[INFO] fetching crate coap-message-demos 0.3.0...
[INFO] checking coap-message-demos-0.3.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate coap-message-demos 0.3.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate coap-message-demos 0.3.0 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate coap-message-demos 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate coap-message-demos 0.3.0
[INFO] tweaked toml for crates.io crate coap-message-demos 0.3.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate coap-message-demos 0.3.0 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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded std-embedded-nal v0.1.3
[INFO] [stderr]   Downloaded spin v0.9.5
[INFO] [stderr]   Downloaded embedded-nal v0.6.0
[INFO] [stderr]   Downloaded embedded-nal-tcpextensions v0.1.2
[INFO] [stderr]   Downloaded no-std-net v0.5.0
[INFO] [stderr]   Downloaded critical-section v1.1.1
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.11
[INFO] [stderr]   Downloaded coap-scroll-ring-server v0.1.0
[INFO] [stderr]   Downloaded build_const v0.2.2
[INFO] [stderr]   Downloaded as-slice v0.1.5
[INFO] [stderr]   Downloaded embedded-nal-minimal-coapserver v0.3.1
[INFO] [stderr]   Downloaded coap-message-utils v0.1.2
[INFO] [stderr]   Downloaded coap-message-utils v0.2.2
[INFO] [stderr]   Downloaded coap-message v0.2.3
[INFO] [stderr]   Downloaded coap-numbers v0.2.2
[INFO] [stderr]   Downloaded tokio-util v0.6.10
[INFO] [stderr]   Downloaded coap v0.11.3
[INFO] [stderr]   Downloaded coap-lite v0.7.0
[INFO] [stderr]   Downloaded minicbor v0.19.0
[INFO] [stderr]   Downloaded coap-handler v0.1.5
[INFO] [stderr]   Downloaded generic-array v0.13.3
[INFO] [stderr]   Downloaded heapless v0.5.6
[INFO] [stderr]   Downloaded embedded-nal-minimal-coaptcpserver v0.1.2
[INFO] [stderr]   Downloaded ringbuf v0.3.2
[INFO] [stderr]   Downloaded windowed-infinity v0.1.4
[INFO] [stderr]   Downloaded hash32 v0.1.1
[INFO] [stderr]   Downloaded scroll-ring v0.1.1
[INFO] [stderr]   Downloaded atomic-polyfill v1.0.1
[INFO] [stderr]   Downloaded coap-numbers v0.1.2
[INFO] [stderr]   Downloaded crc-catalog v2.2.0
[INFO] [stderr]   Downloaded static_cell v1.0.0
[INFO] [stderr]   Downloaded heapless v0.7.16
[INFO] [stderr]   Downloaded coap-handler-implementations v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7504e4d0d24288847b7ee06f137f7ee2ff2431397bee316049d6bbb221f2c43
[INFO] running `Command { std: "docker" "start" "-a" "b7504e4d0d24288847b7ee06f137f7ee2ff2431397bee316049d6bbb221f2c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7504e4d0d24288847b7ee06f137f7ee2ff2431397bee316049d6bbb221f2c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7504e4d0d24288847b7ee06f137f7ee2ff2431397bee316049d6bbb221f2c43", kill_on_drop: false }`
[INFO] [stdout] b7504e4d0d24288847b7ee06f137f7ee2ff2431397bee316049d6bbb221f2c43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a95aeb4820ace8ed036e9cd95ea5aff122f8eb236ce7741fc4e01c262a9b8de5
[INFO] running `Command { std: "docker" "start" "-a" "a95aeb4820ace8ed036e9cd95ea5aff122f8eb236ce7741fc4e01c262a9b8de5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling semver v1.0.16
[INFO] [stderr]    Compiling minicbor v0.19.0
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking crc-catalog v2.2.0
[INFO] [stderr]     Checking ciborium-io v0.2.0
[INFO] [stderr]     Checking embedded-io v0.4.0
[INFO] [stderr]     Checking coap-message v0.2.3
[INFO] [stderr]     Checking coap-numbers v0.2.2
[INFO] [stderr]     Checking spin v0.9.5
[INFO] [stderr]     Checking crc v3.0.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.51/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 crc v1.8.1
[INFO] [stdout] error: aborting due to 1 previous error
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a95aeb4820ace8ed036e9cd95ea5aff122f8eb236ce7741fc4e01c262a9b8de5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a95aeb4820ace8ed036e9cd95ea5aff122f8eb236ce7741fc4e01c262a9b8de5", kill_on_drop: false }`
[INFO] [stdout] a95aeb4820ace8ed036e9cd95ea5aff122f8eb236ce7741fc4e01c262a9b8de5
