[INFO] cloning repository https://github.com/volfco/stardance [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/volfco/stardance" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolfco%2Fstardance", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolfco%2Fstardance'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7eb73c121a29950409c85783b74a0ee149863526 [INFO] checking volfco/stardance against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolfco%2Fstardance" "/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/volfco/stardance on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/volfco/stardance [INFO] finished tweaking git repo https://github.com/volfco/stardance [INFO] tweaked toml for git repo https://github.com/volfco/stardance written to /workspace/builds/worker-9/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded swimmer v0.3.0 [INFO] [stderr] Downloaded zkstate v0.1.9 [INFO] [stderr] Downloaded zkmq v0.2.2 [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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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] c1d569d44d66f4f0439749d069c273048748f41bea637fa9db7fc3139c956c2e [INFO] running `Command { std: "docker" "start" "-a" "c1d569d44d66f4f0439749d069c273048748f41bea637fa9db7fc3139c956c2e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c1d569d44d66f4f0439749d069c273048748f41bea637fa9db7fc3139c956c2e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c1d569d44d66f4f0439749d069c273048748f41bea637fa9db7fc3139c956c2e", kill_on_drop: false }` [INFO] [stdout] c1d569d44d66f4f0439749d069c273048748f41bea637fa9db7fc3139c956c2e [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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9581172bc3c40e09e2b25205472d98d5dffc2f3d83b3592fafeedc68548a29ed [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" "9581172bc3c40e09e2b25205472d98d5dffc2f3d83b3592fafeedc68548a29ed", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling libc v0.2.93 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.70 [INFO] [stderr] Compiling serde_derive v1.0.125 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling serde v1.0.125 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Checking slab v0.4.3 [INFO] [stderr] Compiling getrandom v0.2.2 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Compiling rayon-core v1.9.0 [INFO] [stderr] Checking lazycell v1.3.0 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Compiling anyhow v1.0.40 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking bytes v0.5.6 [INFO] [stderr] Checking snowflake v1.3.0 [INFO] [stderr] Checking ahash v0.4.7 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking regex-syntax v0.6.23 [INFO] [stderr] Checking humantime v2.1.0 [INFO] [stderr] Checking dyn-clone v1.0.4 [INFO] [stderr] Checking termcolor v1.1.2 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking hashbrown v0.9.1 [INFO] [stderr] Checking swimmer v0.3.0 [INFO] [stderr] Compiling crossbeam-utils v0.8.3 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling memoffset v0.6.3 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling rayon v1.5.0 [INFO] [stderr] Checking aho-corasick v0.7.15 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking lru v0.6.5 [INFO] [stderr] Checking net2 v0.2.37 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking time v0.1.43 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking crossbeam-epoch v0.9.3 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Checking uuid v0.8.2 [INFO] [stderr] Checking crossbeam-channel v0.4.4 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Checking regex v1.4.5 [INFO] [stderr] Checking mio-extras v2.0.6 [INFO] [stderr] Checking env_logger v0.8.3 [INFO] [stderr] Compiling zookeeper_derive v0.4.1 [INFO] [stderr] Compiling derivative v2.2.0 [INFO] [stderr] Checking zookeeper v0.5.10 [INFO] [stderr] Checking chrono v0.4.19 [INFO] [stderr] Checking treediff v4.0.0 [INFO] [stderr] Checking zkmq v0.2.2 [INFO] [stderr] Checking zkstate v0.1.9 [INFO] [stderr] Checking stardance v0.1.0 (/opt/rustwide/workdir/stardance) [INFO] [stdout] warning: unused import: `Mutex` [INFO] [stdout] --> stardance/src/lib.rs:4:17 [INFO] [stdout] | [INFO] [stdout] 4 | use std::sync::{Mutex, Arc}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Mutex` [INFO] [stdout] --> stardance/src/lib.rs:4:17 [INFO] [stdout] | [INFO] [stdout] 4 | use std::sync::{Mutex, Arc}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `reschedule` is never read [INFO] [stdout] --> stardance/src/manager.rs:183:25 [INFO] [stdout] | [INFO] [stdout] 183 | let mut reschedule = false; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function cannot return without recursing [INFO] [stdout] --> stardance/src/lib.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | pub fn debug(&self, message: String) { self.debug(message) } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------- recursive call site [INFO] [stdout] | | [INFO] [stdout] | cannot return without recursing [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unconditional_recursion)]` on by default [INFO] [stdout] = help: a `loop` may express intention better if this is on purpose [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function cannot return without recursing [INFO] [stdout] --> stardance/src/lib.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn info(&self, message: String) { self.info(message) } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------ recursive call site [INFO] [stdout] | | [INFO] [stdout] | cannot return without recursing [INFO] [stdout] | [INFO] [stdout] = help: a `loop` may express intention better if this is on purpose [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function cannot return without recursing [INFO] [stdout] --> stardance/src/lib.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | pub fn warn(&self, message: String) { self.warn(message) } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------ recursive call site [INFO] [stdout] | | [INFO] [stdout] | cannot return without recursing [INFO] [stdout] | [INFO] [stdout] = help: a `loop` may express intention better if this is on purpose [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function cannot return without recursing [INFO] [stdout] --> stardance/src/lib.rs:33:5 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn error(&self, message: String) { self.error(message) } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------- recursive call site [INFO] [stdout] | | [INFO] [stdout] | cannot return without recursing [INFO] [stdout] | [INFO] [stdout] = help: a `loop` may express intention better if this is on purpose [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `reschedule` is never read [INFO] [stdout] --> stardance/src/manager.rs:183:25 [INFO] [stdout] | [INFO] [stdout] 183 | let mut reschedule = false; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function cannot return without recursing [INFO] [stdout] --> stardance/src/lib.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | pub fn debug(&self, message: String) { self.debug(message) } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------- recursive call site [INFO] [stdout] | | [INFO] [stdout] | cannot return without recursing [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unconditional_recursion)]` on by default [INFO] [stdout] = help: a `loop` may express intention better if this is on purpose [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function cannot return without recursing [INFO] [stdout] --> stardance/src/lib.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn info(&self, message: String) { self.info(message) } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------ recursive call site [INFO] [stdout] | | [INFO] [stdout] | cannot return without recursing [INFO] [stdout] | [INFO] [stdout] = help: a `loop` may express intention better if this is on purpose [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function cannot return without recursing [INFO] [stdout] --> stardance/src/lib.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | pub fn warn(&self, message: String) { self.warn(message) } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------ recursive call site [INFO] [stdout] | | [INFO] [stdout] | cannot return without recursing [INFO] [stdout] | [INFO] [stdout] = help: a `loop` may express intention better if this is on purpose [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function cannot return without recursing [INFO] [stdout] --> stardance/src/lib.rs:33:5 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn error(&self, message: String) { self.error(message) } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ------------------- recursive call site [INFO] [stdout] | | [INFO] [stdout] | cannot return without recursing [INFO] [stdout] | [INFO] [stdout] = help: a `loop` may express intention better if this is on purpose [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `run` [INFO] [stdout] --> stardance/src/executor.rs:38:5 [INFO] [stdout] | [INFO] [stdout] 38 | run: Arc, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `num_queue_workers` [INFO] [stdout] --> stardance/src/manager.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | num_queue_workers: u8, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `enable_sweep` [INFO] [stdout] --> stardance/src/manager.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 23 | enable_sweep: bool, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `sweep_interval` [INFO] [stdout] --> stardance/src/manager.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 25 | sweep_interval: u64 [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Reactor` [INFO] [stdout] --> stardance/src/reactor/mod.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | pub struct Reactor { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> stardance/src/executor.rs:158:13 [INFO] [stdout] | [INFO] [stdout] 158 | ctxw.task.save(ctxw.zk.clone(), ctxw.namespace.clone()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> stardance/src/manager.rs:251:5 [INFO] [stdout] | [INFO] [stdout] 251 | / executor.unwrap().update(|inner| { [INFO] [stdout] 252 | | inner.tasks.insert(id.clone(), task.id); [INFO] [stdout] 253 | | }); [INFO] [stdout] | |_______^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `run` [INFO] [stdout] --> stardance/src/executor.rs:38:5 [INFO] [stdout] | [INFO] [stdout] 38 | run: Arc, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `num_queue_workers` [INFO] [stdout] --> stardance/src/manager.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | num_queue_workers: u8, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `enable_sweep` [INFO] [stdout] --> stardance/src/manager.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 23 | enable_sweep: bool, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `sweep_interval` [INFO] [stdout] --> stardance/src/manager.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 25 | sweep_interval: u64 [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Reactor` [INFO] [stdout] --> stardance/src/reactor/mod.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | pub struct Reactor { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> stardance/src/executor.rs:158:13 [INFO] [stdout] | [INFO] [stdout] 158 | ctxw.task.save(ctxw.zk.clone(), ctxw.namespace.clone()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> stardance/src/manager.rs:251:5 [INFO] [stdout] | [INFO] [stdout] 251 | / executor.unwrap().update(|inner| { [INFO] [stdout] 252 | | inner.tasks.insert(id.clone(), task.id); [INFO] [stdout] 253 | | }); [INFO] [stdout] | |_______^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0601]: `main` function not found in crate `server` [INFO] [stdout] --> stardance/examples/server.rs:217:5 [INFO] [stdout] | [INFO] [stdout] 217 | // } [INFO] [stdout] | ^ consider adding a `main` function to `stardance/examples/server.rs` [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 E0601`. [INFO] [stdout] [INFO] [stderr] error: could not compile `stardance` [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] [stdout] error[E0601]: `main` function not found in crate `add_task` [INFO] [stdout] --> stardance/examples/add_task.rs:47:5 [INFO] [stdout] | [INFO] [stdout] 47 | // } [INFO] [stdout] | ^ consider adding a `main` function to `stardance/examples/add_task.rs` [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 E0601`. [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> stardance/examples/client.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let mut client = stardance::client::Client::new(zka.clone(), "co.volf.nomadic", None); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> stardance/examples/manager.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `id` [INFO] [stdout] --> stardance/examples/executor.rs:43:62 [INFO] [stdout] | [INFO] [stdout] 43 | exec.register("runvm", stardance::executor::mk_callback(|id, ctx, args|{ [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_id` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `args` [INFO] [stdout] --> stardance/examples/executor.rs:43:71 [INFO] [stdout] | [INFO] [stdout] 43 | exec.register("runvm", stardance::executor::mk_callback(|id, ctx, args|{ [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_args` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> stardance/examples/manager.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let mut manager = stardance::manager::Manager::new(zka.clone(), "co.volf.nomadic", None); [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> stardance/examples/executor.rs:40:5 [INFO] [stdout] | [INFO] [stdout] 40 | rcm.declare("cpu_cores", 32, 1, 2.0); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "9581172bc3c40e09e2b25205472d98d5dffc2f3d83b3592fafeedc68548a29ed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9581172bc3c40e09e2b25205472d98d5dffc2f3d83b3592fafeedc68548a29ed", kill_on_drop: false }` [INFO] [stdout] 9581172bc3c40e09e2b25205472d98d5dffc2f3d83b3592fafeedc68548a29ed