[INFO] cloning repository https://github.com/fmarinf/regression-models
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fmarinf/regression-models" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffmarinf%2Fregression-models", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffmarinf%2Fregression-models'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 303c2a31b6e9b0b46d9074d775345ee361e6b678
[INFO] checking fmarinf/regression-models against try#f77b5bc6c7c84df104f86b0dd01d9490e3923fa8 for pr-147834
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffmarinf%2Fregression-models" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/fmarinf/regression-models
[INFO] finished tweaking git repo https://github.com/fmarinf/regression-models
[INFO] tweaked toml for git repo https://github.com/fmarinf/regression-models written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/fmarinf/regression-models on toolchain f77b5bc6c7c84df104f86b0dd01d9490e3923fa8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/fmarinf/regression-models 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" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "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 openssl-sys v0.9.81
[INFO] [stderr]   Downloaded plotters-svg v0.3.3
[INFO] [stderr]   Downloaded ndarray-csv v0.3.1
[INFO] [stderr]   Downloaded plotters-backend v0.3.4
[INFO] [stderr]   Downloaded plotters-bitmap v0.3.2
[INFO] [stderr]   Downloaded itertools v0.7.11
[INFO] [stderr]   Downloaded curl v0.4.44
[INFO] [stderr]   Downloaded pest v2.5.6
[INFO] [stderr]   Downloaded plotters v0.3.4
[INFO] [stderr]   Downloaded ndarray v0.12.1
[INFO] [stderr]   Downloaded torch-sys v0.1.7
[INFO] [stderr]   Downloaded ndarray v0.13.1
[INFO] [stderr]   Downloaded tch v0.1.7
[INFO] [stderr]   Downloaded csv v1.2.1
[INFO] [stderr]   Downloaded curl-sys v0.4.60+curl-7.88.1
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69658f4bdc75177924bf8d9b23f20f87ec7611a85637751e59f93fa01d3607c0
[INFO] running `Command { std: "docker" "start" "-a" "69658f4bdc75177924bf8d9b23f20f87ec7611a85637751e59f93fa01d3607c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69658f4bdc75177924bf8d9b23f20f87ec7611a85637751e59f93fa01d3607c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69658f4bdc75177924bf8d9b23f20f87ec7611a85637751e59f93fa01d3607c0", kill_on_drop: false }`
[INFO] [stdout] 69658f4bdc75177924bf8d9b23f20f87ec7611a85637751e59f93fa01d3607c0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e136e8eb74d721de651290078f5cc0f7be26a9e0530020887748d58ba32a4753
[INFO] running `Command { std: "docker" "start" "-a" "e136e8eb74d721de651290078f5cc0f7be26a9e0530020887748d58ba32a4753", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling thiserror v1.0.39
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling openssl-sys v0.9.81
[INFO] [stderr]    Compiling libz-sys v1.1.8
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stderr]    Compiling curl-sys v0.4.60+curl-7.88.1
[INFO] [stderr]    Compiling miniz_oxide v0.6.2
[INFO] [stderr]    Compiling gimli v0.27.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling curl v0.4.44
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling freetype-sys v0.13.1
[INFO] [stderr]    Compiling yeslogic-fontconfig-sys v3.2.0
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.156
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling serde v1.0.156
[INFO] [stderr]    Compiling object v0.30.3
[INFO] [stderr]    Compiling rand v0.6.5
[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]     Checking plotters-backend v0.3.4
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling font-kit v0.11.0
[INFO] [stderr]     Checking bytemuck v1.13.1
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking const-cstr v0.3.0
[INFO] [stderr]    Compiling flate2 v1.0.25
[INFO] [stderr]     Checking weezl v0.1.7
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking jpeg-decoder v0.3.0
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_isaac v0.1.1
[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" "e136e8eb74d721de651290078f5cc0f7be26a9e0530020887748d58ba32a4753", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e136e8eb74d721de651290078f5cc0f7be26a9e0530020887748d58ba32a4753", kill_on_drop: false }`
[INFO] [stdout] e136e8eb74d721de651290078f5cc0f7be26a9e0530020887748d58ba32a4753