[INFO] cloning repository https://github.com/lmagitem-learning/doc-to-type
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lmagitem-learning/doc-to-type" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flmagitem-learning%2Fdoc-to-type", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flmagitem-learning%2Fdoc-to-type'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6d91bc246f6b7b47623d26ea464692a5148ca87
[INFO] checking lmagitem-learning/doc-to-type against master#75530e9f72a1990ed2305e16fd51d02f47048f12 for pr-135899
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flmagitem-learning%2Fdoc-to-type" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lmagitem-learning/doc-to-type on toolchain 75530e9f72a1990ed2305e16fd51d02f47048f12
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lmagitem-learning/doc-to-type
[INFO] finished tweaking git repo https://github.com/lmagitem-learning/doc-to-type
[INFO] tweaked toml for git repo https://github.com/lmagitem-learning/doc-to-type written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lmagitem-learning/doc-to-type 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" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:6475c868a6d27846ca172efb246699580b64b57a5b3744ef73949e850a31b38a" "/opt/rustwide/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1cf26e217451c548e480020684946fdb00b59bbc7933127e9fda405ca25b7838
[INFO] running `Command { std: "docker" "start" "-a" "1cf26e217451c548e480020684946fdb00b59bbc7933127e9fda405ca25b7838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cf26e217451c548e480020684946fdb00b59bbc7933127e9fda405ca25b7838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cf26e217451c548e480020684946fdb00b59bbc7933127e9fda405ca25b7838", kill_on_drop: false }`
[INFO] [stdout] 1cf26e217451c548e480020684946fdb00b59bbc7933127e9fda405ca25b7838
[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=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@sha256:6475c868a6d27846ca172efb246699580b64b57a5b3744ef73949e850a31b38a" "/opt/rustwide/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4696b646a3cd39c94c8d0e9448262d3506c7be51cdb0e24019804463a6826f35
[INFO] running `Command { std: "docker" "start" "-a" "4696b646a3cd39c94c8d0e9448262d3506c7be51cdb0e24019804463a6826f35", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling serde_json v1.0.86
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking unicode-segmentation v1.10.0
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking convert_case v0.6.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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" "4696b646a3cd39c94c8d0e9448262d3506c7be51cdb0e24019804463a6826f35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4696b646a3cd39c94c8d0e9448262d3506c7be51cdb0e24019804463a6826f35", kill_on_drop: false }`
[INFO] [stdout] 4696b646a3cd39c94c8d0e9448262d3506c7be51cdb0e24019804463a6826f35