[INFO] fetching crate latke 0.0.0...
[INFO] testing latke-0.0.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate latke 0.0.0 into /workspace/builds/worker-34/source
[INFO] validating manifest of crates.io crate latke 0.0.0 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] removed /workspace/builds/worker-34/source/.cargo/config
[INFO] started tweaking crates.io crate latke 0.0.0
[INFO] finished tweaking crates.io crate latke 0.0.0
[INFO] tweaked toml for crates.io crate latke 0.0.0 written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] crate crates.io crate latke 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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 clap_derive v3.0.0-rc.4
[INFO] [stderr]   Downloaded sha2 v0.10.0
[INFO] [stderr]   Downloaded clap v3.0.0-rc.4
[INFO] [stderr]   Downloaded dashmap v5.0.0
[INFO] [stderr]   Downloaded digest v0.10.0
[INFO] [stderr]   Downloaded crypto-common v0.1.0
[INFO] [stderr]   Downloaded dispose-derive v0.3.0
[INFO] [stderr]   Downloaded dispose v0.4.0
[INFO] [stderr]   Downloaded topograph v0.2.0-alpha.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] 5c718bfc6bb101c061d9267f336848a30995af91a8e39ce47649b2cd08817c91
[INFO] running `Command { std: "docker" "start" "-a" "5c718bfc6bb101c061d9267f336848a30995af91a8e39ce47649b2cd08817c91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c718bfc6bb101c061d9267f336848a30995af91a8e39ce47649b2cd08817c91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c718bfc6bb101c061d9267f336848a30995af91a8e39ce47649b2cd08817c91", kill_on_drop: false }`
[INFO] [stdout] 5c718bfc6bb101c061d9267f336848a30995af91a8e39ce47649b2cd08817c91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] 86f74c727ac8769fa6f742fca3bc29733a86104e17560437c3c496498de92ac8
[INFO] running `Command { std: "docker" "start" "-a" "86f74c727ac8769fa6f742fca3bc29733a86104e17560437c3c496498de92ac8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling anyhow v1.0.51
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling crossbeam v0.8.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling dashmap v5.0.0
[INFO] [stderr]    Compiling crypto-common v0.1.0
[INFO] [stderr]    Compiling block-buffer v0.10.0
[INFO] [stderr]    Compiling digest v0.10.0
[INFO] [stderr]    Compiling sha2 v0.10.0
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling dispose-derive v0.3.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-rc.4
[INFO] [stderr]    Compiling clap v3.0.0-rc.4
[INFO] [stderr]    Compiling dispose v0.4.0
[INFO] [stderr]    Compiling topograph v0.2.0-alpha.1
[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/topograph-0.2.0-alpha.1/src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![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 `topograph` 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" "86f74c727ac8769fa6f742fca3bc29733a86104e17560437c3c496498de92ac8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86f74c727ac8769fa6f742fca3bc29733a86104e17560437c3c496498de92ac8", kill_on_drop: false }`
[INFO] [stdout] 86f74c727ac8769fa6f742fca3bc29733a86104e17560437c3c496498de92ac8