[INFO] fetching crate xivar 0.5.1...
[INFO] testing xivar-0.5.1 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate xivar 0.5.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate xivar 0.5.1
[INFO] finished tweaking crates.io crate xivar 0.5.1
[INFO] tweaked toml for crates.io crate xivar 0.5.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xivar 0.5.1 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate xivar 0.5.1 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded winapi-wsapoll v0.1.1
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.85
[INFO] [stderr]   Downloaded pest_generator v2.5.2
[INFO] [stderr]   Downloaded sha1_smol v1.0.0
[INFO] [stderr]   Downloaded cc v1.0.78
[INFO] [stderr]   Downloaded cli-clipboard v0.4.0
[INFO] [stderr]   Downloaded fern v0.6.1
[INFO] [stderr]   Downloaded roxmltree v0.16.0
[INFO] [stderr]   Downloaded x11rb v0.10.1
[INFO] [stderr]   Downloaded str-buf v1.0.6
[INFO] [stderr]   Downloaded petgraph v0.6.2
[INFO] [stderr]   Downloaded wl-clipboard-rs v0.7.0
[INFO] [stderr]   Downloaded openssl v0.10.45
[INFO] [stderr]   Downloaded x11-clipboard v0.7.0
[INFO] [stderr]   Downloaded derive-new v0.5.9
[INFO] [stderr]   Downloaded tree_magic_mini v3.0.3
[INFO] [stderr]   Downloaded os_pipe v1.1.2
[INFO] [stderr]   Downloaded cxx v1.0.85
[INFO] [stderr]   Downloaded clap v4.0.32
[INFO] [stderr]   Downloaded pest_derive v2.5.2
[INFO] [stderr]   Downloaded x11rb-protocol v0.10.0
[INFO] [stderr]   Downloaded cxx-build v1.0.85
[INFO] [stderr]   Downloaded link-cplusplus v1.0.8
[INFO] [stderr]   Downloaded config v0.13.3
[INFO] [stderr]   Downloaded reqwest v0.11.13
[INFO] [stderr]   Downloaded open v3.2.0
[INFO] [stderr]   Downloaded ron v0.7.1
[INFO] [stderr]   Downloaded pest_meta v2.5.2
[INFO] [stderr]   Downloaded const_fn v0.4.9
[INFO] [stderr]   Downloaded redox_termios v0.1.2
[INFO] [stderr]   Downloaded nom v7.1.2
[INFO] [stderr]   Downloaded dlv-list v0.3.0
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.85
[INFO] [stderr]   Downloaded scratch v1.0.3
[INFO] [stderr]   Downloaded ordered-multimap v0.4.3
[INFO] [stderr]   Downloaded clipboard-win v4.4.2
[INFO] [stderr]   Downloaded rust-ini v0.18.0
[INFO] [stderr]   Downloaded console v0.15.4
[INFO] [stderr]   Downloaded flate2 v1.0.25
[INFO] [stderr]   Downloaded xmlparser v0.13.5
[INFO] [stderr]   Downloaded termion v2.0.1
[INFO] [stderr]   Downloaded tokio v1.24.0
[INFO] [stderr]   Downloaded toml v0.5.10
[INFO] [stderr]   Downloaded ipnet v2.7.0
[INFO] [stderr]   Downloaded lopdf v0.29.0
[INFO] [stderr]   Downloaded pest v2.5.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.49
[INFO] [stderr]   Downloaded pom v3.2.0
[INFO] [stderr]   Downloaded error-code v2.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3b3d114e22dd967dbe0a11f63c69c3d56f018e9066f7ea22c46b1762b326749
[INFO] running `Command { std: "docker" "start" "-a" "b3b3d114e22dd967dbe0a11f63c69c3d56f018e9066f7ea22c46b1762b326749", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3b3d114e22dd967dbe0a11f63c69c3d56f018e9066f7ea22c46b1762b326749", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3b3d114e22dd967dbe0a11f63c69c3d56f018e9066f7ea22c46b1762b326749", kill_on_drop: false }`
[INFO] [stdout] b3b3d114e22dd967dbe0a11f63c69c3d56f018e9066f7ea22c46b1762b326749
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bec893dad7ad36b4e070b65720c184289904f0179d80c64183789b5852a2702d
[INFO] running `Command { std: "docker" "start" "-a" "bec893dad7ad36b4e070b65720c184289904f0179d80c64183789b5852a2702d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling once_cell v1.17.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling cc v1.0.78
[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 parking_lot_core v0.9.5
[INFO] [stderr]    Compiling itoa v1.0.5
[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" "bec893dad7ad36b4e070b65720c184289904f0179d80c64183789b5852a2702d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bec893dad7ad36b4e070b65720c184289904f0179d80c64183789b5852a2702d", kill_on_drop: false }`
[INFO] [stdout] bec893dad7ad36b4e070b65720c184289904f0179d80c64183789b5852a2702d