[INFO] fetching crate itsy-gitsy 0.5.0...
[INFO] checking itsy-gitsy-0.5.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate itsy-gitsy 0.5.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate itsy-gitsy 0.5.0
[INFO] finished tweaking crates.io crate itsy-gitsy 0.5.0
[INFO] tweaked toml for crates.io crate itsy-gitsy 0.5.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate itsy-gitsy 0.5.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate itsy-gitsy 0.5.0 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded phf v0.11.1
[INFO] [stderr]   Downloaded tera v1.17.1
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.86
[INFO] [stderr]   Downloaded phf_generator v0.11.1
[INFO] [stderr]   Downloaded phf_shared v0.11.1
[INFO] [stderr]   Downloaded pest_meta v2.5.2
[INFO] [stderr]   Downloaded open v3.2.0
[INFO] [stderr]   Downloaded fancy-regex v0.7.1
[INFO] [stderr]   Downloaded plist v1.3.1
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.86
[INFO] [stderr]   Downloaded pest v2.5.2
[INFO] [stderr]   Downloaded pulldown-cmark v0.9.2
[INFO] [stderr]   Downloaded ignore v0.4.19
[INFO] [stderr]   Downloaded phf_codegen v0.11.1
[INFO] [stderr]   Downloaded pest_generator v2.5.2
[INFO] [stderr]   Downloaded bstr v1.1.0
[INFO] [stderr]   Downloaded pest_derive v2.5.2
[INFO] [stderr]   Downloaded cxx-build v1.0.86
[INFO] [stderr]   Downloaded chrono-tz-build v0.0.3
[INFO] [stderr]   Downloaded git2 v0.15.0
[INFO] [stderr]   Downloaded cxx v1.0.86
[INFO] [stderr]   Downloaded chrono-tz v0.6.3
[INFO] [stderr]   Downloaded libgit2-sys v0.14.0+1.5.0
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] edf1b5513c9d1c63c3a548fda23a6e99eef046309eebdeac2505b90645ca2beb
[INFO] running `Command { std: "docker" "start" "-a" "edf1b5513c9d1c63c3a548fda23a6e99eef046309eebdeac2505b90645ca2beb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edf1b5513c9d1c63c3a548fda23a6e99eef046309eebdeac2505b90645ca2beb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edf1b5513c9d1c63c3a548fda23a6e99eef046309eebdeac2505b90645ca2beb", kill_on_drop: false }`
[INFO] [stdout] edf1b5513c9d1c63c3a548fda23a6e99eef046309eebdeac2505b90645ca2beb
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72a76ef9f16fb4404ffdd0136a8ad858e3edba0f5a54331616d27febbd77113f
[INFO] running `Command { std: "docker" "start" "-a" "72a76ef9f16fb4404ffdd0136a8ad858e3edba0f5a54331616d27febbd77113f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling siphasher v0.3.10
[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]    Compiling uncased v0.9.7
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling rand_core v0.6.4
[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 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "72a76ef9f16fb4404ffdd0136a8ad858e3edba0f5a54331616d27febbd77113f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72a76ef9f16fb4404ffdd0136a8ad858e3edba0f5a54331616d27febbd77113f", kill_on_drop: false }`
[INFO] [stdout] 72a76ef9f16fb4404ffdd0136a8ad858e3edba0f5a54331616d27febbd77113f