[INFO] cloning repository https://github.com/crystal-linux/tourmaline
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/crystal-linux/tourmaline" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrystal-linux%2Ftourmaline", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrystal-linux%2Ftourmaline'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e58c918dae04f673f2cab0a18e91361d6d36cdc6
[INFO] checking crystal-linux/tourmaline against master#6162f6f12339aa81fe16b8a64644ead497e411b2 for pr-113242
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrystal-linux%2Ftourmaline" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/crystal-linux/tourmaline 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/crystal-linux/tourmaline
[INFO] finished tweaking git repo https://github.com/crystal-linux/tourmaline
[INFO] tweaked toml for git repo https://github.com/crystal-linux/tourmaline written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/crystal-linux/tourmaline 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 ...
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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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee993f43a891aa038ad20d6b3f732eded246bc6de588237f914956de7eb1a3e8
[INFO] running `Command { std: "docker" "start" "-a" "ee993f43a891aa038ad20d6b3f732eded246bc6de588237f914956de7eb1a3e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee993f43a891aa038ad20d6b3f732eded246bc6de588237f914956de7eb1a3e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee993f43a891aa038ad20d6b3f732eded246bc6de588237f914956de7eb1a3e8", kill_on_drop: false }`
[INFO] [stdout] ee993f43a891aa038ad20d6b3f732eded246bc6de588237f914956de7eb1a3e8
[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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88ef82c6bfb733915b551a7e9b6650a22efd925d26770617d22bbeea08d3acca
[INFO] running `Command { std: "docker" "start" "-a" "88ef82c6bfb733915b551a7e9b6650a22efd925d26770617d22bbeea08d3acca", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]    Compiling uncased v0.9.7
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking pure-rust-locales v0.5.6
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling openssl-sys v0.9.76
[INFO] [stderr]    Compiling sys-locale v0.2.1
[INFO] [stderr]    Compiling backtrace v0.3.66
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.46/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 futures-core v0.3.24
[INFO] [stderr]     Checking gimli v0.26.2
[INFO] [stderr]     Checking bytes v1.2.1
[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" "88ef82c6bfb733915b551a7e9b6650a22efd925d26770617d22bbeea08d3acca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88ef82c6bfb733915b551a7e9b6650a22efd925d26770617d22bbeea08d3acca", kill_on_drop: false }`
[INFO] [stdout] 88ef82c6bfb733915b551a7e9b6650a22efd925d26770617d22bbeea08d3acca