[INFO] fetching crate udp_traffic_generator 0.2.0...
[INFO] building udp_traffic_generator-0.2.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate udp_traffic_generator 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate udp_traffic_generator 0.2.0
[INFO] finished tweaking crates.io crate udp_traffic_generator 0.2.0
[INFO] tweaked toml for crates.io crate udp_traffic_generator 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate udp_traffic_generator 0.2.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate udp_traffic_generator 0.2.0 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded utf8-width v0.1.6
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.86
[INFO] [stderr]   Downloaded tokio-openssl v0.6.3
[INFO] [stderr]   Downloaded mimalloc v0.1.37
[INFO] [stderr]   Downloaded proc-macro2 v1.0.58
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.86
[INFO] [stderr]   Downloaded time-core v0.1.1
[INFO] [stderr]   Downloaded syn v2.0.16
[INFO] [stderr]   Downloaded clap v4.3.0
[INFO] [stderr]   Downloaded byte-unit v4.0.19
[INFO] [stderr]   Downloaded anstream v0.3.2
[INFO] [stderr]   Downloaded rustix v0.37.19
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.86
[INFO] [stderr]   Downloaded derive-new v0.5.9
[INFO] [stderr]   Downloaded time-macros v0.2.9
[INFO] [stderr]   Downloaded coarsetime v0.1.23
[INFO] [stderr]   Downloaded clap_builder v4.3.0
[INFO] [stderr]   Downloaded num_threads v0.1.6
[INFO] [stderr]   Downloaded tokio v1.28.1
[INFO] [stderr]   Downloaded clap_lex v0.5.0
[INFO] [stderr]   Downloaded bumpalo v3.13.0
[INFO] [stderr]   Downloaded serde v1.0.163
[INFO] [stderr]   Downloaded quote v1.0.27
[INFO] [stderr]   Downloaded tokio-dtls-stream-sink v0.6.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.86
[INFO] [stderr]   Downloaded kanal v0.1.0-pre8
[INFO] [stderr]   Downloaded libc v0.2.144
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.86
[INFO] [stderr]   Downloaded simple_logger v4.1.0
[INFO] [stderr]   Downloaded pkg-config v0.3.27
[INFO] [stderr]   Downloaded libmimalloc-sys v0.1.33
[INFO] [stderr]   Downloaded time v0.3.21
[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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bfc0fdf35e830e9ab3ca4c1a9fc70a4b1d18117927d23c3f8e0f6832aa37b0b
[INFO] running `Command { std: "docker" "start" "-a" "4bfc0fdf35e830e9ab3ca4c1a9fc70a4b1d18117927d23c3f8e0f6832aa37b0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bfc0fdf35e830e9ab3ca4c1a9fc70a4b1d18117927d23c3f8e0f6832aa37b0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bfc0fdf35e830e9ab3ca4c1a9fc70a4b1d18117927d23c3f8e0f6832aa37b0b", kill_on_drop: false }`
[INFO] [stdout] 4bfc0fdf35e830e9ab3ca4c1a9fc70a4b1d18117927d23c3f8e0f6832aa37b0b
[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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f730327c432fb3129575b15179acc25f087934ea3b6da5c062b2473c077f36e2
[INFO] running `Command { std: "docker" "start" "-a" "f730327c432fb3129575b15179acc25f087934ea3b6da5c062b2473c077f36e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling proc-macro2 v1.0.58
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling openssl-src v111.25.3+1.1.1t
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling futures-sink v0.3.28
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]    Compiling tokio v1.28.1
[INFO] [stderr]    Compiling futures-io v0.3.28
[INFO] [stderr]    Compiling openssl v0.10.52
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling tracing-core v0.1.31
[INFO] [stderr]    Compiling anstyle-parse v0.2.0
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.33
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.58/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 anstyle v1.0.0
[INFO] [stderr]    Compiling time-core v0.1.1
[INFO] [stderr]    Compiling tokio-openssl v0.6.3
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling time-macros v0.2.9
[INFO] [stderr]    Compiling num_threads v0.1.6
[INFO] [stderr]    Compiling clap_lex v0.5.0
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling utf8-width v0.1.6
[INFO] [stderr]    Compiling kanal v0.1.0-pre8
[INFO] [stderr]    Compiling openssl-sys v0.9.87
[INFO] [stderr]    Compiling tracing v0.1.37
[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" "f730327c432fb3129575b15179acc25f087934ea3b6da5c062b2473c077f36e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f730327c432fb3129575b15179acc25f087934ea3b6da5c062b2473c077f36e2", kill_on_drop: false }`
[INFO] [stdout] f730327c432fb3129575b15179acc25f087934ea3b6da5c062b2473c077f36e2