[INFO] cloning repository https://github.com/71e6fd52/lyne_solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/71e6fd52/lyne_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F71e6fd52%2Flyne_solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F71e6fd52%2Flyne_solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86414d03cd05135799fe53f156180e47a6eebb42
[INFO] checking 71e6fd52/lyne_solver against master#46424fb5054f211ec836c5c03159f92e46bb35ac for pr-139042
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F71e6fd52%2Flyne_solver" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/71e6fd52/lyne_solver on toolchain 46424fb5054f211ec836c5c03159f92e46bb35ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/71e6fd52/lyne_solver
[INFO] finished tweaking git repo https://github.com/71e6fd52/lyne_solver
[INFO] tweaked toml for git repo https://github.com/71e6fd52/lyne_solver written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/71e6fd52/lyne_solver 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" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded humantime v1.3.0
[INFO] [stderr]   Downloaded env_logger v0.7.1
[INFO] [stderr]   Downloaded pretty_env_logger v0.4.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.50
[INFO] [stderr]   Downloaded iter_tools v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e4ca193c5290e479742ed3d6c0b47fdc1706fd30196d508bb62174e881f0211
[INFO] running `Command { std: "docker" "start" "-a" "5e4ca193c5290e479742ed3d6c0b47fdc1706fd30196d508bb62174e881f0211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e4ca193c5290e479742ed3d6c0b47fdc1706fd30196d508bb62174e881f0211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e4ca193c5290e479742ed3d6c0b47fdc1706fd30196d508bb62174e881f0211", kill_on_drop: false }`
[INFO] [stdout] 5e4ca193c5290e479742ed3d6c0b47fdc1706fd30196d508bb62174e881f0211
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+46424fb5054f211ec836c5c03159f92e46bb35ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f03f3d1ddc4a8d91936990d6a65ddf430a5146307d9d37593cffb2af2f02e822
[INFO] running `Command { std: "docker" "start" "-a" "f03f3d1ddc4a8d91936990d6a65ddf430a5146307d9d37593cffb2af2f02e822", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling rustversion v1.0.11
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/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]     Checking itertools v0.10.5
[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" "f03f3d1ddc4a8d91936990d6a65ddf430a5146307d9d37593cffb2af2f02e822", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f03f3d1ddc4a8d91936990d6a65ddf430a5146307d9d37593cffb2af2f02e822", kill_on_drop: false }`
[INFO] [stdout] f03f3d1ddc4a8d91936990d6a65ddf430a5146307d9d37593cffb2af2f02e822
