[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 beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsstadick%2Feztree" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sstadick/eztree on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-5/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" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aho-corasick v0.7.8
[INFO] [stderr]   Downloaded bit-vec v0.5.1
[INFO] [stderr]   Downloaded approx v0.3.2
[INFO] [stderr]   Downloaded strum v0.16.0
[INFO] [stderr]   Downloaded regex-automata v0.1.8
[INFO] [stderr]   Downloaded bytecount v0.6.0
[INFO] [stderr]   Downloaded multimap v0.6.0
[INFO] [stderr]   Downloaded itertools-num v0.1.3
[INFO] [stderr]   Downloaded fxhash v0.2.1
[INFO] [stderr]   Downloaded bv v0.11.0
[INFO] [stderr]   Downloaded bit-set v0.5.1
[INFO] [stderr]   Downloaded csv v1.1.3
[INFO] [stderr]   Downloaded fixedbitset v0.1.9
[INFO] [stderr]   Downloaded feature-probe v0.1.1
[INFO] [stderr]   Downloaded csv-core v0.1.6
[INFO] [stderr]   Downloaded ndarray v0.13.0
[INFO] [stderr]   Downloaded num-complex v0.2.4
[INFO] [stderr]   Downloaded petgraph v0.4.13
[INFO] [stderr]   Downloaded memchr v2.3.0
[INFO] [stderr]   Downloaded syn v1.0.14
[INFO] [stderr]   Downloaded matrixmultiply v0.2.3
[INFO] [stderr]   Downloaded regex v1.3.4
[INFO] [stderr]   Downloaded getset v0.0.9
[INFO] [stderr]   Downloaded ordermap v0.3.5
[INFO] [stderr]   Downloaded proc-macro2 v1.0.8
[INFO] [stderr]   Downloaded rawpointer v0.2.1
[INFO] [stderr]   Downloaded backtrace v0.3.43
[INFO] [stderr]   Downloaded regex-syntax v0.6.14
[INFO] [stderr]   Downloaded cc v1.0.50
[INFO] [stderr]   Downloaded strum_macros v0.16.0
[INFO] [stderr]   Downloaded statrs v0.11.0
[INFO] [stderr]   Downloaded bstr v0.2.11
[INFO] [stderr]   Downloaded eytzinger v1.0.1
[INFO] [stderr]   Downloaded bio v0.30.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c364f9e75a0ee3119eba46f1f7d93d083146b763f23f9d359fa238308c7f4b97
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c364f9e75a0ee3119eba46f1f7d93d083146b763f23f9d359fa238308c7f4b97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c364f9e75a0ee3119eba46f1f7d93d083146b763f23f9d359fa238308c7f4b97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c364f9e75a0ee3119eba46f1f7d93d083146b763f23f9d359fa238308c7f4b97", kill_on_drop: false }`
[INFO] [stdout] c364f9e75a0ee3119eba46f1f7d93d083146b763f23f9d359fa238308c7f4b97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c53ba5e06a1029c6b8fed8e2ea7fd7a06f8a528f5d032f6183bf8315397b8f5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6c53ba5e06a1029c6b8fed8e2ea7fd7a06f8a528f5d032f6183bf8315397b8f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling feature-probe v0.1.1
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]    Compiling bio v0.30.0
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling strum v0.16.0
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling ginterval v0.1.0 (/opt/rustwide/workdir/ginterval)
[INFO] [stderr]    Compiling eytzinger v1.0.1
[INFO] [stderr]    Compiling bytecount v0.6.0
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling itertools-num v0.1.3
[INFO] [stderr]    Compiling backtrace v0.3.43
[INFO] [stderr]    Compiling snafu-derive v0.5.0
[INFO] [stderr]    Compiling eztreelib v0.1.0 (/opt/rustwide/workdir/eztreelib)
[INFO] [stderr]    Compiling statrs v0.11.0
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> eztreelib/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core_intrinsics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bv v0.11.0
[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" "6c53ba5e06a1029c6b8fed8e2ea7fd7a06f8a528f5d032f6183bf8315397b8f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c53ba5e06a1029c6b8fed8e2ea7fd7a06f8a528f5d032f6183bf8315397b8f5", kill_on_drop: false }`
[INFO] [stdout] 6c53ba5e06a1029c6b8fed8e2ea7fd7a06f8a528f5d032f6183bf8315397b8f5