[INFO] fetching crate embedded-nal-minimal-coaptcpserver 0.1.2...
[INFO] testing embedded-nal-minimal-coaptcpserver-0.1.2 against 1.75.0 for beta-1.76-1
[INFO] extracting crate embedded-nal-minimal-coaptcpserver 0.1.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate embedded-nal-minimal-coaptcpserver 0.1.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate embedded-nal-minimal-coaptcpserver 0.1.2
[INFO] finished tweaking crates.io crate embedded-nal-minimal-coaptcpserver 0.1.2
[INFO] tweaked toml for crates.io crate embedded-nal-minimal-coaptcpserver 0.1.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded coap-handler v0.1.5
[INFO] [stderr]   Downloaded coap-message v0.2.3
[INFO] [stderr]   Downloaded windowed-infinity v0.1.4
[INFO] [stderr]   Downloaded coap-message-utils v0.1.2
[INFO] [stderr]   Downloaded coap-numbers v0.1.2
[INFO] [stderr]   Downloaded embedded-nal-tcpextensions v0.1.2
[INFO] [stderr]   Downloaded embedded-io v0.4.0
[INFO] [stderr]   Downloaded coap-numbers v0.2.3
[INFO] [stderr]   Downloaded heapless v0.5.6
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebf596cf88b9b7fa7f23f743d72f17c427cb0d645d0654f5721af33684c70002
[INFO] running `Command { std: "docker" "start" "-a" "ebf596cf88b9b7fa7f23f743d72f17c427cb0d645d0654f5721af33684c70002", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebf596cf88b9b7fa7f23f743d72f17c427cb0d645d0654f5721af33684c70002", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebf596cf88b9b7fa7f23f743d72f17c427cb0d645d0654f5721af33684c70002", kill_on_drop: false }`
[INFO] [stdout] ebf596cf88b9b7fa7f23f743d72f17c427cb0d645d0654f5721af33684c70002
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e929de06e12031cd68eb6bee69afd878d6566f3988ed8dc1078b29e4194f4c4
[INFO] running `Command { std: "docker" "start" "-a" "1e929de06e12031cd68eb6bee69afd878d6566f3988ed8dc1078b29e4194f4c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.75
[INFO] [stderr]    Compiling semver v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling crc-catalog v2.4.0
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling coap-message v0.2.3
[INFO] [stderr]    Compiling no-std-net v0.5.0
[INFO] [stderr]    Compiling embedded-io v0.4.0
[INFO] [stderr]    Compiling crc v3.0.1
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling coap-numbers v0.2.3
[INFO] [stderr]    Compiling coap-numbers v0.1.2
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling generic-array v0.13.3
[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]    Compiling embedded-nal v0.6.0
[INFO] [stderr]    Compiling embedded-nal-tcpextensions v0.1.2
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling as-slice v0.1.5
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling coap-message-utils v0.1.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/coap-message-utils-0.1.2/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generic_associated_types)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `generic_associated_types` has been stable since `1.65.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `coap-message-utils` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1e929de06e12031cd68eb6bee69afd878d6566f3988ed8dc1078b29e4194f4c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e929de06e12031cd68eb6bee69afd878d6566f3988ed8dc1078b29e4194f4c4", kill_on_drop: false }`
[INFO] [stdout] 1e929de06e12031cd68eb6bee69afd878d6566f3988ed8dc1078b29e4194f4c4
