[INFO] fetching crate arkbot 0.3.0...
[INFO] checking arkbot-0.3.0 against master#b286722878e18db29a7fbe672be7c4d3b02e8e4d for pr-127655
[INFO] extracting crate arkbot 0.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate arkbot 0.3.0 on toolchain b286722878e18db29a7fbe672be7c4d3b02e8e4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arkbot 0.3.0
[INFO] finished tweaking crates.io crate arkbot 0.3.0
[INFO] tweaked toml for crates.io crate arkbot 0.3.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate arkbot 0.3.0 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" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num_cpus v1.13.1
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.19
[INFO] [stderr]   Downloaded ipnet v2.5.0
[INFO] [stderr]   Downloaded native-tls v0.2.10
[INFO] [stderr]   Downloaded cc v1.0.74
[INFO] [stderr]   Downloaded matches v0.1.9
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.92
[INFO] [stderr]   Downloaded link-cplusplus v1.0.8
[INFO] [stderr]   Downloaded num_threads v0.1.6
[INFO] [stderr]   Downloaded scratch v1.0.5
[INFO] [stderr]   Downloaded directories v4.0.1
[INFO] [stderr]   Downloaded bzip2 v0.4.3
[INFO] [stderr]   Downloaded toml v0.5.9
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.92
[INFO] [stderr]   Downloaded flate2 v1.0.24
[INFO] [stderr]   Downloaded cxx-build v1.0.92
[INFO] [stderr]   Downloaded quick-xml v0.26.0
[INFO] [stderr]   Downloaded pure-rust-locales v0.5.6
[INFO] [stderr]   Downloaded hyper v0.14.22
[INFO] [stderr]   Downloaded publicsuffix v2.2.3
[INFO] [stderr]   Downloaded cxx v1.0.92
[INFO] [stderr]   Downloaded chrono v0.4.24
[INFO] [stderr]   Downloaded time v0.3.16
[INFO] [stderr]   Downloaded regex v1.6.0
[INFO] [stderr]   Downloaded miniz_oxide v0.5.4
[INFO] [stderr]   Downloaded idna v0.2.3
[INFO] [stderr]   Downloaded regex-syntax v0.6.27
[INFO] [stderr]   Downloaded docopt v1.1.1
[INFO] [stderr]   Downloaded cookie v0.16.1
[INFO] [stderr]   Downloaded time-macros v0.2.5
[INFO] [stderr]   Downloaded time v0.1.45
[INFO] [stderr]   Downloaded cookie_store v0.16.1
[INFO] [stderr]   Downloaded confy v0.5.1
[INFO] [stderr]   Downloaded thiserror v1.0.37
[INFO] [stderr]   Downloaded thiserror-impl v1.0.37
[INFO] [stderr]   Downloaded directories-next v2.0.0
[INFO] [stderr]   Downloaded psl-types v2.0.11
[INFO] [stderr]   Downloaded bzip2-sys v0.1.11+1.0.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2acaacc1db0fe87006461964975429177ffbbd887f691893029311b391c28afc
[INFO] running `Command { std: "docker" "start" "-a" "2acaacc1db0fe87006461964975429177ffbbd887f691893029311b391c28afc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2acaacc1db0fe87006461964975429177ffbbd887f691893029311b391c28afc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2acaacc1db0fe87006461964975429177ffbbd887f691893029311b391c28afc", kill_on_drop: false }`
[INFO] [stdout] 2acaacc1db0fe87006461964975429177ffbbd887f691893029311b391c28afc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abf13c60db8346550d9661904734ec36a47a72520b2a2a51feb9c2fc78de0efd
[INFO] running `Command { std: "docker" "start" "-a" "abf13c60db8346550d9661904734ec36a47a72520b2a2a51feb9c2fc78de0efd", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling cc v1.0.74
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/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 serde_derive v1.0.147
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]    Compiling futures-core v0.3.25
[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" "abf13c60db8346550d9661904734ec36a47a72520b2a2a51feb9c2fc78de0efd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abf13c60db8346550d9661904734ec36a47a72520b2a2a51feb9c2fc78de0efd", kill_on_drop: false }`
[INFO] [stdout] abf13c60db8346550d9661904734ec36a47a72520b2a2a51feb9c2fc78de0efd
[INFO] checking arkbot-0.3.0 against try#6a5749073f2ebf59d7740d30e50a932a85756ee7 for pr-127655
[INFO] extracting crate arkbot 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate arkbot 0.3.0 on toolchain 6a5749073f2ebf59d7740d30e50a932a85756ee7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arkbot 0.3.0
[INFO] finished tweaking crates.io crate arkbot 0.3.0
[INFO] tweaked toml for crates.io crate arkbot 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate arkbot 0.3.0 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" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 312c994c39029dcebe9cc0c587e23472bb8ded0fa938b0f5ed70a2e82c9fc307
[INFO] running `Command { std: "docker" "start" "-a" "312c994c39029dcebe9cc0c587e23472bb8ded0fa938b0f5ed70a2e82c9fc307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "312c994c39029dcebe9cc0c587e23472bb8ded0fa938b0f5ed70a2e82c9fc307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "312c994c39029dcebe9cc0c587e23472bb8ded0fa938b0f5ed70a2e82c9fc307", kill_on_drop: false }`
[INFO] [stdout] 312c994c39029dcebe9cc0c587e23472bb8ded0fa938b0f5ed70a2e82c9fc307
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc6fe187003b30b56ea33ad774e709f1364f3935c4b39b7261004b4cde1ec247
[INFO] running `Command { std: "docker" "start" "-a" "cc6fe187003b30b56ea33ad774e709f1364f3935c4b39b7261004b4cde1ec247", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling cc v1.0.74
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking once_cell v1.16.0
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/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 bytes v1.2.1
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[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]     Checking tinyvec v1.6.0
[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" "cc6fe187003b30b56ea33ad774e709f1364f3935c4b39b7261004b4cde1ec247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc6fe187003b30b56ea33ad774e709f1364f3935c4b39b7261004b4cde1ec247", kill_on_drop: false }`
[INFO] [stdout] cc6fe187003b30b56ea33ad774e709f1364f3935c4b39b7261004b4cde1ec247
