0.15.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a271a7c253405248a627887ee6419e7fb26053ea1e32673f2c5133b9f788e506
[INFO] running `Command { std: "docker" "start" "-a" "a271a7c253405248a627887ee6419e7fb26053ea1e32673f2c5133b9f788e506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a271a7c253405248a627887ee6419e7fb26053ea1e32673f2c5133b9f788e506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a271a7c253405248a627887ee6419e7fb26053ea1e32673f2c5133b9f788e506", kill_on_drop: false }`
[INFO] [stdout] a271a7c253405248a627887ee6419e7fb26053ea1e32673f2c5133b9f788e506
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5824c9c099d5567c9d67b422e89185e5a512cb338110938163a3b23df18178ee
[INFO] running `Command { std: "docker" "start" "-a" "5824c9c099d5567c9d67b422e89185e5a512cb338110938163a3b23df18178ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling openssl-src v111.22.0+1.1.1q
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[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" "5824c9c099d5567c9d67b422e89185e5a512cb338110938163a3b23df18178ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5824c9c099d5567c9d67b422e89185e5a512cb338110938163a3b23df18178ee", kill_on_drop: false }`
[INFO] [stdout] 5824c9c099d5567c9d67b422e89185e5a512cb338110938163a3b23df18178ee