[INFO] cloning repository https://github.com/axieinfinity/mav
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/axieinfinity/mav" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faxieinfinity%2Fmav", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faxieinfinity%2Fmav'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3fbaf9241c8d037c9b92dc59004b9a39b740b64c
[INFO] checking axieinfinity/mav against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faxieinfinity%2Fmav" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/axieinfinity/mav 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/axieinfinity/mav
[INFO] finished tweaking git repo https://github.com/axieinfinity/mav
[INFO] tweaked toml for git repo https://github.com/axieinfinity/mav written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/axieinfinity/mav 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dialoguer v0.4.0
[INFO] [stderr]   Downloaded tokio-udp v0.1.4
[INFO] [stderr]   Downloaded clap-nested v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stdout] c9f0fd6d60e3986ef1ce4994fcca56861e2044136293a815a1efc1690d5c86fe
[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" "c9f0fd6d60e3986ef1ce4994fcca56861e2044136293a815a1efc1690d5c86fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9f0fd6d60e3986ef1ce4994fcca56861e2044136293a815a1efc1690d5c86fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9f0fd6d60e3986ef1ce4994fcca56861e2044136293a815a1efc1690d5c86fe", kill_on_drop: false }`
[INFO] [stdout] c9f0fd6d60e3986ef1ce4994fcca56861e2044136293a815a1efc1690d5c86fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 68152c2f2dce1e990fd4f7b1e997210a0439cdbe453b448f316c8fc186300748
[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" "68152c2f2dce1e990fd4f7b1e997210a0439cdbe453b448f316c8fc186300748", kill_on_drop: false }`
[INFO] [stderr]     Checking futures v0.1.28
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling cc v1.0.41
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.1
[INFO] [stderr]    Compiling pkg-config v0.3.15
[INFO] [stderr]     Checking regex-syntax v0.6.11
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]     Checking indexmap v1.1.0
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling encoding_rs v0.8.17
[INFO] [stderr]     Checking rgb v0.8.14
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]    Compiling unicase v2.4.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking miniz_oxide v0.3.2
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling hyper v0.12.33
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking number_prefix v0.2.8
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking clap-nested v0.1.1
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking flate2 v1.0.11
[INFO] [stderr]     Checking mime v0.3.13
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking shared_child v0.3.3
[INFO] [stderr]     Checking http v0.1.18
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking tokio-sync v0.1.6
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking regex v1.2.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.4
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking backtrace v0.3.35
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]     Checking console v0.8.0
[INFO] [stderr]     Checking publicsuffix v1.5.3
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking which v2.0.1
[INFO] [stderr]     Checking os_pipe v0.8.1
[INFO] [stderr]     Checking indicatif v0.11.0
[INFO] [stderr]     Checking dialoguer v0.4.0
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking duct v0.12.0
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking reqwest v0.9.20
[INFO] [stderr]     Checking mav v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure)]
[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 `mav`
[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" "68152c2f2dce1e990fd4f7b1e997210a0439cdbe453b448f316c8fc186300748", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68152c2f2dce1e990fd4f7b1e997210a0439cdbe453b448f316c8fc186300748", kill_on_drop: false }`
[INFO] [stdout] 68152c2f2dce1e990fd4f7b1e997210a0439cdbe453b448f316c8fc186300748