[INFO] cloning repository https://github.com/fin-ger/simple-raft-node
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fin-ger/simple-raft-node" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffin-ger%2Fsimple-raft-node", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffin-ger%2Fsimple-raft-node'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ae32e1719b8164535b855207287b7cd248e1370
[INFO] testing fin-ger/simple-raft-node against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffin-ger%2Fsimple-raft-node" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fin-ger/simple-raft-node on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fin-ger/simple-raft-node
[INFO] finished tweaking git repo https://github.com/fin-ger/simple-raft-node
[INFO] tweaked toml for git repo https://github.com/fin-ger/simple-raft-node written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/fin-ger/simple-raft-node already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a17ccb387482c277b9a4210e54a4a2e0aa0677d2e780b9bbcd56398f3aadc1b4
[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" "a17ccb387482c277b9a4210e54a4a2e0aa0677d2e780b9bbcd56398f3aadc1b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a17ccb387482c277b9a4210e54a4a2e0aa0677d2e780b9bbcd56398f3aadc1b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a17ccb387482c277b9a4210e54a4a2e0aa0677d2e780b9bbcd56398f3aadc1b4", kill_on_drop: false }`
[INFO] [stdout] a17ccb387482c277b9a4210e54a4a2e0aa0677d2e780b9bbcd56398f3aadc1b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04c758e3cc277502154384b0d8b8aff4fc0859699a3600a02406713889762661
[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" "04c758e3cc277502154384b0d8b8aff4fc0859699a3600a02406713889762661", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling protobuf v2.8.1
[INFO] [stderr]    Compiling async-datagram v3.0.0
[INFO] [stderr]    Compiling async-ready v3.0.0
[INFO] [stderr]    Compiling hashbrown v0.5.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling slog-scope v4.1.2
[INFO] [stderr]    Compiling slog-async v2.3.0
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling crossbeam v0.7.2
[INFO] [stderr]    Compiling backtrace v0.3.38
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling slog-stdlog v4.0.0
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rmp v0.8.8
[INFO] [stderr]    Compiling chrono v0.4.9
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling slog-term v2.4.1
[INFO] [stderr]    Compiling runtime-raw v0.3.0-alpha.5
[INFO] [stderr]    Compiling juliex v0.3.0-alpha.8
[INFO] [stderr]    Compiling futures-timer v0.3.0
[INFO] [stderr]    Compiling romio v0.3.0-alpha.10
[INFO] [stderr]    Compiling slog-envlogger v2.2.0
[INFO] [stderr]    Compiling runtime-native v0.3.0-alpha.6
[INFO] [stderr]    Compiling protobuf-codegen v2.8.1
[INFO] [stderr]    Compiling protobuf-build v0.10.0
[INFO] [stderr]    Compiling synstructure v0.12.1
[INFO] [stderr]    Compiling getset v0.0.7
[INFO] [stderr]    Compiling raft-proto v0.6.0-alpha (https://github.com/pingcap/raft-rs?branch=master#d0acd70a)
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling runtime-attributes v0.3.0-alpha.6
[INFO] [stderr]    Compiling runtime v0.3.0-alpha.7
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling raft v0.6.0-alpha (https://github.com/pingcap/raft-rs?branch=master#d0acd70a)
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling rmp-serde v0.14.0
[INFO] [stderr]    Compiling simple-raft-node 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / #![feature(
[INFO] [stdout] 2 | |     vec_remove_item,
[INFO] [stdout] 3 | |     drain_filter,
[INFO] [stdout] 4 | |     trait_alias,
[INFO] [stdout] 5 | |     fn_traits,
[INFO] [stdout] 6 | | )]
[INFO] [stdout]   | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::vec::Vec::<T>::remove_item`: Removing the first item equal to a needle is already easily possible with iterators and the current Vec methods. Furthermore, having a method for one particular case of removal (linear search, only the first item, no swap remove) but not for others is inconsistent. This method will be removed soon.
[INFO] [stdout]    --> src/node_core.rs:522:27
[INFO] [stdout]     |
[INFO] [stdout] 522 |             self.proposed.remove_item(&proposal_id);
[INFO] [stdout]     |                           ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::vec::Vec::<T>::remove_item`: Removing the first item equal to a needle is already easily possible with iterators and the current Vec methods. Furthermore, having a method for one particular case of removal (linear search, only the first item, no swap remove) but not for others is inconsistent. This method will be removed soon.
[INFO] [stdout]    --> src/node_core.rs:880:35
[INFO] [stdout]     |
[INFO] [stdout] 880 |                     self.proposed.remove_item(&proposal_id);
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simple-raft-node`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "04c758e3cc277502154384b0d8b8aff4fc0859699a3600a02406713889762661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04c758e3cc277502154384b0d8b8aff4fc0859699a3600a02406713889762661", kill_on_drop: false }`
[INFO] [stdout] 04c758e3cc277502154384b0d8b8aff4fc0859699a3600a02406713889762661