[INFO] fetching crate docs_to_markdown 0.1.4...
[INFO] checking docs_to_markdown-0.1.4 against try#45b14c26f76a39a9945ef8518d3276f1bc880008 for pr-113242
[INFO] extracting crate docs_to_markdown 0.1.4 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate docs_to_markdown 0.1.4 on toolchain 45b14c26f76a39a9945ef8518d3276f1bc880008
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+45b14c26f76a39a9945ef8518d3276f1bc880008" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate docs_to_markdown 0.1.4
[INFO] finished tweaking crates.io crate docs_to_markdown 0.1.4
[INFO] tweaked toml for crates.io crate docs_to_markdown 0.1.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate docs_to_markdown 0.1.4 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" "+45b14c26f76a39a9945ef8518d3276f1bc880008" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+45b14c26f76a39a9945ef8518d3276f1bc880008" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c77dc3a7f36a875b0775b382cfaadf7aaf1bcb9627941a6f32d47b214ebfc23
[INFO] running `Command { std: "docker" "start" "-a" "5c77dc3a7f36a875b0775b382cfaadf7aaf1bcb9627941a6f32d47b214ebfc23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c77dc3a7f36a875b0775b382cfaadf7aaf1bcb9627941a6f32d47b214ebfc23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c77dc3a7f36a875b0775b382cfaadf7aaf1bcb9627941a6f32d47b214ebfc23", kill_on_drop: false }`
[INFO] [stdout] 5c77dc3a7f36a875b0775b382cfaadf7aaf1bcb9627941a6f32d47b214ebfc23
[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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+45b14c26f76a39a9945ef8518d3276f1bc880008" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b09b04f1a4cdd5e7228281854f240bb3bd2a04c3a1f95c9ce01207c8f3fa432
[INFO] running `Command { std: "docker" "start" "-a" "9b09b04f1a4cdd5e7228281854f240bb3bd2a04c3a1f95c9ce01207c8f3fa432", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.138
[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 v1.0.105
[INFO] [stderr]    Compiling serde v1.0.149
[INFO] [stderr]    Compiling cc v1.0.77
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]     Checking lock_api v0.4.9
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]    Compiling openssl v0.10.44
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking futf v0.1.5
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]    Compiling io-lifetimes v1.0.3
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rustix v0.36.5
[INFO] [stderr]     Checking tendril v0.4.3
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking linux-raw-sys v0.1.3
[INFO] [stderr]     Checking os_str_bytes v6.4.1
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/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] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking clap_lex v0.3.0
[INFO] [stderr]     Checking ipnet v2.6.0
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9b09b04f1a4cdd5e7228281854f240bb3bd2a04c3a1f95c9ce01207c8f3fa432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b09b04f1a4cdd5e7228281854f240bb3bd2a04c3a1f95c9ce01207c8f3fa432", kill_on_drop: false }`
[INFO] [stdout] 9b09b04f1a4cdd5e7228281854f240bb3bd2a04c3a1f95c9ce01207c8f3fa432