[INFO] updating cached repository https://github.com/TGElder/hanger-lane [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 0ea41fbc213bf44e10f7e801bd2a4e3e5ba5bac5 [INFO] checking TGElder/hanger-lane against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTGElder%2Fhanger-lane" "/workspace/builds/worker-13/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/TGElder/hanger-lane on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c [INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/TGElder/hanger-lane [INFO] removed workspace from git repo https://github.com/TGElder/hanger-lane [INFO] removed path dependency network from git repo https://github.com/TGElder/hanger-lane [INFO] finished tweaking git repo https://github.com/TGElder/hanger-lane [INFO] tweaked toml for git repo https://github.com/TGElder/hanger-lane written to /workspace/builds/worker-13/source/Cargo.toml [INFO] crate git repo https://github.com/TGElder/hanger-lane already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] warning: dependency (network) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions [INFO] [stderr] Updating crates.io index [INFO] [stderr] error: the lock file /workspace/builds/worker-13/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] the lockfile is outdated, regenerating it [INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] warning: dependency (network) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] a7c3d5a892068fc5be7c90e916db15a416b9dffe8e65e79122f7dc69bec8e4ea [INFO] running `"docker" "start" "-a" "a7c3d5a892068fc5be7c90e916db15a416b9dffe8e65e79122f7dc69bec8e4ea"` [INFO] [stderr] warning: dependency (network) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling itoa v0.3.4 [INFO] [stderr] Compiling dtoa v0.4.4 [INFO] [stderr] Compiling serde v0.9.15 [INFO] [stderr] Compiling bitflags v0.9.1 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling syn v1.0.11 [INFO] [stderr] Compiling rayon-core v1.6.1 [INFO] [stderr] Compiling arrayvec v0.4.12 [INFO] [stderr] Checking shader_version v0.3.0 [INFO] [stderr] Checking ucd-util v0.1.5 [INFO] [stderr] Checking read_color v1.0.0 [INFO] [stderr] Checking utf8-ranges v1.0.4 [INFO] [stderr] Checking piston-texture v0.6.0 [INFO] [stderr] Checking network v0.0.2 [INFO] [stderr] Compiling crossbeam-utils v0.7.0 [INFO] [stderr] Compiling crossbeam-epoch v0.8.0 [INFO] [stderr] Compiling phf_shared v0.7.24 [INFO] [stderr] Checking vecmath v0.3.1 [INFO] [stderr] Compiling x11-dl v2.18.4 [INFO] [stderr] Checking inflate v0.3.4 [INFO] [stderr] Checking gif v0.9.2 [INFO] [stderr] Checking textwrap v0.9.0 [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling xml-rs v0.6.1 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking regex-syntax v0.5.6 [INFO] [stderr] Compiling num-traits v0.2.10 [INFO] [stderr] Checking num_cpus v1.11.1 [INFO] [stderr] Checking shared_library v0.1.9 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Compiling phf v0.7.24 [INFO] [stderr] Checking stb_truetype v0.3.1 [INFO] [stderr] Compiling memoffset v0.5.3 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Compiling xml-rs v0.7.0 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking clap v2.31.2 [INFO] [stderr] Checking fs2 v0.2.5 [INFO] [stderr] Checking osmesa-sys v0.1.2 [INFO] [stderr] Checking num-bigint v0.1.44 [INFO] [stderr] Checking tempfile v2.2.0 [INFO] [stderr] Compiling log v0.3.9 [INFO] [stderr] Checking enum_primitive v0.1.1 [INFO] [stderr] Checking png v0.11.0 [INFO] [stderr] Checking memmap v0.4.0 [INFO] [stderr] Checking stb_truetype v0.2.8 [INFO] [stderr] Checking crossbeam-queue v0.2.0 [INFO] [stderr] Checking rusttype v0.2.4 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling wayland-scanner v0.9.10 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling gl_generator v0.7.0 [INFO] [stderr] Compiling gl_generator v0.6.1 [INFO] [stderr] Checking crossbeam-deque v0.7.2 [INFO] [stderr] Checking num-rational v0.1.42 [INFO] [stderr] Checking num v0.1.42 [INFO] [stderr] Compiling wayland-client v0.9.10 [INFO] [stderr] Compiling wayland-protocols v0.9.10 [INFO] [stderr] Checking piston2d-graphics v0.24.0 [INFO] [stderr] Checking rayon v1.2.1 [INFO] [stderr] Compiling gl v0.7.0 [INFO] [stderr] Compiling glutin v0.10.1 [INFO] [stderr] Compiling phf_generator v0.7.24 [INFO] [stderr] Compiling phf_codegen v0.7.24 [INFO] [stderr] Checking regex v0.2.11 [INFO] [stderr] Compiling target_build_utils v0.3.1 [INFO] [stderr] Checking hamcrest v0.1.5 [INFO] [stderr] Compiling serde_derive v1.0.103 [INFO] [stderr] Checking jpeg-decoder v0.1.18 [INFO] [stderr] Compiling serde_json v0.9.10 [INFO] [stderr] Checking image v0.18.0 [INFO] [stderr] Compiling libloading v0.3.4 [INFO] [stderr] Checking piston2d-opengl_graphics v0.50.0 [INFO] [stderr] Checking dlib v0.3.1 [INFO] [stderr] Checking wayland-sys v0.9.10 [INFO] [stderr] Checking wayland-kbd v0.9.1 [INFO] [stderr] Checking pistoncore-input v0.20.0 [INFO] [stderr] Checking wayland-window v0.8.0 [INFO] [stderr] Checking winit v0.8.3 [INFO] [stderr] Checking pistoncore-window v0.30.0 [INFO] [stderr] Checking pistoncore-event_loop v0.35.0 [INFO] [stderr] Checking piston v0.35.0 [INFO] [stderr] Checking pistoncore-glutin_window v0.43.0 [INFO] [stderr] Checking hanger_lane v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] error[E0432]: unresolved import `network::Edge` [INFO] [stderr] --> src/city.rs:38:5 [INFO] [stderr] | [INFO] [stderr] 38 | use network::Edge; [INFO] [stderr] | ^^^^^^^^^^^^^ no `Edge` in the root [INFO] [stderr] [INFO] [stderr] error[E0432]: unresolved import `network::Network` [INFO] [stderr] --> src/steps/lookahead_driver.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use network::Network; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ no `Network` in the root [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/simulation.rs:13:18 [INFO] [stderr] | [INFO] [stderr] 13 | pub rng: Box, [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/simulation.rs:21:86 [INFO] [stderr] | [INFO] [stderr] 21 | fn update(&self, vehicle: &mut Vehicle, occupancy: &mut Occupancy, rng: &mut Box); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/simulation.rs:25:26 [INFO] [stderr] | [INFO] [stderr] 25 | pub updates: Vec>, [INFO] [stderr] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn VehicleUpdate` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/simulation.rs:43:24 [INFO] [stderr] | [INFO] [stderr] 43 | pub steps: Vec>, [INFO] [stderr] | ^^^^^^^^^^^^^^ help: use `dyn`: `dyn SimulationStep` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/lookahead_driver.rs:47:86 [INFO] [stderr] | [INFO] [stderr] 47 | fn update(&self, vehicle: &mut Vehicle, occupancy: &mut Occupancy, rng: &mut Box) { [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/block_occupier.rs:17:87 [INFO] [stderr] | [INFO] [stderr] 17 | fn update(&self, vehicle: &mut Vehicle, occupancy: &mut Occupancy, _rng: &mut Box) { [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/block_occupier.rs:37:87 [INFO] [stderr] | [INFO] [stderr] 37 | fn update(&self, vehicle: &mut Vehicle, occupancy: &mut Occupancy, _rng: &mut Box) { [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/traffic_lights.rs:13:24 [INFO] [stderr] | [INFO] [stderr] 13 | timer: RefCell>, [INFO] [stderr] | ^^^^^ help: use `dyn`: `dyn Timer` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/traffic_lights.rs:19:59 [INFO] [stderr] | [INFO] [stderr] 19 | pub fn new(nodes: Vec>, timer: RefCell>, occupancy: &mut Occupancy) -> TrafficLights { [INFO] [stderr] | ^^^^^ help: use `dyn`: `dyn Timer` [INFO] [stderr] [INFO] [stderr] error[E0432]: unresolved import `network::Edge` [INFO] [stderr] --> src/city.rs:38:5 [INFO] [stderr] | [INFO] [stderr] 38 | use network::Edge; [INFO] [stderr] | ^^^^^^^^^^^^^ no `Edge` in the root [INFO] [stderr] [INFO] [stderr] error[E0432]: unresolved import `network::Edge` [INFO] [stderr] --> src/city.rs:115:9 [INFO] [stderr] | [INFO] [stderr] 115 | use network::Edge; [INFO] [stderr] | ^^^^^^^^^^^^^ no `Edge` in the root [INFO] [stderr] [INFO] [stderr] error[E0432]: unresolved import `network::Network` [INFO] [stderr] --> src/steps/lookahead_driver.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use network::Network; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ no `Network` in the root [INFO] [stderr] [INFO] [stderr] error[E0432]: unresolved imports `network::Edge`, `network::Network` [INFO] [stderr] --> src/steps/lookahead_driver.rs:83:19 [INFO] [stderr] | [INFO] [stderr] 83 | use network::{Edge, Network}; [INFO] [stderr] | ^^^^ ^^^^^^^ no `Network` in the root [INFO] [stderr] | | [INFO] [stderr] | no `Edge` in the root [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/city.rs:136:44 [INFO] [stderr] | [INFO] [stderr] 136 | let mut cells = Vec::with_capacity((city.width * city.height * 4)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/simulation.rs:13:18 [INFO] [stderr] | [INFO] [stderr] 13 | pub rng: Box, [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/simulation.rs:21:86 [INFO] [stderr] | [INFO] [stderr] 21 | fn update(&self, vehicle: &mut Vehicle, occupancy: &mut Occupancy, rng: &mut Box); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/simulation.rs:25:26 [INFO] [stderr] | [INFO] [stderr] 25 | pub updates: Vec>, [INFO] [stderr] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn VehicleUpdate` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/simulation.rs:43:24 [INFO] [stderr] | [INFO] [stderr] 43 | pub steps: Vec>, [INFO] [stderr] | ^^^^^^^^^^^^^^ help: use `dyn`: `dyn SimulationStep` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/lookahead_driver.rs:47:86 [INFO] [stderr] | [INFO] [stderr] 47 | fn update(&self, vehicle: &mut Vehicle, occupancy: &mut Occupancy, rng: &mut Box) { [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0432`. [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/lookahead_driver.rs:96:117 [INFO] [stderr] | [INFO] [stderr] 96 | fn init(lookahead: usize, vehicle: usize, destination: Vec) -> (LookaheadDriver, Vehicle, Occupancy, Box) { [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/lookahead_driver.rs:100:22 [INFO] [stderr] | [INFO] [stderr] 100 | let rng: Box = Box::new(rand::thread_rng()); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/lookahead_driver.rs:267:26 [INFO] [stderr] | [INFO] [stderr] 267 | let mut rng: Box = Box::new(rand::thread_rng()); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/lookahead_driver.rs:289:26 [INFO] [stderr] | [INFO] [stderr] 289 | let mut rng: Box = Box::new(rand::thread_rng()); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] error: could not compile `hanger_lane`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/block_occupier.rs:17:87 [INFO] [stderr] | [INFO] [stderr] 17 | fn update(&self, vehicle: &mut Vehicle, occupancy: &mut Occupancy, _rng: &mut Box) { [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/block_occupier.rs:37:87 [INFO] [stderr] | [INFO] [stderr] 37 | fn update(&self, vehicle: &mut Vehicle, occupancy: &mut Occupancy, _rng: &mut Box) { [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/block_occupier.rs:65:26 [INFO] [stderr] | [INFO] [stderr] 65 | let mut rng: Box = Box::new(rand::thread_rng()); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/block_occupier.rs:78:26 [INFO] [stderr] | [INFO] [stderr] 78 | let mut rng: Box = Box::new(rand::thread_rng()); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/block_occupier.rs:92:26 [INFO] [stderr] | [INFO] [stderr] 92 | let mut rng: Box = Box::new(rand::thread_rng()); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/block_occupier.rs:107:26 [INFO] [stderr] | [INFO] [stderr] 107 | let mut rng: Box = Box::new(rand::thread_rng()); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/block_occupier.rs:121:26 [INFO] [stderr] | [INFO] [stderr] 121 | let mut rng: Box = Box::new(rand::thread_rng()); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/block_occupier.rs:136:26 [INFO] [stderr] | [INFO] [stderr] 136 | let mut rng: Box = Box::new(rand::thread_rng()); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/block_occupier.rs:152:26 [INFO] [stderr] | [INFO] [stderr] 152 | let mut rng: Box = Box::new(rand::thread_rng()); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/traffic_lights.rs:13:24 [INFO] [stderr] | [INFO] [stderr] 13 | timer: RefCell>, [INFO] [stderr] | ^^^^^ help: use `dyn`: `dyn Timer` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/traffic_lights.rs:19:59 [INFO] [stderr] | [INFO] [stderr] 19 | pub fn new(nodes: Vec>, timer: RefCell>, occupancy: &mut Occupancy) -> TrafficLights { [INFO] [stderr] | ^^^^^ help: use `dyn`: `dyn Timer` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/traffic_lights.rs:109:22 [INFO] [stderr] | [INFO] [stderr] 109 | let rng: Box = Box::new(rand::thread_rng()); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/steps/traffic_lights.rs:129:22 [INFO] [stderr] | [INFO] [stderr] 129 | let rng: Box = Box::new(rand::thread_rng()); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Rng` [INFO] [stderr] [INFO] [stderr] error: aborting due to 4 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0432`. [INFO] [stderr] error: could not compile `hanger_lane`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "a7c3d5a892068fc5be7c90e916db15a416b9dffe8e65e79122f7dc69bec8e4ea"` [INFO] running `"docker" "rm" "-f" "a7c3d5a892068fc5be7c90e916db15a416b9dffe8e65e79122f7dc69bec8e4ea"` [INFO] [stdout] a7c3d5a892068fc5be7c90e916db15a416b9dffe8e65e79122f7dc69bec8e4ea