[INFO] fetching crate abnf 0.13.0...
[INFO] checking abnf-0.13.0 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate abnf 0.13.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate abnf 0.13.0 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate abnf 0.13.0
[INFO] finished tweaking crates.io crate abnf 0.13.0
[INFO] tweaked toml for crates.io crate abnf 0.13.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate abnf 0.13.0 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" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quickcheck_macros v1.0.0
[INFO] [stderr]   Downloaded rand_distr v0.4.3
[INFO] [stderr]   Downloaded autocfg v1.1.0
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.16
[INFO] [stderr]   Downloaded libm v0.2.5
[INFO] [stderr]   Downloaded abnf-core v0.5.0
[INFO] [stderr]   Downloaded unicode-ident v1.0.5
[INFO] [stderr]   Downloaded quickcheck v1.0.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.47
[INFO] [stderr]   Downloaded minimal-lexical v0.2.1
[INFO] [stderr]   Downloaded quote v1.0.21
[INFO] [stderr]   Downloaded nom v7.1.1
[INFO] [stderr]   Downloaded aho-corasick v0.7.19
[INFO] [stderr]   Downloaded env_logger v0.8.4
[INFO] [stderr]   Downloaded num-traits v0.2.15
[INFO] [stderr]   Downloaded getrandom v0.2.8
[INFO] [stderr]   Downloaded syn v1.0.103
[INFO] [stderr]   Downloaded regex v1.6.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.27
[INFO] [stderr]   Downloaded libc v0.2.135
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6603d61c526a0f9c995de680622d3af61f0da4e8188c1891530de4748f8ca425
[INFO] running `Command { std: "docker" "start" "-a" "6603d61c526a0f9c995de680622d3af61f0da4e8188c1891530de4748f8ca425", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6603d61c526a0f9c995de680622d3af61f0da4e8188c1891530de4748f8ca425", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6603d61c526a0f9c995de680622d3af61f0da4e8188c1891530de4748f8ca425", kill_on_drop: false }`
[INFO] [stdout] 6603d61c526a0f9c995de680622d3af61f0da4e8188c1891530de4748f8ca425
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab99352c0ecca56de6d899c019a87d24bdbfd7ead843df90543467aaea978e50
[INFO] running `Command { std: "docker" "start" "-a" "ab99352c0ecca56de6d899c019a87d24bdbfd7ead843df90543467aaea978e50", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling libm v0.2.5
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling num-traits v0.2.15
[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] [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" "ab99352c0ecca56de6d899c019a87d24bdbfd7ead843df90543467aaea978e50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab99352c0ecca56de6d899c019a87d24bdbfd7ead843df90543467aaea978e50", kill_on_drop: false }`
[INFO] [stdout] ab99352c0ecca56de6d899c019a87d24bdbfd7ead843df90543467aaea978e50