[INFO] fetching crate sc-peerset 2.0.0-alpha.6... [INFO] testing sc-peerset-2.0.0-alpha.6 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274 [INFO] extracting crate sc-peerset 2.0.0-alpha.6 into /workspace/builds/worker-6/source [INFO] validating manifest of crates.io crate sc-peerset 2.0.0-alpha.6 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16 [INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate sc-peerset 2.0.0-alpha.6 [INFO] finished tweaking crates.io crate sc-peerset 2.0.0-alpha.6 [INFO] tweaked toml for crates.io crate sc-peerset 2.0.0-alpha.6 written to /workspace/builds/worker-6/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] b168f2acfceafd3adb3db3c269917097ecebf64b72c94f7fbb2eb07dad4ba894 [INFO] running `"docker" "start" "-a" "b168f2acfceafd3adb3db3c269917097ecebf64b72c94f7fbb2eb07dad4ba894"` [INFO] [stderr] Compiling libc v0.2.69 [INFO] [stderr] Compiling proc-macro2 v1.0.10 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.17 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling typenum v1.12.0 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling proc-macro-nested v0.1.4 [INFO] [stderr] Compiling byte-tools v0.3.1 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling anyhow v1.0.28 [INFO] [stderr] Compiling ppv-lite86 v0.2.6 [INFO] [stderr] Compiling proc-macro-hack v0.5.15 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling cc v1.0.51 [INFO] [stderr] Compiling futures-core v0.3.4 [INFO] [stderr] Compiling futures-io v0.3.4 [INFO] [stderr] Compiling smallvec v1.3.0 [INFO] [stderr] Compiling futures-task v0.3.4 [INFO] [stderr] Compiling slab v0.4.2 [INFO] [stderr] Compiling either v1.5.3 [INFO] [stderr] Compiling opaque-debug v0.2.3 [INFO] [stderr] Compiling pin-utils v0.1.0 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling fake-simd v0.1.2 [INFO] [stderr] Compiling bytes v0.5.4 [INFO] [stderr] Compiling arrayref v0.3.6 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling unicode-segmentation v1.6.0 [INFO] [stderr] Compiling remove_dir_all v0.5.2 [INFO] [stderr] Compiling subtle v1.0.0 [INFO] [stderr] Compiling matches v0.1.8 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling fixedbitset v0.2.0 [INFO] [stderr] Compiling constant_time_eq v0.1.5 [INFO] [stderr] Compiling arrayvec v0.5.1 [INFO] [stderr] Compiling serde v1.0.106 [INFO] [stderr] Compiling unsigned-varint v0.3.3 [INFO] [stderr] Compiling keccak v0.1.0 [INFO] [stderr] Compiling multimap v0.8.1 [INFO] [stderr] Compiling spin v0.5.2 [INFO] [stderr] Compiling crunchy v0.2.2 [INFO] [stderr] Compiling subtle v2.2.2 [INFO] [stderr] Compiling fnv v1.0.6 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling static_assertions v1.1.0 [INFO] [stderr] Compiling percent-encoding v2.1.0 [INFO] [stderr] Compiling zeroize v1.1.0 [INFO] [stderr] Compiling untrusted v0.7.0 [INFO] [stderr] Compiling protobuf v2.14.0 [INFO] [stderr] Compiling bs58 v0.3.1 [INFO] [stderr] Compiling data-encoding v2.2.0 [INFO] [stderr] Compiling prometheus v0.8.0 [INFO] [stderr] Compiling void v1.0.2 [INFO] [stderr] Compiling ryu v1.0.3 [INFO] [stderr] Compiling futures-timer v3.0.2 [INFO] [stderr] Compiling itoa v0.4.5 [INFO] [stderr] Compiling block-padding v0.1.5 [INFO] [stderr] Compiling futures-channel v0.3.4 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling unicode-normalization v0.1.12 [INFO] [stderr] Compiling unicode-bidi v0.3.4 [INFO] [stderr] Compiling lock_api v0.3.4 [INFO] [stderr] Compiling itertools v0.8.2 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Compiling blake2b_simd v0.5.10 [INFO] [stderr] Compiling blake2s_simd v0.5.10 [INFO] [stderr] Compiling indexmap v1.3.2 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling smallvec v0.6.13 [INFO] [stderr] Compiling idna v0.2.0 [INFO] [stderr] Compiling quote v1.0.3 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling which v3.1.1 [INFO] [stderr] Compiling parking_lot_core v0.7.2 [INFO] [stderr] Compiling ring v0.16.12 [INFO] [stderr] Compiling clear_on_drop v0.2.3 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling petgraph v0.5.0 [INFO] [stderr] Compiling url v2.1.1 [INFO] [stderr] Compiling parking_lot v0.10.2 [INFO] [stderr] Compiling prost-build v0.6.1 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Compiling generic-array v0.12.3 [INFO] [stderr] Compiling digest v0.8.1 [INFO] [stderr] Compiling block-buffer v0.7.3 [INFO] [stderr] Compiling crypto-mac v0.7.0 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling curve25519-dalek v2.0.0 [INFO] [stderr] Compiling hmac v0.7.1 [INFO] [stderr] Compiling sha2 v0.8.1 [INFO] [stderr] Compiling sha-1 v0.8.2 [INFO] [stderr] Compiling sha3 v0.8.2 [INFO] [stderr] Compiling hmac-drbg v0.2.0 [INFO] [stderr] Compiling multihash v0.10.1 [INFO] [stderr] Compiling tempfile v3.1.0 [INFO] [stderr] Compiling libsecp256k1 v0.3.5 [INFO] [stderr] Compiling ed25519-dalek v1.0.0-pre.3 [INFO] [stderr] Compiling parity-multiaddr v0.8.0 [INFO] [stderr] Compiling serde_json v1.0.51 [INFO] [stderr] Compiling futures-macro v0.3.4 [INFO] [stderr] Compiling prost-derive v0.6.1 [INFO] [stderr] Compiling thiserror-impl v1.0.15 [INFO] [stderr] Compiling pin-project-internal v0.4.9 [INFO] [stderr] Compiling asn1_der_derive v0.1.2 [INFO] [stderr] Compiling libp2p-core-derive v0.18.0 [INFO] [stderr] Compiling asn1_der v0.6.3 [INFO] [stderr] Compiling futures-util v0.3.4 [INFO] [stderr] Compiling thiserror v1.0.15 [INFO] [stderr] Compiling pin-project v0.4.9 [INFO] [stderr] Compiling prost v0.6.1 [INFO] [stderr] Compiling prost-types v0.6.1 [INFO] [stderr] Compiling futures-executor v0.3.4 [INFO] [stderr] Compiling futures v0.3.4 [INFO] [stderr] Compiling rw-stream-sink v0.2.1 [INFO] [stderr] Compiling multistream-select v0.8.0 [INFO] [stderr] Compiling wasm-timer v0.2.4 [INFO] [stderr] Compiling sp-utils v2.0.0-alpha.6 [INFO] [stderr] Compiling libp2p-core v0.18.0 [INFO] [stderr] Compiling libp2p-swarm v0.18.1 [INFO] [stderr] Compiling libp2p v0.18.1 [INFO] [stderr] Compiling sc-peerset v2.0.0-alpha.6 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3m 41s [INFO] running `"docker" "inspect" "b168f2acfceafd3adb3db3c269917097ecebf64b72c94f7fbb2eb07dad4ba894"` [INFO] running `"docker" "rm" "-f" "b168f2acfceafd3adb3db3c269917097ecebf64b72c94f7fbb2eb07dad4ba894"` [INFO] [stdout] b168f2acfceafd3adb3db3c269917097ecebf64b72c94f7fbb2eb07dad4ba894 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 4a54f3c29039502a20040b0eebdee0b8f313af90954eb1c6f99e6cfec128c496 [INFO] running `"docker" "start" "-a" "4a54f3c29039502a20040b0eebdee0b8f313af90954eb1c6f99e6cfec128c496"` [INFO] [stderr] Compiling sc-peerset v2.0.0-alpha.6 (/opt/rustwide/workdir) [INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `rand` [INFO] [stderr] --> tests/fuzz.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | use rand::distributions::{Distribution, Uniform, WeightedIndex}; [INFO] [stderr] | ^^^^ use of undeclared type or module `rand` [INFO] [stderr] [INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `rand` [INFO] [stderr] --> tests/fuzz.rs:20:5 [INFO] [stderr] | [INFO] [stderr] 20 | use rand::seq::IteratorRandom; [INFO] [stderr] | ^^^^ use of undeclared type or module `rand` [INFO] [stderr] [INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `rand` [INFO] [stderr] --> tests/fuzz.rs:33:16 [INFO] [stderr] | [INFO] [stderr] 33 | let mut rng = rand::thread_rng(); [INFO] [stderr] | ^^^^ use of undeclared type or module `rand` [INFO] [stderr] [INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Uniform` [INFO] [stderr] --> tests/fuzz.rs:41:20 [INFO] [stderr] | [INFO] [stderr] 41 | bootnodes: (0 .. Uniform::new_inclusive(0, 4).sample(&mut rng)).map(|_| { [INFO] [stderr] | ^^^^^^^ use of undeclared type or module `Uniform` [INFO] [stderr] [INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Uniform` [INFO] [stderr] --> tests/fuzz.rs:47:21 [INFO] [stderr] | [INFO] [stderr] 47 | let list = (0 .. Uniform::new_inclusive(0, 2).sample(&mut rng)).map(|_| { [INFO] [stderr] | ^^^^^^^ use of undeclared type or module `Uniform` [INFO] [stderr] [INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Uniform` [INFO] [stderr] --> tests/fuzz.rs:55:18 [INFO] [stderr] | [INFO] [stderr] 55 | reserved_only: Uniform::new_inclusive(0, 10).sample(&mut rng) == 0, [INFO] [stderr] | ^^^^^^^ use of undeclared type or module `Uniform` [INFO] [stderr] [INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Uniform` [INFO] [stderr] --> tests/fuzz.rs:56:13 [INFO] [stderr] | [INFO] [stderr] 56 | in_peers: Uniform::new_inclusive(0, 25).sample(&mut rng), [INFO] [stderr] | ^^^^^^^ use of undeclared type or module `Uniform` [INFO] [stderr] [INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Uniform` [INFO] [stderr] --> tests/fuzz.rs:57:14 [INFO] [stderr] | [INFO] [stderr] 57 | out_peers: Uniform::new_inclusive(0, 25).sample(&mut rng), [INFO] [stderr] | ^^^^^^^ use of undeclared type or module `Uniform` [INFO] [stderr] [INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `WeightedIndex` [INFO] [stderr] --> tests/fuzz.rs:75:10 [INFO] [stderr] | [INFO] [stderr] 75 | match WeightedIndex::new(&action_weights).unwrap().sample(&mut rng) { [INFO] [stderr] | ^^^^^^^^^^^^^ use of undeclared type or module `WeightedIndex` [INFO] [stderr] [INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Uniform` [INFO] [stderr] --> tests/fuzz.rs:102:16 [INFO] [stderr] | [INFO] [stderr] 102 | let val = Uniform::new_inclusive(i32::min_value(), i32::max_value()).sample(&mut rng); [INFO] [stderr] | ^^^^^^^ use of undeclared type or module `Uniform` [INFO] [stderr] [INFO] [stderr] error[E0599]: no method named `choose` found for struct `std::collections::hash_set::Iter<'_, libp2p_core::peer_id::PeerId>` in the current scope [INFO] [stderr] --> tests/fuzz.rs:101:47 [INFO] [stderr] | [INFO] [stderr] 101 | 2 => if let Some(id) = known_nodes.iter().choose(&mut rng) { [INFO] [stderr] | ^^^^^^ method not found in `std::collections::hash_set::Iter<'_, libp2p_core::peer_id::PeerId>` [INFO] [stderr] | [INFO] [stderr] ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.7.3/src/seq/mod.rs:255:8 [INFO] [stderr] | [INFO] [stderr] 255 | fn choose(mut self, rng: &mut R) -> Option [INFO] [stderr] | ------ [INFO] [stderr] | | [INFO] [stderr] | the method is available for `std::boxed::Box>` here [INFO] [stderr] | the method is available for `std::sync::Arc>` here [INFO] [stderr] | the method is available for `std::rc::Rc>` here [INFO] [stderr] | [INFO] [stderr] = help: items from traits can only be used if the trait is in scope [INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it: [INFO] [stderr] | [INFO] [stderr] 17 | use rand::seq::IteratorRandom; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] error[E0599]: no method named `choose` found for struct `std::collections::hash_set::Iter<'_, libp2p_core::peer_id::PeerId>` in the current scope [INFO] [stderr] --> tests/fuzz.rs:107:51 [INFO] [stderr] | [INFO] [stderr] 107 | 3 => if let Some(id) = connected_nodes.iter().choose(&mut rng).cloned() { [INFO] [stderr] | ^^^^^^ method not found in `std::collections::hash_set::Iter<'_, libp2p_core::peer_id::PeerId>` [INFO] [stderr] | [INFO] [stderr] ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.7.3/src/seq/mod.rs:255:8 [INFO] [stderr] | [INFO] [stderr] 255 | fn choose(mut self, rng: &mut R) -> Option [INFO] [stderr] | ------ [INFO] [stderr] | | [INFO] [stderr] | the method is available for `std::boxed::Box>` here [INFO] [stderr] | the method is available for `std::sync::Arc>` here [INFO] [stderr] | the method is available for `std::rc::Rc>` here [INFO] [stderr] | [INFO] [stderr] = help: items from traits can only be used if the trait is in scope [INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it: [INFO] [stderr] | [INFO] [stderr] 17 | use rand::seq::IteratorRandom; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] error[E0599]: no method named `choose` found for struct `std::iter::Filter, [closure@tests/fuzz.rs:114:14: 114:91 incoming_nodes:_, connected_nodes:_]>` in the current scope [INFO] [stderr] --> tests/fuzz.rs:115:7 [INFO] [stderr] | [INFO] [stderr] 115 | .choose(&mut rng) { [INFO] [stderr] | ^^^^^^ method not found in `std::iter::Filter, [closure@tests/fuzz.rs:114:14: 114:91 incoming_nodes:_, connected_nodes:_]>` [INFO] [stderr] | [INFO] [stderr] ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.7.3/src/seq/mod.rs:255:8 [INFO] [stderr] | [INFO] [stderr] 255 | fn choose(mut self, rng: &mut R) -> Option [INFO] [stderr] | ------ [INFO] [stderr] | | [INFO] [stderr] | the method is available for `std::boxed::Box, [closure@tests/fuzz.rs:114:14: 114:91 incoming_nodes:_, connected_nodes:_]>>` here [INFO] [stderr] | the method is available for `std::sync::Arc, [closure@tests/fuzz.rs:114:14: 114:91 incoming_nodes:_, connected_nodes:_]>>` here [INFO] [stderr] | the method is available for `std::rc::Rc, [closure@tests/fuzz.rs:114:14: 114:91 incoming_nodes:_, connected_nodes:_]>>` here [INFO] [stderr] | [INFO] [stderr] = help: items from traits can only be used if the trait is in scope [INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it: [INFO] [stderr] | [INFO] [stderr] 17 | use rand::seq::IteratorRandom; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] error[E0599]: no method named `choose` found for struct `std::iter::Filter, [closure@tests/fuzz.rs:126:54: 126:86 reserved_nodes:_]>` in the current scope [INFO] [stderr] --> tests/fuzz.rs:126:88 [INFO] [stderr] | [INFO] [stderr] 126 | 7 => if let Some(id) = known_nodes.iter().filter(|n| !reserved_nodes.contains(*n)).choose(&mut rng) { [INFO] [stderr] | ^^^^^^ method not found in `std::iter::Filter, [closure@tests/fuzz.rs:126:54: 126:86 reserved_nodes:_]>` [INFO] [stderr] | [INFO] [stderr] ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.7.3/src/seq/mod.rs:255:8 [INFO] [stderr] | [INFO] [stderr] 255 | fn choose(mut self, rng: &mut R) -> Option [INFO] [stderr] | ------ [INFO] [stderr] | | [INFO] [stderr] | the method is available for `std::boxed::Box, [closure@tests/fuzz.rs:126:54: 126:86 reserved_nodes:_]>>` here [INFO] [stderr] | the method is available for `std::sync::Arc, [closure@tests/fuzz.rs:126:54: 126:86 reserved_nodes:_]>>` here [INFO] [stderr] | the method is available for `std::rc::Rc, [closure@tests/fuzz.rs:126:54: 126:86 reserved_nodes:_]>>` here [INFO] [stderr] | [INFO] [stderr] = help: items from traits can only be used if the trait is in scope [INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it: [INFO] [stderr] | [INFO] [stderr] 17 | use rand::seq::IteratorRandom; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] error[E0599]: no method named `choose` found for struct `std::collections::hash_set::Iter<'_, libp2p_core::peer_id::PeerId>` in the current scope [INFO] [stderr] --> tests/fuzz.rs:130:50 [INFO] [stderr] | [INFO] [stderr] 130 | 8 => if let Some(id) = reserved_nodes.iter().choose(&mut rng).cloned() { [INFO] [stderr] | ^^^^^^ method not found in `std::collections::hash_set::Iter<'_, libp2p_core::peer_id::PeerId>` [INFO] [stderr] | [INFO] [stderr] ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.7.3/src/seq/mod.rs:255:8 [INFO] [stderr] | [INFO] [stderr] 255 | fn choose(mut self, rng: &mut R) -> Option [INFO] [stderr] | ------ [INFO] [stderr] | | [INFO] [stderr] | the method is available for `std::boxed::Box>` here [INFO] [stderr] | the method is available for `std::sync::Arc>` here [INFO] [stderr] | the method is available for `std::rc::Rc>` here [INFO] [stderr] | [INFO] [stderr] = help: items from traits can only be used if the trait is in scope [INFO] [stderr] help: the following trait is implemented but not in scope; perhaps add a `use` for it: [INFO] [stderr] | [INFO] [stderr] 17 | use rand::seq::IteratorRandom; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] error: aborting due to 15 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0433, E0599. [INFO] [stderr] For more information about an error, try `rustc --explain E0433`. [INFO] [stderr] error: could not compile `sc-peerset`. [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] [stderr] error: build failed [INFO] running `"docker" "inspect" "4a54f3c29039502a20040b0eebdee0b8f313af90954eb1c6f99e6cfec128c496"` [INFO] running `"docker" "rm" "-f" "4a54f3c29039502a20040b0eebdee0b8f313af90954eb1c6f99e6cfec128c496"` [INFO] [stdout] 4a54f3c29039502a20040b0eebdee0b8f313af90954eb1c6f99e6cfec128c496