[INFO] cloning repository https://github.com/robert-oleynik/gitserver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robert-oleynik/gitserver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobert-oleynik%2Fgitserver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobert-oleynik%2Fgitserver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 50e2515850b47e827b2672b7cfa9e30768ea9aec
[INFO] checking robert-oleynik/gitserver against try#f70ee28831acc074c109afab32d287057c3eca46 for pr-149389
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobert-oleynik%2Fgitserver" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/robert-oleynik/gitserver
[INFO] finished tweaking git repo https://github.com/robert-oleynik/gitserver
[INFO] tweaked toml for git repo https://github.com/robert-oleynik/gitserver written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/robert-oleynik/gitserver on toolchain f70ee28831acc074c109afab32d287057c3eca46
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/robert-oleynik/gitserver 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" "+f70ee28831acc074c109afab32d287057c3eca46" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tf-bindgen-schema v0.1.0
[INFO] [stderr]   Downloaded tf-bindgen-cli v0.1.0
[INFO] [stderr]   Downloaded tf-bindgen-codegen v0.1.0
[INFO] [stderr]   Downloaded tf-bindgen-core v0.1.0
[INFO] [stderr]   Downloaded tf-kubernetes v0.1.1
[INFO] [stderr]   Downloaded tf-bindgen v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32a77932db12e4b4aabd4f66a25015a6294ec05f2d32c173ceca9524abbce373
[INFO] running `Command { std: "docker" "start" "-a" "32a77932db12e4b4aabd4f66a25015a6294ec05f2d32c173ceca9524abbce373", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32a77932db12e4b4aabd4f66a25015a6294ec05f2d32c173ceca9524abbce373", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32a77932db12e4b4aabd4f66a25015a6294ec05f2d32c173ceca9524abbce373", kill_on_drop: false }`
[INFO] [stdout] 32a77932db12e4b4aabd4f66a25015a6294ec05f2d32c173ceca9524abbce373
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6753533c6f7bbdd8a2d1d907f252cb922d7ca3eeb9bc7f2cf86f65f1e7da9dee
[INFO] running `Command { std: "docker" "start" "-a" "6753533c6f7bbdd8a2d1d907f252cb922d7ca3eeb9bc7f2cf86f65f1e7da9dee", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.54
[INFO] [stderr]    Compiling serde_json v1.0.95
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling anyhow v1.0.70
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling digest v0.10.6
[INFO] [stderr]    Compiling cpufeatures v0.2.6
[INFO] [stderr]    Compiling io-lifetimes v1.0.9
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.54/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 indexmap v1.9.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[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" "6753533c6f7bbdd8a2d1d907f252cb922d7ca3eeb9bc7f2cf86f65f1e7da9dee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6753533c6f7bbdd8a2d1d907f252cb922d7ca3eeb9bc7f2cf86f65f1e7da9dee", kill_on_drop: false }`
[INFO] [stdout] 6753533c6f7bbdd8a2d1d907f252cb922d7ca3eeb9bc7f2cf86f65f1e7da9dee