[INFO] cloning repository https://github.com/sstadick/eztree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sstadick/eztree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsstadick%2Feztree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsstadick%2Feztree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7d63b6360a5df89f980646b15e2808e4bda3b4a3
[INFO] testing sstadick/eztree against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsstadick%2Feztree" "/workspace/builds/worker-22/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-22/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sstadick/eztree 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 git repo https://github.com/sstadick/eztree
[INFO] finished tweaking git repo https://github.com/sstadick/eztree
[INFO] tweaked toml for git repo https://github.com/sstadick/eztree written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] crate git repo https://github.com/sstadick/eztree 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]  Downloading crates ...
[INFO] [stderr]   Downloaded memchr v2.3.0
[INFO] [stderr]   Downloaded syn v1.0.14
[INFO] [stderr]   Downloaded bstr v0.2.11
[INFO] [stderr]   Downloaded multimap v0.6.0
[INFO] [stderr]   Downloaded backtrace v0.3.43
[INFO] [stderr]   Downloaded eytzinger v1.0.1
[INFO] [stderr]   Downloaded bio v0.30.0
[INFO] [stderr]   Downloaded bv v0.11.0
[INFO] [stderr]   Downloaded statrs v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] 0e1a1fb346f1ba6068bd0c4c968b65a7cb7b452c3714c16febbff97b081e83b0
[INFO] running `Command { std: "docker" "start" "-a" "0e1a1fb346f1ba6068bd0c4c968b65a7cb7b452c3714c16febbff97b081e83b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e1a1fb346f1ba6068bd0c4c968b65a7cb7b452c3714c16febbff97b081e83b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e1a1fb346f1ba6068bd0c4c968b65a7cb7b452c3714c16febbff97b081e83b0", kill_on_drop: false }`
[INFO] [stdout] 0e1a1fb346f1ba6068bd0c4c968b65a7cb7b452c3714c16febbff97b081e83b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] 02a3a1f2486c94b3e9b49196c130578b77f7336b798e9d49cc9b97d945dd5720
[INFO] running `Command { std: "docker" "start" "-a" "02a3a1f2486c94b3e9b49196c130578b77f7336b798e9d49cc9b97d945dd5720", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling feature-probe v0.1.1
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling bio v0.30.0
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling eytzinger v1.0.1
[INFO] [stderr]    Compiling strum v0.16.0
[INFO] [stderr]    Compiling ginterval v0.1.0 (/opt/rustwide/workdir/ginterval)
[INFO] [stderr]    Compiling bytecount v0.6.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling statrs v0.11.0
[INFO] [stderr]    Compiling matrixmultiply v0.2.3
[INFO] [stderr]    Compiling eztreelib v0.1.0 (/opt/rustwide/workdir/eztreelib)
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling bv v0.11.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> eztreelib/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core_intrinsics)]
[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 `eztreelib` 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" "02a3a1f2486c94b3e9b49196c130578b77f7336b798e9d49cc9b97d945dd5720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02a3a1f2486c94b3e9b49196c130578b77f7336b798e9d49cc9b97d945dd5720", kill_on_drop: false }`
[INFO] [stdout] 02a3a1f2486c94b3e9b49196c130578b77f7336b798e9d49cc9b97d945dd5720