[INFO] fetching crate kamikaze_di_derive 0.1.0...
[INFO] testing kamikaze_di_derive-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate kamikaze_di_derive 0.1.0 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate kamikaze_di_derive 0.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kamikaze_di_derive 0.1.0
[INFO] finished tweaking crates.io crate kamikaze_di_derive 0.1.0
[INFO] tweaked toml for crates.io crate kamikaze_di_derive 0.1.0 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded kamikaze_di v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3782c626ee8833aaff969190bea69f22542c76be2b057bda8f0071ef919aa05
[INFO] running `Command { std: "docker" "start" "-a" "e3782c626ee8833aaff969190bea69f22542c76be2b057bda8f0071ef919aa05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3782c626ee8833aaff969190bea69f22542c76be2b057bda8f0071ef919aa05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3782c626ee8833aaff969190bea69f22542c76be2b057bda8f0071ef919aa05", kill_on_drop: false }`
[INFO] [stdout] e3782c626ee8833aaff969190bea69f22542c76be2b057bda8f0071ef919aa05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2e34d3e5bf7ffc56e57670cf227b98a4219884b486f0bf98a8be23f90339129
[INFO] running `Command { std: "docker" "start" "-a" "a2e34d3e5bf7ffc56e57670cf227b98a4219884b486f0bf98a8be23f90339129", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling kamikaze_di_derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.80s
[INFO] running `Command { std: "docker" "inspect" "a2e34d3e5bf7ffc56e57670cf227b98a4219884b486f0bf98a8be23f90339129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2e34d3e5bf7ffc56e57670cf227b98a4219884b486f0bf98a8be23f90339129", kill_on_drop: false }`
[INFO] [stdout] a2e34d3e5bf7ffc56e57670cf227b98a4219884b486f0bf98a8be23f90339129
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d83dff1b9adfed13bf0833083739120410cd62fec473f861d0f6216304b2966
[INFO] running `Command { std: "docker" "start" "-a" "6d83dff1b9adfed13bf0833083739120410cd62fec473f861d0f6216304b2966", kill_on_drop: false }`
[INFO] [stderr]    Compiling kamikaze_di v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/kamikaze_di-0.1.0/src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | #![feature(specialization)]
[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 `kamikaze_di` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "6d83dff1b9adfed13bf0833083739120410cd62fec473f861d0f6216304b2966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d83dff1b9adfed13bf0833083739120410cd62fec473f861d0f6216304b2966", kill_on_drop: false }`
[INFO] [stdout] 6d83dff1b9adfed13bf0833083739120410cd62fec473f861d0f6216304b2966