[INFO] cloning repository https://github.com/oleoneto/get-going-with-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oleoneto/get-going-with-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foleoneto%2Fget-going-with-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foleoneto%2Fget-going-with-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5420ed43752cf5050630ce3490f70dca916f9a18
[INFO] checking oleoneto/get-going-with-rust against try#8384de5d92dd9b1c0b67caa5c1c1b11bf606490f for pr-146300
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foleoneto%2Fget-going-with-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/oleoneto/get-going-with-rust
[INFO] finished tweaking git repo https://github.com/oleoneto/get-going-with-rust
[INFO] tweaked toml for git repo https://github.com/oleoneto/get-going-with-rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/oleoneto/get-going-with-rust on toolchain 8384de5d92dd9b1c0b67caa5c1c1b11bf606490f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8384de5d92dd9b1c0b67caa5c1c1b11bf606490f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/oleoneto/get-going-with-rust 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" "+8384de5d92dd9b1c0b67caa5c1c1b11bf606490f" "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 ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+8384de5d92dd9b1c0b67caa5c1c1b11bf606490f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb79f45d17510a1f434ec83488ea80783f2defd1fedf69aa72dc223e6708c3a2
[INFO] running `Command { std: "docker" "start" "-a" "eb79f45d17510a1f434ec83488ea80783f2defd1fedf69aa72dc223e6708c3a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb79f45d17510a1f434ec83488ea80783f2defd1fedf69aa72dc223e6708c3a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb79f45d17510a1f434ec83488ea80783f2defd1fedf69aa72dc223e6708c3a2", kill_on_drop: false }`
[INFO] [stdout] eb79f45d17510a1f434ec83488ea80783f2defd1fedf69aa72dc223e6708c3a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+8384de5d92dd9b1c0b67caa5c1c1b11bf606490f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35ff5b1a072062bd0257ef302c0b8f7ad3dc0ea5c0c03fbaeb3a13238839b7ac
[INFO] running `Command { std: "docker" "start" "-a" "35ff5b1a072062bd0257ef302c0b8f7ad3dc0ea5c0c03fbaeb3a13238839b7ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling erased-serde v0.3.25
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling log v0.4.18
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.59/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 slab v0.4.8
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking async-lock v2.7.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling polling v2.8.0
[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" "35ff5b1a072062bd0257ef302c0b8f7ad3dc0ea5c0c03fbaeb3a13238839b7ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35ff5b1a072062bd0257ef302c0b8f7ad3dc0ea5c0c03fbaeb3a13238839b7ac", kill_on_drop: false }`
[INFO] [stdout] 35ff5b1a072062bd0257ef302c0b8f7ad3dc0ea5c0c03fbaeb3a13238839b7ac