[INFO] fetching crate sc-peerset 2.0.0-rc6...
[INFO] checking sc-peerset-2.0.0-rc6 against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] extracting crate sc-peerset 2.0.0-rc6 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate sc-peerset 2.0.0-rc6 on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sc-peerset 2.0.0-rc6
[INFO] finished tweaking crates.io crate sc-peerset 2.0.0-rc6
[INFO] tweaked toml for crates.io crate sc-peerset 2.0.0-rc6 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "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] 5cd89ed531291fccaa799f7b078baffa337cdd34c37f84ef04c5ff765ca8987f
[INFO] running `Command { std: "docker" "start" "-a" "5cd89ed531291fccaa799f7b078baffa337cdd34c37f84ef04c5ff765ca8987f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cd89ed531291fccaa799f7b078baffa337cdd34c37f84ef04c5ff765ca8987f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cd89ed531291fccaa799f7b078baffa337cdd34c37f84ef04c5ff765ca8987f", kill_on_drop: false }`
[INFO] [stdout] 5cd89ed531291fccaa799f7b078baffa337cdd34c37f84ef04c5ff765ca8987f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=forbid" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 954d080f9b915caaa1bd3e9ed781e8463e98006655323b1f0e80417293ffc46e
[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" "954d080f9b915caaa1bd3e9ed781e8463e98006655323b1f0e80417293ffc46e", kill_on_drop: false }`
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[INFO] [stderr]     Checking sc-peerset v2.0.0-rc6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `rand`
[INFO] [stdout]   --> tests/fuzz.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use rand::distributions::{Distribution, Uniform, WeightedIndex};
[INFO] [stdout]    |     ^^^^ use of undeclared type or module `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `rand`
[INFO] [stdout]   --> tests/fuzz.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use rand::seq::IteratorRandom;
[INFO] [stdout]    |     ^^^^ use of undeclared type or module `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `rand`
[INFO] [stdout]   --> tests/fuzz.rs:35:16
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let mut rng = rand::thread_rng();
[INFO] [stdout]    |                   ^^^^ use of undeclared type or module `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Uniform`
[INFO] [stdout]   --> tests/fuzz.rs:43:20
[INFO] [stdout]    |
[INFO] [stdout] 43 |         bootnodes: (0 .. Uniform::new_inclusive(0, 4).sample(&mut rng)).map(|_| {
[INFO] [stdout]    |                          ^^^^^^^ use of undeclared type or module `Uniform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Uniform`
[INFO] [stdout]   --> tests/fuzz.rs:49:22
[INFO] [stdout]    |
[INFO] [stdout] 49 |             let nodes = (0 .. Uniform::new_inclusive(0, 2).sample(&mut rng)).map(|_| {
[INFO] [stdout]    |                               ^^^^^^^ use of undeclared type or module `Uniform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Uniform`
[INFO] [stdout]   --> tests/fuzz.rs:57:18
[INFO] [stdout]    |
[INFO] [stdout] 57 |         reserved_only: Uniform::new_inclusive(0, 10).sample(&mut rng) == 0,
[INFO] [stdout]    |                        ^^^^^^^ use of undeclared type or module `Uniform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Uniform`
[INFO] [stdout]   --> tests/fuzz.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         in_peers: Uniform::new_inclusive(0, 25).sample(&mut rng),
[INFO] [stdout]    |                   ^^^^^^^ use of undeclared type or module `Uniform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Uniform`
[INFO] [stdout]   --> tests/fuzz.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |         out_peers: Uniform::new_inclusive(0, 25).sample(&mut rng),
[INFO] [stdout]    |                    ^^^^^^^ use of undeclared type or module `Uniform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `WeightedIndex`
[INFO] [stdout]   --> tests/fuzz.rs:77:10
[INFO] [stdout]    |
[INFO] [stdout] 77 |             match WeightedIndex::new(&action_weights).unwrap().sample(&mut rng) {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^ use of undeclared type or module `WeightedIndex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Uniform`
[INFO] [stdout]    --> tests/fuzz.rs:104:16
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     let val = Uniform::new_inclusive(i32::min_value(), i32::max_value()).sample(&mut rng);
[INFO] [stdout]     |                               ^^^^^^^ use of undeclared type or module `Uniform`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `choose` found for struct `std::collections::hash_set::Iter<'_, PeerId>` in the current scope
[INFO] [stdout]    --> tests/fuzz.rs:103:47
[INFO] [stdout]     |
[INFO] [stdout] 103 |                 2 => if let Some(id) = known_nodes.iter().choose(&mut rng) {
[INFO] [stdout]     |                                                           ^^^^^^ method not found in `std::collections::hash_set::Iter<'_, PeerId>`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.7.3/src/seq/mod.rs:255:8
[INFO] [stdout]     |
[INFO] [stdout] 255 |     fn choose<R>(mut self, rng: &mut R) -> Option<Self::Item>
[INFO] [stdout]     |        ------ the method is available for `Box<std::collections::hash_set::Iter<'_, PeerId>>` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 19  | use rand::seq::IteratorRandom;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `choose` found for struct `std::collections::hash_set::Iter<'_, PeerId>` in the current scope
[INFO] [stdout]    --> tests/fuzz.rs:109:51
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 3 => if let Some(id) = connected_nodes.iter().choose(&mut rng).cloned() {
[INFO] [stdout]     |                                                               ^^^^^^ method not found in `std::collections::hash_set::Iter<'_, PeerId>`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.7.3/src/seq/mod.rs:255:8
[INFO] [stdout]     |
[INFO] [stdout] 255 |     fn choose<R>(mut self, rng: &mut R) -> Option<Self::Item>
[INFO] [stdout]     |        ------ the method is available for `Box<std::collections::hash_set::Iter<'_, PeerId>>` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 19  | use rand::seq::IteratorRandom;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `choose` found for struct `std::iter::Filter<std::collections::hash_set::Iter<'_, PeerId>, [closure@tests/fuzz.rs:116:14: 116:91 incoming_nodes:_, connected_nodes:_]>` in the current scope
[INFO] [stdout]    --> tests/fuzz.rs:117:7
[INFO] [stdout]     |
[INFO] [stdout] 117 |                     .choose(&mut rng) {
[INFO] [stdout]     |                      ^^^^^^ method not found in `std::iter::Filter<std::collections::hash_set::Iter<'_, PeerId>, [closure@tests/fuzz.rs:116:14: 116:91 incoming_nodes:_, connected_nodes:_]>`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.7.3/src/seq/mod.rs:255:8
[INFO] [stdout]     |
[INFO] [stdout] 255 |     fn choose<R>(mut self, rng: &mut R) -> Option<Self::Item>
[INFO] [stdout]     |        ------ the method is available for `Box<std::iter::Filter<std::collections::hash_set::Iter<'_, PeerId>, [closure@tests/fuzz.rs:116:14: 116:91 incoming_nodes:_, connected_nodes:_]>>` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 19  | use rand::seq::IteratorRandom;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `choose` found for struct `std::iter::Filter<std::collections::hash_set::Iter<'_, PeerId>, [closure@tests/fuzz.rs:128:54: 128:86 reserved_nodes:_]>` in the current scope
[INFO] [stdout]    --> tests/fuzz.rs:128:88
[INFO] [stdout]     |
[INFO] [stdout] 128 |                 7 => if let Some(id) = known_nodes.iter().filter(|n| !reserved_nodes.contains(*n)).choose(&mut rng) {
[INFO] [stdout]     |                                                                                                    ^^^^^^ method not found in `std::iter::Filter<std::collections::hash_set::Iter<'_, PeerId>, [closure@tests/fuzz.rs:128:54: 128:86 reserved_nodes:_]>`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.7.3/src/seq/mod.rs:255:8
[INFO] [stdout]     |
[INFO] [stdout] 255 |     fn choose<R>(mut self, rng: &mut R) -> Option<Self::Item>
[INFO] [stdout]     |        ------ the method is available for `Box<std::iter::Filter<std::collections::hash_set::Iter<'_, PeerId>, [closure@tests/fuzz.rs:128:54: 128:86 reserved_nodes:_]>>` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 19  | use rand::seq::IteratorRandom;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `choose` found for struct `std::collections::hash_set::Iter<'_, PeerId>` in the current scope
[INFO] [stdout]    --> tests/fuzz.rs:132:50
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 8 => if let Some(id) = reserved_nodes.iter().choose(&mut rng).cloned() {
[INFO] [stdout]     |                                                              ^^^^^^ method not found in `std::collections::hash_set::Iter<'_, PeerId>`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.7.3/src/seq/mod.rs:255:8
[INFO] [stdout]     |
[INFO] [stdout] 255 |     fn choose<R>(mut self, rng: &mut R) -> Option<Self::Item>
[INFO] [stdout]     |        ------ the method is available for `Box<std::collections::hash_set::Iter<'_, PeerId>>` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 19  | use rand::seq::IteratorRandom;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 15 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sc-peerset`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "954d080f9b915caaa1bd3e9ed781e8463e98006655323b1f0e80417293ffc46e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "954d080f9b915caaa1bd3e9ed781e8463e98006655323b1f0e80417293ffc46e", kill_on_drop: false }`
[INFO] [stdout] 954d080f9b915caaa1bd3e9ed781e8463e98006655323b1f0e80417293ffc46e
