[INFO] fetching crate foocalc 0.1.0...
[INFO] checking foocalc-0.1.0 against master#3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777 for pr-132289
[INFO] extracting crate foocalc 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate foocalc 0.1.0 on toolchain 3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate foocalc 0.1.0
[INFO] finished tweaking crates.io crate foocalc 0.1.0
[INFO] tweaked toml for crates.io crate foocalc 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate foocalc 0.1.0 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" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustyline-derive v0.7.0
[INFO] [stderr]   Downloaded str-buf v1.0.6
[INFO] [stderr]   Downloaded fd-lock v3.0.13
[INFO] [stderr]   Downloaded error-code v2.3.1
[INFO] [stderr]   Downloaded clipboard-win v4.5.0
[INFO] [stderr]   Downloaded peg-runtime v0.8.1
[INFO] [stderr]   Downloaded peg v0.8.1
[INFO] [stderr]   Downloaded peg-macros v0.8.1
[INFO] [stderr]   Downloaded rustyline v10.1.1
[INFO] [stderr]   Downloaded rug v1.19.2
[INFO] [stderr]   Downloaded regex v1.9.0
[INFO] [stderr]   Downloaded rustix v0.38.2
[INFO] [stderr]   Downloaded regex-automata v0.3.0
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.5.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a312fe4bce1637f7d13e62a6e2de6c00af14de09fcc9083cc24ad6dc7ae2289
[INFO] running `Command { std: "docker" "start" "-a" "3a312fe4bce1637f7d13e62a6e2de6c00af14de09fcc9083cc24ad6dc7ae2289", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a312fe4bce1637f7d13e62a6e2de6c00af14de09fcc9083cc24ad6dc7ae2289", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a312fe4bce1637f7d13e62a6e2de6c00af14de09fcc9083cc24ad6dc7ae2289", kill_on_drop: false }`
[INFO] [stdout] 3a312fe4bce1637f7d13e62a6e2de6c00af14de09fcc9083cc24ad6dc7ae2289
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b9c10cea89a1586c44cd8f745cc157512e1d19a61afebaaba72fa13bca65a36
[INFO] running `Command { std: "docker" "start" "-a" "3b9c10cea89a1586c44cd8f745cc157512e1d19a61afebaaba72fa13bca65a36", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling rustix v0.38.2
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.5.2
[INFO] [stderr]     Checking linux-raw-sys v0.4.3
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rug v1.19.2
[INFO] [stderr]    Compiling peg-runtime v0.8.1
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking regex-syntax v0.7.3
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking aho-corasick v1.0.2
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.56/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] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3b9c10cea89a1586c44cd8f745cc157512e1d19a61afebaaba72fa13bca65a36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b9c10cea89a1586c44cd8f745cc157512e1d19a61afebaaba72fa13bca65a36", kill_on_drop: false }`
[INFO] [stdout] 3b9c10cea89a1586c44cd8f745cc157512e1d19a61afebaaba72fa13bca65a36
