[INFO] fetching crate cxmr-ta 0.0.1...
[INFO] documenting cxmr-ta-0.0.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate cxmr-ta 0.0.1 into /workspace/builds/worker-82/source
[INFO] validating manifest of crates.io crate cxmr-ta 0.0.1 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cxmr-ta 0.0.1
[INFO] finished tweaking crates.io crate cxmr-ta 0.0.1
[INFO] tweaked toml for crates.io crate cxmr-ta 0.0.1 written to /workspace/builds/worker-82/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--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 cxmr-ta-core v0.1.5
[INFO] [stderr]   Downloaded cxmr-orderbook v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a588753632d0e042338bb7d365b7ecca91d1a4dab57c8d29cf712d17ef21e516
[INFO] running `Command { std: "docker" "start" "-a" "a588753632d0e042338bb7d365b7ecca91d1a4dab57c8d29cf712d17ef21e516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a588753632d0e042338bb7d365b7ecca91d1a4dab57c8d29cf712d17ef21e516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a588753632d0e042338bb7d365b7ecca91d1a4dab57c8d29cf712d17ef21e516", kill_on_drop: false }`
[INFO] [stdout] a588753632d0e042338bb7d365b7ecca91d1a4dab57c8d29cf712d17ef21e516
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/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" "RUSTDOCFLAGS=--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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b00c31ba2f23b97719e6944dc5e19c22ba494c3fb9ad5f2d135ab174050d9653
[INFO] running `Command { std: "docker" "start" "-a" "b00c31ba2f23b97719e6944dc5e19c22ba494c3fb9ad5f2d135ab174050d9653", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking err-convert-macro v0.0.1
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[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]     Checking object v0.28.4
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking cxmr-ta-core v0.1.5
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking cxmr-currency v0.0.1
[INFO] [stderr]     Checking cxmr-balances v0.0.1
[INFO] [stderr]     Checking cxmr-exchanges v0.0.1
[INFO] [stderr]     Checking cxmr-feeds v0.0.1
[INFO] [stderr]     Checking cxmr-orderbook v0.0.1
[INFO] [stderr] error: could not compile `cxmr-orderbook` due to 2 previous errors
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cxmr-orderbook-0.0.1/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[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] running `Command { std: "docker" "inspect" "b00c31ba2f23b97719e6944dc5e19c22ba494c3fb9ad5f2d135ab174050d9653", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b00c31ba2f23b97719e6944dc5e19c22ba494c3fb9ad5f2d135ab174050d9653", kill_on_drop: false }`
[INFO] [stdout] b00c31ba2f23b97719e6944dc5e19c22ba494c3fb9ad5f2d135ab174050d9653