[INFO] fetching crate lowcharts 0.5.8...
[INFO] checking lowcharts-0.5.8 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate lowcharts 0.5.8 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate lowcharts 0.5.8
[INFO] finished tweaking crates.io crate lowcharts 0.5.8
[INFO] tweaked toml for crates.io crate lowcharts 0.5.8 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lowcharts 0.5.8 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lowcharts 0.5.8 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded darling v0.14.2
[INFO] [stderr]   Downloaded simplelog v0.12.0
[INFO] [stderr]   Downloaded predicates-core v1.0.5
[INFO] [stderr]   Downloaded darling_macro v0.14.2
[INFO] [stderr]   Downloaded predicates-tree v1.0.7
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.86
[INFO] [stderr]   Downloaded float_eq v1.0.1
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.86
[INFO] [stderr]   Downloaded assert_cmd v2.0.8
[INFO] [stderr]   Downloaded cxx-build v1.0.86
[INFO] [stderr]   Downloaded darling_core v0.14.2
[INFO] [stderr]   Downloaded bstr v1.1.0
[INFO] [stderr]   Downloaded cxx v1.0.86
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ffa34e5dd5d8335544339755480869ee9757bdbd017e30e8e1db0222fb0d0de
[INFO] running `Command { std: "docker" "start" "-a" "0ffa34e5dd5d8335544339755480869ee9757bdbd017e30e8e1db0222fb0d0de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ffa34e5dd5d8335544339755480869ee9757bdbd017e30e8e1db0222fb0d0de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ffa34e5dd5d8335544339755480869ee9757bdbd017e30e8e1db0222fb0d0de", kill_on_drop: false }`
[INFO] [stdout] 0ffa34e5dd5d8335544339755480869ee9757bdbd017e30e8e1db0222fb0d0de
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81ed9a81f85874de36d642072fc15868727c1a297c1e50d5b88ceaa14dd77a90
[INFO] running `Command { std: "docker" "start" "-a" "81ed9a81f85874de36d642072fc15868727c1a297c1e50d5b88ceaa14dd77a90", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]     Checking once_cell v1.17.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]    Compiling time-macros v0.2.6
[INFO] [stdout] error[E0422]: cannot find struct, variant or union type `LineColumn` in crate `proc_macro`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.49/src/wrapper.rs:479:33
[INFO] [stdout]     |
[INFO] [stdout] 479 |                 let proc_macro::LineColumn { line, column } = s.start();
[INFO] [stdout]     |                                 ^^^^^^^^^^ not found in `proc_macro`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]     |
[INFO] [stdout]   1 + use crate::LineColumn;
[INFO] [stdout]     |
[INFO] [stdout]   1 + use crate::fallback::LineColumn;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `LineColumn`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 479 -                 let proc_macro::LineColumn { line, column } = s.start();
[INFO] [stdout] 479 +                 let LineColumn { line, column } = s.start();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0422]: cannot find struct, variant or union type `LineColumn` in crate `proc_macro`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.49/src/wrapper.rs:496:33
[INFO] [stdout]     |
[INFO] [stdout] 496 |                 let proc_macro::LineColumn { line, column } = s.end();
[INFO] [stdout]     |                                 ^^^^^^^^^^ not found in `proc_macro`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]     |
[INFO] [stdout]   1 + use crate::LineColumn;
[INFO] [stdout]     |
[INFO] [stdout]   1 + use crate::fallback::LineColumn;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `LineColumn`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 496 -                 let proc_macro::LineColumn { line, column } = s.end();
[INFO] [stdout] 496 +                 let LineColumn { line, column } = s.end();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.49/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 os_str_bytes v6.4.1
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking itoa v1.0.5
[INFO] [stdout] Some errors have detailed explanations: E0422, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0422`.
[INFO] [stdout] 
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "81ed9a81f85874de36d642072fc15868727c1a297c1e50d5b88ceaa14dd77a90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81ed9a81f85874de36d642072fc15868727c1a297c1e50d5b88ceaa14dd77a90", kill_on_drop: false }`
[INFO] [stdout] 81ed9a81f85874de36d642072fc15868727c1a297c1e50d5b88ceaa14dd77a90