[INFO] cloning repository https://github.com/obabec/rust-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/obabec/rust-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fobabec%2Frust-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fobabec%2Frust-examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15d657aca4888151a37808e860b1313fb6e5b883
[INFO] testing obabec/rust-examples against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fobabec%2Frust-examples" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/obabec/rust-examples on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/obabec/rust-examples
[INFO] finished tweaking git repo https://github.com/obabec/rust-examples
[INFO] tweaked toml for git repo https://github.com/obabec/rust-examples written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/obabec/rust-examples already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bdd011733ebdec512ef41b10ac19acbeb19e5ba5da764f91daeb086fe663ef4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1bdd011733ebdec512ef41b10ac19acbeb19e5ba5da764f91daeb086fe663ef4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bdd011733ebdec512ef41b10ac19acbeb19e5ba5da764f91daeb086fe663ef4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bdd011733ebdec512ef41b10ac19acbeb19e5ba5da764f91daeb086fe663ef4", kill_on_drop: false }`
[INFO] [stdout] 1bdd011733ebdec512ef41b10ac19acbeb19e5ba5da764f91daeb086fe663ef4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 26669ac5b9c88fc15b9b6315280a3d6f6ef16f3cc232778dc6a94e20220a3cf9
[INFO] running `Command { std: "docker" "start" "-a" "26669ac5b9c88fc15b9b6315280a3d6f6ef16f3cc232778dc6a94e20220a3cf9", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling defmt v0.3.0
[INFO] [stderr]    Compiling defmt-macros v0.3.1
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling defmt-parser v0.3.0
[INFO] [stderr]    Compiling futures-sink v0.3.19
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]    Compiling critical-section v0.2.5
[INFO] [stderr]    Compiling serde_json v1.0.78
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling libc v0.2.116
[INFO] [stderr]    Compiling heapless v0.7.10
[INFO] [stderr]    Compiling futures-io v0.3.19
[INFO] [stderr]    Compiling bare-metal v1.0.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling embassy v0.1.0 (https://github.com/embassy-rs/embassy.git?rev=d76cd5ceaf5140c48ef97180beae156c0c0e07c8#d76cd5ce)
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling embedded-hal v1.0.0-alpha.6 (https://github.com/embassy-rs/embedded-hal?branch=embassy#1fa64a1d)
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling darling_core v0.13.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling riscv-target v0.1.2
[INFO] [stderr]    Compiling pin-project v1.0.10
[INFO] [stderr]    Compiling embedded-hal v0.2.6
[INFO] [stderr]    Compiling serde-hjson v0.9.1
[INFO] [stderr]    Compiling embedded-hal-async v0.0.1 (https://github.com/embassy-rs/embedded-hal?branch=embassy#1fa64a1d)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/embedded-hal-3cdc78ba8107c578/1fa64a1/embedded-hal-async/src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(generic_associated_types)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 `embedded-hal-async` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "26669ac5b9c88fc15b9b6315280a3d6f6ef16f3cc232778dc6a94e20220a3cf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26669ac5b9c88fc15b9b6315280a3d6f6ef16f3cc232778dc6a94e20220a3cf9", kill_on_drop: false }`
[INFO] [stdout] 26669ac5b9c88fc15b9b6315280a3d6f6ef16f3cc232778dc6a94e20220a3cf9