[INFO] fetching crate oasis-rpc 0.4.0...
[INFO] testing oasis-rpc-0.4.0 against 1.69.0 for beta-1.70-1
[INFO] extracting crate oasis-rpc 0.4.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate oasis-rpc 0.4.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate oasis-rpc 0.4.0
[INFO] finished tweaking crates.io crate oasis-rpc 0.4.0
[INFO] tweaked toml for crates.io crate oasis-rpc 0.4.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libflate v0.1.27
[INFO] [stderr]   Downloaded wasmparser v0.42.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 697c5e4b2b007d81cae7e407399762011e7f8f9adb86ccea6a2679c81e8a5ee6
[INFO] running `Command { std: "docker" "start" "-a" "697c5e4b2b007d81cae7e407399762011e7f8f9adb86ccea6a2679c81e8a5ee6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "697c5e4b2b007d81cae7e407399762011e7f8f9adb86ccea6a2679c81e8a5ee6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "697c5e4b2b007d81cae7e407399762011e7f8f9adb86ccea6a2679c81e8a5ee6", kill_on_drop: false }`
[INFO] [stdout] 697c5e4b2b007d81cae7e407399762011e7f8f9adb86ccea6a2679c81e8a5ee6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0ad9c6c6234050a80d2883c8a1cd9c203f767155a9cfa71fff843557fab59bc
[INFO] running `Command { std: "docker" "start" "-a" "d0ad9c6c6234050a80d2883c8a1cd9c203f767155a9cfa71fff843557fab59bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling oasis-rpc v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax)]
[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 `oasis-rpc` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d0ad9c6c6234050a80d2883c8a1cd9c203f767155a9cfa71fff843557fab59bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0ad9c6c6234050a80d2883c8a1cd9c203f767155a9cfa71fff843557fab59bc", kill_on_drop: false }`
[INFO] [stdout] d0ad9c6c6234050a80d2883c8a1cd9c203f767155a9cfa71fff843557fab59bc
