[INFO] fetching crate pdf 0.8.1...
[INFO] checking pdf-0.8.1 against master#6162f6f12339aa81fe16b8a64644ead497e411b2 for pr-113242
[INFO] extracting crate pdf 0.8.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate pdf 0.8.1 on toolchain 6162f6f12339aa81fe16b8a64644ead497e411b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pdf 0.8.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate pdf 0.8.1
[INFO] tweaked toml for crates.io crate pdf 0.8.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate pdf 0.8.1 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" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memoffset v0.8.0
[INFO] [stderr]   Downloaded istring v0.3.3
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.14
[INFO] [stderr]   Downloaded globalcache v0.2.0
[INFO] [stderr]   Downloaded fax_derive v0.1.0
[INFO] [stderr]   Downloaded pdf_derive v0.1.22
[INFO] [stderr]   Downloaded datasize_derive v0.2.14
[INFO] [stderr]   Downloaded datasize v0.2.14
[INFO] [stderr]   Downloaded inflate v0.4.5
[INFO] [stderr]   Downloaded block-padding v0.3.3
[INFO] [stderr]   Downloaded deflate v1.0.0
[INFO] [stderr]   Downloaded fax v0.2.0
[INFO] [stderr]   Downloaded rustix v0.37.11
[INFO] [stderr]   Downloaded jpeg-decoder v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 200b38291a0e3e99826cda49c4428d385ec4a3738879d94975427cc8f50496db
[INFO] running `Command { std: "docker" "start" "-a" "200b38291a0e3e99826cda49c4428d385ec4a3738879d94975427cc8f50496db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "200b38291a0e3e99826cda49c4428d385ec4a3738879d94975427cc8f50496db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "200b38291a0e3e99826cda49c4428d385ec4a3738879d94975427cc8f50496db", kill_on_drop: false }`
[INFO] [stdout] 200b38291a0e3e99826cda49c4428d385ec4a3738879d94975427cc8f50496db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc40b9f11fe9575409ee5bdffd8d8b48bfa9fcbe3c3b61419d09fabc853c648d
[INFO] running `Command { std: "docker" "start" "-a" "cc40b9f11fe9575409ee5bdffd8d8b48bfa9fcbe3c3b61419d09fabc853c648d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking cpufeatures v0.2.6
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking weezl v0.1.7
[INFO] [stderr]     Checking jpeg-decoder v0.3.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]     Checking block-padding v0.3.3
[INFO] [stderr]     Checking digest v0.10.6
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.56/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 itertools v0.10.5
[INFO] [stderr]     Checking sha2 v0.10.6
[INFO] [stderr]     Checking cipher v0.4.4
[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] 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" "cc40b9f11fe9575409ee5bdffd8d8b48bfa9fcbe3c3b61419d09fabc853c648d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc40b9f11fe9575409ee5bdffd8d8b48bfa9fcbe3c3b61419d09fabc853c648d", kill_on_drop: false }`
[INFO] [stdout] cc40b9f11fe9575409ee5bdffd8d8b48bfa9fcbe3c3b61419d09fabc853c648d