[INFO] fetching crate javawithrust 0.2.0...
[INFO] checking javawithrust-0.2.0 against 1.95.0 for pr-155915
[INFO] extracting crate javawithrust 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate javawithrust 0.2.0
[INFO] finished tweaking crates.io crate javawithrust 0.2.0
[INFO] tweaked toml for crates.io crate javawithrust 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate javawithrust 0.2.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 47 packages to latest compatible versions
[INFO] [stderr]       Adding j4rs v0.13.0 (available: v0.25.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded j4rs_derive v0.1.1
[INFO] [stderr]   Downloaded libloading v0.6.7
[INFO] [stderr]   Downloaded java-locator v0.1.9
[INFO] [stderr]   Downloaded javawithrust_macro v0.2.0
[INFO] [stderr]   Downloaded j4rs v0.13.0
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c926e25b54e6315cc31c2a65a2dd89823ac5b78b5e8a8b511ffe81d0735b5f6
[INFO] running `Command { std: "docker" "start" "-a" "2c926e25b54e6315cc31c2a65a2dd89823ac5b78b5e8a8b511ffe81d0735b5f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c926e25b54e6315cc31c2a65a2dd89823ac5b78b5e8a8b511ffe81d0735b5f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c926e25b54e6315cc31c2a65a2dd89823ac5b78b5e8a8b511ffe81d0735b5f6", kill_on_drop: false }`
[INFO] [stdout] 2c926e25b54e6315cc31c2a65a2dd89823ac5b78b5e8a8b511ffe81d0735b5f6
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de79f1ba8c80d730f92a8ae2bedd637ae06b3ad36624464900d035b98e5e3329
[INFO] running `Command { std: "docker" "start" "-a" "de79f1ba8c80d730f92a8ae2bedd637ae06b3ad36624464900d035b98e5e3329", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.20.0
[INFO] [stderr]    Compiling jni-sys v0.3.1
[INFO] [stderr]    Compiling java-locator v0.1.9
[INFO] [stderr]    Compiling generic-array v0.14.9
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]     Checking fs_extra v1.3.0
[INFO] [stderr]    Compiling dirs-sys v0.3.7
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling jni-sys-macros v0.4.1
[INFO] [stderr]    Compiling j4rs_derive v0.1.1
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]     Checking jni-sys v0.4.1
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling sha2 v0.9.9
[INFO] [stderr]    Compiling j4rs v0.13.0
[INFO] [stderr]    Compiling javawithrust_macro v0.2.0
[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-1949cf8c6b5b557f/javawithrust_macro-0.2.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_expand)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `javawithrust_macro` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "de79f1ba8c80d730f92a8ae2bedd637ae06b3ad36624464900d035b98e5e3329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de79f1ba8c80d730f92a8ae2bedd637ae06b3ad36624464900d035b98e5e3329", kill_on_drop: false }`
[INFO] [stdout] de79f1ba8c80d730f92a8ae2bedd637ae06b3ad36624464900d035b98e5e3329
