[INFO] cloning repository https://github.com/placefortea/teatree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/placefortea/teatree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplacefortea%2Fteatree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplacefortea%2Fteatree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a56755a428fe63ee753df67a7c71d8f668e17ec
[INFO] checking placefortea/teatree against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplacefortea%2Fteatree" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/placefortea/teatree on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/placefortea/teatree
[INFO] finished tweaking git repo https://github.com/placefortea/teatree
[INFO] tweaked toml for git repo https://github.com/placefortea/teatree written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/placefortea/teatree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded digest v0.8.0
[INFO] [stderr]   Downloaded hashbrown v0.2.2
[INFO] [stderr]   Downloaded ipconfig v0.1.9
[INFO] [stderr]   Downloaded historian v4.0.3
[INFO] [stderr]   Downloaded bitflags v1.0.5
[INFO] [stderr]   Downloaded actix-threadpool v0.1.0
[INFO] [stderr]   Downloaded trust-dns-proto v0.7.3
[INFO] [stderr]   Downloaded tokio-timer v0.2.10
[INFO] [stderr]   Downloaded curve25519-dalek v1.1.3
[INFO] [stderr]   Downloaded generic-array v0.12.0
[INFO] [stderr]   Downloaded redox_users v0.3.0
[INFO] [stderr]   Downloaded actix-rt v0.2.2
[INFO] [stderr]   Downloaded trust-dns-resolver v0.11.0
[INFO] [stderr]   Downloaded proc-macro2 v0.4.29
[INFO] [stderr]   Downloaded cc v1.0.36
[INFO] [stderr]   Downloaded actix v0.8.1
[INFO] [stderr]   Downloaded keccak v0.1.0
[INFO] [stderr]   Downloaded sha3 v0.7.3
[INFO] [stderr]   Downloaded bincode v1.1.3
[INFO] [stderr]   Downloaded subtle v2.1.0
[INFO] [stderr]   Downloaded jsonrpc-parse v0.1.2
[INFO] [stderr]   Downloaded hashbrown v0.3.0
[INFO] [stderr]   Downloaded derive_more v0.14.0
[INFO] [stderr]   Downloaded ed25519-dalek v1.0.0-pre.1
[INFO] [stderr]   Downloaded sled v0.24.1
[INFO] [stderr]   Downloaded serde_derive v1.0.90
[INFO] [stderr]   Downloaded pagecache v0.17.0
[INFO] [stderr]   Downloaded serde_bytes v0.11.1
[INFO] [stderr]   Downloaded futures v0.1.26
[INFO] [stderr]   Downloaded tokio v0.1.19
[INFO] [stderr]   Downloaded backtrace v0.3.15
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.14
[INFO] [stderr]   Downloaded tokio-trace-core v0.1.0
[INFO] [stderr]   Downloaded tokio-executor v0.1.7
[INFO] [stderr]   Downloaded tokio-sync v0.1.5
[INFO] [stderr]   Downloaded syn v0.15.33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6a1f475222fdb4657af93a7294bae052e3575b0bd17b49f501bb5b08ee276f54
[INFO] running `Command { std: "docker" "start" "-a" "6a1f475222fdb4657af93a7294bae052e3575b0bd17b49f501bb5b08ee276f54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a1f475222fdb4657af93a7294bae052e3575b0bd17b49f501bb5b08ee276f54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a1f475222fdb4657af93a7294bae052e3575b0bd17b49f501bb5b08ee276f54", kill_on_drop: false }`
[INFO] [stdout] 6a1f475222fdb4657af93a7294bae052e3575b0bd17b49f501bb5b08ee276f54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5eac775247167973c2c9d58287c0cf8114152fdb323d021fb79adc7b019d9cc3
[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" "5eac775247167973c2c9d58287c0cf8114152fdb323d021fb79adc7b019d9cc3", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling subtle v2.1.0
[INFO] [stderr]     Checking historian v4.0.3
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling bincode v1.1.3
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking resolv-conf v0.6.2
[INFO] [stderr]     Checking sha3 v0.7.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]    Compiling curve25519-dalek v1.1.3
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.14
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.17
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio v0.1.19
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling enum-as-inner v0.2.1
[INFO] [stderr]    Compiling derive_more v0.14.0
[INFO] [stderr]    Compiling actix_derive v0.4.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking trust-dns-proto v0.7.3
[INFO] [stderr]     Checking actix-threadpool v0.1.0
[INFO] [stderr]     Checking actix-rt v0.2.2
[INFO] [stderr]     Checking trust-dns-resolver v0.11.0
[INFO] [stderr]     Checking actix v0.8.1
[INFO] [stderr]     Checking serde v1.0.90
[INFO] [stderr]     Checking hashbrown v0.3.0
[INFO] [stderr]     Checking serde_bytes v0.11.1
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.1
[INFO] [stderr]     Checking toml v0.5.0
[INFO] [stderr]     Checking pagecache v0.17.0
[INFO] [stderr]     Checking jsonrpc-parse v0.1.2
[INFO] [stderr]     Checking sled v0.24.1
[INFO] [stderr]     Checking teatree v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_drain_as_slice)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_drain_as_slice)]
[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 `teatree`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "5eac775247167973c2c9d58287c0cf8114152fdb323d021fb79adc7b019d9cc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5eac775247167973c2c9d58287c0cf8114152fdb323d021fb79adc7b019d9cc3", kill_on_drop: false }`
[INFO] [stdout] 5eac775247167973c2c9d58287c0cf8114152fdb323d021fb79adc7b019d9cc3