[INFO] fetching crate automl 0.2.7...
[INFO] checking automl-0.2.7 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate automl 0.2.7 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate automl 0.2.7 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate automl 0.2.7
[INFO] finished tweaking crates.io crate automl 0.2.7
[INFO] tweaked toml for crates.io crate automl 0.2.7 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate automl 0.2.7 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" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_users v0.3.5
[INFO] [stderr]   Downloaded polars-lazy v0.17.0
[INFO] [stderr]   Downloaded hash_hasher v2.0.3
[INFO] [stderr]   Downloaded strength_reduce v0.2.4
[INFO] [stderr]   Downloaded polars-arrow v0.17.0
[INFO] [stderr]   Downloaded strum v0.23.0
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.86
[INFO] [stderr]   Downloaded serde v1.0.163
[INFO] [stderr]   Downloaded polars v0.17.0
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[INFO] [stderr]   Downloaded rust-argon2 v0.8.3
[INFO] [stderr]   Downloaded rustversion v1.0.12
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[INFO] [stderr]   Downloaded temp-file v0.1.7
[INFO] [stderr]   Downloaded dirs v3.0.2
[INFO] [stderr]   Downloaded polars-io v0.17.0
[INFO] [stderr]   Downloaded num v0.4.0
[INFO] [stderr]   Downloaded multiversion-macros v0.6.1
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.86
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[INFO] [stderr]   Downloaded lexical-core v0.8.5
[INFO] [stderr]   Downloaded log v0.4.18
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[INFO] [stderr]   Downloaded minreq v2.8.1
[INFO] [stderr]   Downloaded mio v0.8.7
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[INFO] [stderr]   Downloaded arrow2 v0.7.1
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[INFO] [stderr]   Downloaded crossterm v0.23.2
[INFO] [stderr]   Downloaded rand_distr v0.4.3
[INFO] [stderr]   Downloaded polars-core v0.17.0
[INFO] [stderr]   Downloaded chrono v0.4.25
[INFO] [stderr]   Downloaded lexical-write-float v0.8.5
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[INFO] [stderr]   Downloaded wasm-bindgen v0.2.86
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[INFO] [stderr]   Downloaded term v0.5.2
[INFO] [stderr]   Downloaded serde_yaml v0.8.26
[INFO] [stderr]   Downloaded lexical v6.1.1
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[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.86
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[INFO] [stderr]   Downloaded proc-macro2 v1.0.59
[INFO] [stderr]   Downloaded iana-time-zone v0.1.56
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[INFO] [stderr]   Downloaded multiversion v0.6.1
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[INFO] [stderr]   Downloaded matrixmultiply v0.3.7
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.14
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[INFO] [stderr]   Downloaded unsafe_unwrap v0.1.0
[INFO] [stderr]   Downloaded streaming-iterator v0.1.9
[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" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bbc736e38bce4445ff39cf8cc41b494483cbd39c48cfa80e11afd23b0b5cf7c6
[INFO] running `Command { std: "docker" "start" "-a" "bbc736e38bce4445ff39cf8cc41b494483cbd39c48cfa80e11afd23b0b5cf7c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbc736e38bce4445ff39cf8cc41b494483cbd39c48cfa80e11afd23b0b5cf7c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbc736e38bce4445ff39cf8cc41b494483cbd39c48cfa80e11afd23b0b5cf7c6", kill_on_drop: false }`
[INFO] [stdout] bbc736e38bce4445ff39cf8cc41b494483cbd39c48cfa80e11afd23b0b5cf7c6
[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" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bb6caa6552c2132b85ff0bcc6d90fb89f4ca072c33772ad4db4c9e9802b87bd
[INFO] running `Command { std: "docker" "start" "-a" "2bb6caa6552c2132b85ff0bcc6d90fb89f4ca072c33772ad4db4c9e9802b87bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling log v0.4.18
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling signal-hook v0.3.15
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.59/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 num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking smallvec v1.10.0
[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" "2bb6caa6552c2132b85ff0bcc6d90fb89f4ca072c33772ad4db4c9e9802b87bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bb6caa6552c2132b85ff0bcc6d90fb89f4ca072c33772ad4db4c9e9802b87bd", kill_on_drop: false }`
[INFO] [stdout] 2bb6caa6552c2132b85ff0bcc6d90fb89f4ca072c33772ad4db4c9e9802b87bd
