[INFO] cloning repository https://github.com/Grissess/RANKS
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Grissess/RANKS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGrissess%2FRANKS", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGrissess%2FRANKS'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a5a3853804f20a378d21abd5f449f4d40126b03
[INFO] checking Grissess/RANKS against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGrissess%2FRANKS" "/workspace/builds/worker-114/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-114/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Grissess/RANKS on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Grissess/RANKS
[INFO] finished tweaking git repo https://github.com/Grissess/RANKS
[INFO] tweaked toml for git repo https://github.com/Grissess/RANKS written to /workspace/builds/worker-114/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `git://github.com/thajohns/wasmi.git`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d20f8702c5caac2583c185e6c8c4586c90b63f7fe04d37bac2460e1f073922d7
[INFO] running `Command { std: "docker" "start" "-a" "d20f8702c5caac2583c185e6c8c4586c90b63f7fe04d37bac2460e1f073922d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d20f8702c5caac2583c185e6c8c4586c90b63f7fe04d37bac2460e1f073922d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d20f8702c5caac2583c185e6c8c4586c90b63f7fe04d37bac2460e1f073922d7", kill_on_drop: false }`
[INFO] [stdout] d20f8702c5caac2583c185e6c8c4586c90b63f7fe04d37bac2460e1f073922d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f395fcebee19c367a5eda90551c100449c2c80df72f0d67247946b4b19caf934
[INFO] running `Command { std: "docker" "start" "-a" "f395fcebee19c367a5eda90551c100449c2c80df72f0d67247946b4b19caf934", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling pkg-config v0.3.20
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking parity-wasm v0.42.2
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking atomic-option v0.1.2
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking tinyvec v1.5.0
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling openssl-sys v0.9.67
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking wasmi-validation v0.4.0 (git://github.com/thajohns/wasmi.git?branch=preemption#5fe14185)
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking bus v2.2.3
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking wasmi v0.9.0 (git://github.com/thajohns/wasmi.git?branch=preemption#5fe14185)
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-tls v0.2.1
[INFO] [stderr]     Checking websocket-base v0.26.2
[INFO] [stderr]     Checking websocket v0.26.2
[INFO] [stderr]     Checking RANKS v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(exclusive_range_pattern)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(try_blocks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(exclusive_range_pattern)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(try_blocks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `RANKS` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[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" "f395fcebee19c367a5eda90551c100449c2c80df72f0d67247946b4b19caf934", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f395fcebee19c367a5eda90551c100449c2c80df72f0d67247946b4b19caf934", kill_on_drop: false }`
[INFO] [stdout] f395fcebee19c367a5eda90551c100449c2c80df72f0d67247946b4b19caf934
