[INFO] fetching crate klucznik 0.1.2...
[INFO] checking klucznik-0.1.2 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate klucznik 0.1.2 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate klucznik 0.1.2
[INFO] finished tweaking crates.io crate klucznik 0.1.2
[INFO] tweaked toml for crates.io crate klucznik 0.1.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate klucznik 0.1.2 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 klucznik 0.1.2 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 is-terminal v0.4.0
[INFO] [stderr]   Downloaded sha256 v1.1.1
[INFO] [stderr]   Downloaded io-lifetimes v1.0.2
[INFO] [stderr]   Downloaded ureq v2.5.0
[INFO] [stderr]   Downloaded webpki-roots v0.22.5
[INFO] [stderr]   Downloaded clap v4.0.27
[INFO] [stderr]   Downloaded rustix v0.36.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 45b97dcdf05d906a7c697144acfe42d7bddb8ffa641c7f57752b0b2253bc7172
[INFO] running `Command { std: "docker" "start" "-a" "45b97dcdf05d906a7c697144acfe42d7bddb8ffa641c7f57752b0b2253bc7172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45b97dcdf05d906a7c697144acfe42d7bddb8ffa641c7f57752b0b2253bc7172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45b97dcdf05d906a7c697144acfe42d7bddb8ffa641c7f57752b0b2253bc7172", kill_on_drop: false }`
[INFO] [stdout] 45b97dcdf05d906a7c697144acfe42d7bddb8ffa641c7f57752b0b2253bc7172
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 67ac4379d2cedc6bf41d8e8468dd0f0f03f0cdc1fefe880bbb3892f22f343998
[INFO] running `Command { std: "docker" "start" "-a" "67ac4379d2cedc6bf41d8e8468dd0f0f03f0cdc1fefe880bbb3892f22f343998", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling cc v1.0.77
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking once_cell v1.16.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling io-lifetimes v1.0.2
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling rustix v0.36.3
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]    Compiling rustls v0.20.7
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking linux-raw-sys v0.1.3
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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 opaque-debug v0.3.0
[INFO] [stderr]     Checking os_str_bytes v6.4.1
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]     Checking strsim v0.10.0
[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" "67ac4379d2cedc6bf41d8e8468dd0f0f03f0cdc1fefe880bbb3892f22f343998", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67ac4379d2cedc6bf41d8e8468dd0f0f03f0cdc1fefe880bbb3892f22f343998", kill_on_drop: false }`
[INFO] [stdout] 67ac4379d2cedc6bf41d8e8468dd0f0f03f0cdc1fefe880bbb3892f22f343998