[INFO] fetching crate cargo-xdk 2.12.6...
[INFO] testing cargo-xdk-2.12.6 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate cargo-xdk 2.12.6 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate cargo-xdk 2.12.6
[INFO] finished tweaking crates.io crate cargo-xdk 2.12.6
[INFO] tweaked toml for crates.io crate cargo-xdk 2.12.6 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cargo-xdk 2.12.6 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cargo-xdk 2.12.6 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.6
[INFO] [stderr]   Downloaded serde_derive v1.0.152
[INFO] [stderr]   Downloaded thiserror v1.0.38
[INFO] [stderr]   Downloaded camino v1.1.2
[INFO] [stderr]   Downloaded semver v1.0.16
[INFO] [stderr]   Downloaded ryu v1.0.12
[INFO] [stderr]   Downloaded proc-macro2 v1.0.50
[INFO] [stderr]   Downloaded serde v1.0.152
[INFO] [stderr]   Downloaded termcolor v1.2.0
[INFO] [stderr]   Downloaded fruity__bbqsrc v0.2.0
[INFO] [stderr]   Downloaded gumdrop_derive v0.8.1
[INFO] [stderr]   Downloaded serde_json v1.0.91
[INFO] [stderr]   Downloaded syn v1.0.107
[INFO] [stderr]   Downloaded gumdrop v0.8.1
[INFO] [stderr]   Downloaded malloced v1.1.0
[INFO] [stderr]   Downloaded pct-str v1.1.0
[INFO] [stderr]   Downloaded regex v1.7.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.28
[INFO] [stderr]   Downloaded iref v1.4.3
[INFO] [stderr]   Downloaded once_cell v1.17.0
[INFO] [stderr]   Downloaded os_str_bytes v2.4.0
[INFO] [stderr]   Downloaded thiserror-impl v1.0.38
[INFO] [stderr]   Downloaded cargo-platform v0.1.2
[INFO] [stderr]   Downloaded itoa v1.0.5
[INFO] [stderr]   Downloaded cargo_metadata v0.15.2
[INFO] [stderr]   Downloaded eieio v1.0.0
[INFO] [stderr]   Downloaded quote v1.0.23
[INFO] [stderr]   Downloaded windirs v1.0.1
[INFO] [stderr]   Downloaded pathos v0.3.0
[INFO] [stderr]   Downloaded libc v0.2.139
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5202c0172b1d8f7089751cf7a78d74833ba5b56df63c9c65f5d64c49134cb5e6
[INFO] running `Command { std: "docker" "start" "-a" "5202c0172b1d8f7089751cf7a78d74833ba5b56df63c9c65f5d64c49134cb5e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5202c0172b1d8f7089751cf7a78d74833ba5b56df63c9c65f5d64c49134cb5e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5202c0172b1d8f7089751cf7a78d74833ba5b56df63c9c65f5d64c49134cb5e6", kill_on_drop: false }`
[INFO] [stdout] 5202c0172b1d8f7089751cf7a78d74833ba5b56df63c9c65f5d64c49134cb5e6
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0a9c67baa86cc0e2619e3acf6f5d6ca1b64759bdbdf5642350f2d6e67e024f4
[INFO] running `Command { std: "docker" "start" "-a" "a0a9c67baa86cc0e2619e3acf6f5d6ca1b64759bdbdf5642350f2d6e67e024f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling camino v1.1.2
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]    Compiling semver v1.0.16
[INFO] [stderr]    Compiling itoa v1.0.5
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling ryu v1.0.12
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling pct-str v1.1.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling os_str_bytes v2.4.0
[INFO] [stderr]    Compiling once_cell v1.17.0
[INFO] [stderr]    Compiling termcolor v1.2.0
[INFO] [stderr]    Compiling eieio v1.0.0
[INFO] [stderr]    Compiling iref v1.4.3
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/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] [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" "a0a9c67baa86cc0e2619e3acf6f5d6ca1b64759bdbdf5642350f2d6e67e024f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0a9c67baa86cc0e2619e3acf6f5d6ca1b64759bdbdf5642350f2d6e67e024f4", kill_on_drop: false }`
[INFO] [stdout] a0a9c67baa86cc0e2619e3acf6f5d6ca1b64759bdbdf5642350f2d6e67e024f4