[INFO] fetching crate fuga-json-seq-parser 0.2.0...
[INFO] checking fuga-json-seq-parser-0.2.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate fuga-json-seq-parser 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate fuga-json-seq-parser 0.2.0 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate fuga-json-seq-parser 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate fuga-json-seq-parser 0.2.0
[INFO] tweaked toml for crates.io crate fuga-json-seq-parser 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate fuga-json-seq-parser 0.2.0 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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-io v0.3.27
[INFO] [stderr]   Downloaded spin v0.9.6
[INFO] [stderr]   Downloaded futures-sink v0.3.27
[INFO] [stderr]   Downloaded futures-task v0.3.27
[INFO] [stderr]   Downloaded futures-core v0.3.27
[INFO] [stderr]   Downloaded futures-util v0.3.27
[INFO] [stderr]   Downloaded futures-channel v0.3.27
[INFO] [stderr]   Downloaded futures v0.3.27
[INFO] [stderr]   Downloaded embedded-io v0.3.1
[INFO] [stderr]   Downloaded critical-section v1.1.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d9c88537e7088833ae1a512e64fc42448b4babc2c68ffb04172cccb675ea70d
[INFO] running `Command { std: "docker" "start" "-a" "9d9c88537e7088833ae1a512e64fc42448b4babc2c68ffb04172cccb675ea70d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d9c88537e7088833ae1a512e64fc42448b4babc2c68ffb04172cccb675ea70d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d9c88537e7088833ae1a512e64fc42448b4babc2c68ffb04172cccb675ea70d", kill_on_drop: false }`
[INFO] [stdout] 9d9c88537e7088833ae1a512e64fc42448b4babc2c68ffb04172cccb675ea70d
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cce25d9e13e0c20825b84f70e210b5a2fa50893ef04259c2d8cd613568e9ac56
[INFO] running `Command { std: "docker" "start" "-a" "cce25d9e13e0c20825b84f70e210b5a2fa50893ef04259c2d8cd613568e9ac56", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.53
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]     Checking lock_api v0.4.9
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking embedded-io v0.3.1
[INFO] [stderr]     Checking uuid v1.3.0
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking spin v0.9.6
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.53/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 heapless v0.7.16
[INFO] [stdout] error: aborting due to 1 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" "cce25d9e13e0c20825b84f70e210b5a2fa50893ef04259c2d8cd613568e9ac56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cce25d9e13e0c20825b84f70e210b5a2fa50893ef04259c2d8cd613568e9ac56", kill_on_drop: false }`
[INFO] [stdout] cce25d9e13e0c20825b84f70e210b5a2fa50893ef04259c2d8cd613568e9ac56
