[INFO] fetching crate cocotools 0.0.7...
[INFO] checking cocotools-0.0.7 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate cocotools 0.0.7 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate cocotools 0.0.7 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cocotools 0.0.7
[INFO] finished tweaking crates.io crate cocotools 0.0.7
[INFO] tweaked toml for crates.io crate cocotools 0.0.7 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate cocotools 0.0.7 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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pyo3-macros v0.18.1
[INFO] [stderr]   Downloaded minifb v0.23.0
[INFO] [stderr]   Downloaded clap_lex v0.3.2
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[INFO] [stderr]   Downloaded serde_derive v1.0.152
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 911d00bc9ebe22ec34cb35f75e8f3a6c28ba7d4ecc7467e916d278c2e1cc11b4
[INFO] running `Command { std: "docker" "start" "-a" "911d00bc9ebe22ec34cb35f75e8f3a6c28ba7d4ecc7467e916d278c2e1cc11b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "911d00bc9ebe22ec34cb35f75e8f3a6c28ba7d4ecc7467e916d278c2e1cc11b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "911d00bc9ebe22ec34cb35f75e8f3a6c28ba7d4ecc7467e916d278c2e1cc11b4", kill_on_drop: false }`
[INFO] [stdout] 911d00bc9ebe22ec34cb35f75e8f3a6c28ba7d4ecc7467e916d278c2e1cc11b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c79c53b01e34db712d836636e6bb9dc174ba0b6072134cce27ca1304f915d513
[INFO] running `Command { std: "docker" "start" "-a" "c79c53b01e34db712d836636e6bb9dc174ba0b6072134cce27ca1304f915d513", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.51/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 io-lifetimes v1.0.6
[INFO] [stderr]     Checking futures-sink v0.3.26
[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" "c79c53b01e34db712d836636e6bb9dc174ba0b6072134cce27ca1304f915d513", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c79c53b01e34db712d836636e6bb9dc174ba0b6072134cce27ca1304f915d513", kill_on_drop: false }`
[INFO] [stdout] c79c53b01e34db712d836636e6bb9dc174ba0b6072134cce27ca1304f915d513
