[INFO] cloning repository https://github.com/marc2332/rust_blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marc2332/rust_blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarc2332%2Frust_blockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarc2332%2Frust_blockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cf73ece2c5ed3e693175a58c8cdd6879fed7df2c
[INFO] checking marc2332/rust_blockchain against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarc2332%2Frust_blockchain" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/marc2332/rust_blockchain 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/marc2332/rust_blockchain
[INFO] finished tweaking git repo https://github.com/marc2332/rust_blockchain
[INFO] tweaked toml for git repo https://github.com/marc2332/rust_blockchain written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/marc2332/rust_blockchain already has a lockfile, it will not be regenerated
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jsonrpc_client_macro v0.3.0
[INFO] [stderr]   Downloaded jsonrpc_client v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] caf0b722ea4da9816b3d4a073d1cf9cc56b816f698bd6ba35ada6a781b9e8705
[INFO] running `Command { std: "docker" "start" "-a" "caf0b722ea4da9816b3d4a073d1cf9cc56b816f698bd6ba35ada6a781b9e8705", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "caf0b722ea4da9816b3d4a073d1cf9cc56b816f698bd6ba35ada6a781b9e8705", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caf0b722ea4da9816b3d4a073d1cf9cc56b816f698bd6ba35ada6a781b9e8705", kill_on_drop: false }`
[INFO] [stdout] caf0b722ea4da9816b3d4a073d1cf9cc56b816f698bd6ba35ada6a781b9e8705
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 3d0c51b769e9813148f73366bf98a44a2d99f2c5b8ae00aeadb7a0f98b8b295b
[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" "3d0c51b769e9813148f73366bf98a44a2d99f2c5b8ae00aeadb7a0f98b8b295b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]     Checking version_check v0.9.3
[INFO] [stderr]    Compiling curl v0.4.38
[INFO] [stderr]    Compiling isahc v0.9.14
[INFO] [stderr]    Compiling http-types v2.12.0
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]    Compiling argh_shared v0.1.5
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling cookie v0.14.4
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.6+1.43.0
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling curl-sys v0.4.45+curl-7.78.0
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking spinning_top v0.2.4
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking flume v0.9.2
[INFO] [stderr]     Checking sluice v0.5.5
[INFO] [stderr]     Checking cipher v0.2.5
[INFO] [stderr]     Checking universal-hash v0.4.1
[INFO] [stderr]     Checking aead v0.3.2
[INFO] [stderr]     Checking crypto-mac v0.11.1
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling typed-builder v0.9.1
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.28
[INFO] [stderr]    Compiling actix-macros v0.1.3
[INFO] [stderr]    Compiling jsonrpc_client_macro v0.3.0
[INFO] [stderr]    Compiling actix-macros v0.2.1
[INFO] [stderr]    Compiling actix-web-codegen v0.4.0
[INFO] [stderr]    Compiling actix_derive v0.6.0
[INFO] [stderr]    Compiling argh_derive v0.1.5
[INFO] [stderr]     Checking serde v1.0.127
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking polyval v0.4.5
[INFO] [stderr]     Checking hmac v0.11.0
[INFO] [stderr]     Checking pbkdf2 v0.8.0
[INFO] [stderr]     Checking aes-soft v0.6.4
[INFO] [stderr]     Checking ctr v0.6.0
[INFO] [stderr]     Checking async-stream v0.3.2
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking value-bag v1.0.0-alpha.7
[INFO] [stderr]     Checking hkdf v0.10.0
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]    Compiling darling v0.13.0
[INFO] [stderr]     Checking ghash v0.3.1
[INFO] [stderr]     Checking aes v0.6.0
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]    Compiling serde_with_macros v1.5.0
[INFO] [stderr]     Checking aes-gcm v0.8.0
[INFO] [stderr]     Checking os_info v3.0.7
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking openssl-sys v0.9.66
[INFO] [stderr]     Checking socket2 v0.4.1
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking argh v0.1.5
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking dashmap v4.0.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking ahash v0.7.4
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking pin-project v0.4.28
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking openssl v0.10.36
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking serde_qs v0.8.4
[INFO] [stderr]     Checking actix-router v0.2.7
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking serde_with v1.10.0
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking crossterm v0.20.0
[INFO] [stderr]     Checking crossterm v0.21.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]     Checking webpki-roots v0.21.1
[INFO] [stderr]     Checking futures-executor v0.3.16
[INFO] [stderr]     Checking actix-service v1.0.6
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking simple_logger v1.13.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking async-std v1.9.0
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking futures v0.3.16
[INFO] [stderr]     Checking tui v0.16.0
[INFO] [stderr]     Checking jsonrpc-core v18.0.0
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking bson v2.0.0
[INFO] [stderr]     Checking native-tls v0.2.8
[INFO] [stderr]     Checking actix-threadpool v0.3.3
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]     Checking tokio-tls v0.2.1
[INFO] [stderr]     Checking jsonrpc-pubsub v18.0.0
[INFO] [stderr]     Checking websocket-base v0.24.0
[INFO] [stderr]    Compiling jsonrpc-derive v18.0.0
[INFO] [stderr]     Checking websocket v0.24.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking actix-rt v1.1.1
[INFO] [stderr]     Checking trust-dns-proto v0.19.7
[INFO] [stderr]     Checking actix-codec v0.3.0
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking trust-dns-proto v0.20.3
[INFO] [stderr]     Checking tokio-rustls v0.22.0
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking tokio-stream v0.1.7
[INFO] [stderr]     Checking actix-rt v2.2.0
[INFO] [stderr]     Checking actix-utils v2.0.0
[INFO] [stderr]     Checking tokio-test v0.4.2
[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]     Checking jsonrpc-server-utils v18.0.0
[INFO] [stderr]     Checking actix v0.12.0
[INFO] [stderr]     Checking actix-server v1.0.4
[INFO] [stderr]     Checking actix-tls v2.0.0
[INFO] [stderr]     Checking trust-dns-resolver v0.19.7
[INFO] [stderr]     Checking actix-testing v1.0.1
[INFO] [stderr]     Checking trust-dns-resolver v0.20.3
[INFO] [stderr]     Checking actix-connect v2.0.0
[INFO] [stderr]     Checking http-client v6.5.1
[INFO] [stderr]     Checking mongodb v2.0.0
[INFO] [stderr]     Checking surf v2.2.0
[INFO] [stderr]     Checking actix-http v2.2.1
[INFO] [stderr]     Checking hyper v0.14.11
[INFO] [stderr]     Checking awc v2.0.3
[INFO] [stderr]     Checking actix-web v3.3.2
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking jsonrpc-http-server v18.0.0
[INFO] [stderr]     Checking reqwest v0.11.4
[INFO] [stderr]     Checking jsonrpc-client-transports v18.0.0
[INFO] [stderr]     Checking jsonrpc-core-client v18.0.0
[INFO] [stderr]     Checking jsonrpc_client v0.7.0
[INFO] [stderr]     Checking blockchain v0.1.0 (/opt/rustwide/workdir/blockchain)
[INFO] [stderr]     Checking client v0.1.0 (/opt/rustwide/workdir/client)
[INFO] [stderr]     Checking consensus v0.1.0 (/opt/rustwide/workdir/consensus)
[INFO] [stderr]     Checking discovery_server v0.1.0 (/opt/rustwide/workdir/discovery_server)
[INFO] [stderr]     Checking node v0.1.0 (/opt/rustwide/workdir/node)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> node/src/lib.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 stable release channel
[INFO] [stdout]  --> node/src/lib.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 `node` due to 2 previous errors
[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" "3d0c51b769e9813148f73366bf98a44a2d99f2c5b8ae00aeadb7a0f98b8b295b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d0c51b769e9813148f73366bf98a44a2d99f2c5b8ae00aeadb7a0f98b8b295b", kill_on_drop: false }`
[INFO] [stdout] 3d0c51b769e9813148f73366bf98a44a2d99f2c5b8ae00aeadb7a0f98b8b295b
