[INFO] cloning repository https://github.com/AmberThrall/mdbook-environments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AmberThrall/mdbook-environments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmberThrall%2Fmdbook-environments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmberThrall%2Fmdbook-environments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3c2b8dcc0856c7a8ceb263f0952bf308e437598
[INFO] checking AmberThrall/mdbook-environments against try#438eb4c1a1c3841523d7f672601e8adbe04cff28 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmberThrall%2Fmdbook-environments" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AmberThrall/mdbook-environments
[INFO] finished tweaking git repo https://github.com/AmberThrall/mdbook-environments
[INFO] tweaked toml for git repo https://github.com/AmberThrall/mdbook-environments written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AmberThrall/mdbook-environments on toolchain 438eb4c1a1c3841523d7f672601e8adbe04cff28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AmberThrall/mdbook-environments 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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 689b274900702f8904cba71adff62ddd89422d6af7cae23d0203c1bdd58f6cc8
[INFO] running `Command { std: "docker" "start" "-a" "689b274900702f8904cba71adff62ddd89422d6af7cae23d0203c1bdd58f6cc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "689b274900702f8904cba71adff62ddd89422d6af7cae23d0203c1bdd58f6cc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "689b274900702f8904cba71adff62ddd89422d6af7cae23d0203c1bdd58f6cc8", kill_on_drop: false }`
[INFO] [stdout] 689b274900702f8904cba71adff62ddd89422d6af7cae23d0203c1bdd58f6cc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d24794e0feea65093ac12647b4fdd1e5929ca097768cc4466794b55a8b009f2
[INFO] running `Command { std: "docker" "start" "-a" "2d24794e0feea65093ac12647b4fdd1e5929ca097768cc4466794b55a8b009f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling serde_derive v1.0.156
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]    Compiling serde v1.0.156
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]    Compiling thiserror v1.0.39
[INFO] [stderr]    Compiling futures-core v0.3.27
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]     Checking generic-array v0.14.6
[INFO] [stderr]    Compiling io-lifetimes v1.0.7
[INFO] [stderr]    Compiling tokio v1.26.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling rustix v0.36.9
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking linux-raw-sys v0.1.4
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling futures-task v0.3.27
[INFO] [stderr]     Checking futures-sink v0.3.27
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]     Checking unicode-bidi v0.3.11
[INFO] [stderr]    Compiling futures-util v0.3.27
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.52/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 rand_core v0.6.4
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]     Checking digest v0.10.6
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[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" "2d24794e0feea65093ac12647b4fdd1e5929ca097768cc4466794b55a8b009f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d24794e0feea65093ac12647b4fdd1e5929ca097768cc4466794b55a8b009f2", kill_on_drop: false }`
[INFO] [stdout] 2d24794e0feea65093ac12647b4fdd1e5929ca097768cc4466794b55a8b009f2
