[INFO] fetching crate mem-query 0.0.1...
[INFO] testing mem-query-0.0.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mem-query 0.0.1 into /workspace/builds/worker-113/source
[INFO] validating manifest of crates.io crate mem-query 0.0.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mem-query 0.0.1
[INFO] finished tweaking crates.io crate mem-query 0.0.1
[INFO] tweaked toml for crates.io crate mem-query 0.0.1 written to /workspace/builds/worker-113/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tylisp v0.1.0
[INFO] [stderr]   Downloaded typenum-uuid v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab3ed0e560e7f8fcbcb0c6b38312ddd4642fa69396de5550179a87067a1bce70
[INFO] running `Command { std: "docker" "start" "-a" "ab3ed0e560e7f8fcbcb0c6b38312ddd4642fa69396de5550179a87067a1bce70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab3ed0e560e7f8fcbcb0c6b38312ddd4642fa69396de5550179a87067a1bce70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab3ed0e560e7f8fcbcb0c6b38312ddd4642fa69396de5550179a87067a1bce70", kill_on_drop: false }`
[INFO] [stdout] ab3ed0e560e7f8fcbcb0c6b38312ddd4642fa69396de5550179a87067a1bce70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7ca9991709af24b5985714387b6e323bfbe8cd73ca7ccba8f644946ea640b71
[INFO] running `Command { std: "docker" "start" "-a" "a7ca9991709af24b5985714387b6e323bfbe8cd73ca7ccba8f644946ea640b71", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling typenum-uuid v0.1.0
[INFO] [stderr]    Compiling tylisp v0.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling mem-query v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![feature(min_type_alias_impl_trait)]
[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 `mem-query` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a7ca9991709af24b5985714387b6e323bfbe8cd73ca7ccba8f644946ea640b71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7ca9991709af24b5985714387b6e323bfbe8cd73ca7ccba8f644946ea640b71", kill_on_drop: false }`
[INFO] [stdout] a7ca9991709af24b5985714387b6e323bfbe8cd73ca7ccba8f644946ea640b71