[INFO] cloning repository dgoetsch/zero-monitor
[INFO] running `"git" "clone" "--bare" "git://github.com/dgoetsch/zero-monitor.git" "work/cache/sources/gh/dgoetsch/zero-monitor"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/dgoetsch/zero-monitor'...
[INFO] running `"git" "clone" "work/cache/sources/gh/dgoetsch/zero-monitor" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/dgoetsch/zero-monitor"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/dgoetsch/zero-monitor'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dgoetsch/zero-monitor" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/dgoetsch/zero-monitor"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/dgoetsch/zero-monitor'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 375a21dceb9673ad5bb819f2470453f997b780f6
[INFO] sha for GitHub repo dgoetsch/zero-monitor: 375a21dceb9673ad5bb819f2470453f997b780f6
[INFO] validating manifest of dgoetsch/zero-monitor on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dgoetsch/zero-monitor on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dgoetsch/zero-monitor
[INFO] finished frobbing dgoetsch/zero-monitor
[INFO] frobbed toml for dgoetsch/zero-monitor written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/dgoetsch/zero-monitor/Cargo.toml
[INFO] started frobbing dgoetsch/zero-monitor
[INFO] finished frobbing dgoetsch/zero-monitor
[INFO] frobbed toml for dgoetsch/zero-monitor written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/dgoetsch/zero-monitor/Cargo.toml
[INFO] crate dgoetsch/zero-monitor already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded psutil v1.3.1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking dgoetsch/zero-monitor against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-7/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/dgoetsch/zero-monitor:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] edca490b2394e4ec48082eb1dc10819a2caaefd6f0fa650aeff5adcaf39b75cf
[INFO] running `"docker" "start" "-a" "edca490b2394e4ec48082eb1dc10819a2caaefd6f0fa650aeff5adcaf39b75cf"`
[INFO] [stderr]     Checking psutil v1.3.1
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking simplelog v0.5.3
[INFO] [stderr]     Checking monitor v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::path::PathBuf`
[INFO] [stderr]  --> src/worker/file.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::path::PathBuf;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/worker/mod.rs:12:26
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn identity() -> Box<Worker + Send> { Box::new(IdentityWorker{}) }
[INFO] [stderr]    |                          ^^^^^^^^^^^^^ help: use `dyn`: `dyn Worker + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Receiver`
[INFO] [stderr]  --> src/event_loop.rs:2:23
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync::mpsc::{Receiver, Sender};
[INFO] [stderr]   |                       ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/event_loop.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/event_loop.rs:12:14
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Link(Box<Worker + Send>, Box<Vertice>)
[INFO] [stderr]    |              ^^^^^^^^^^^^^ help: use `dyn`: `dyn Worker + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/event_loop.rs:16:28
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn new(worker: Box<Worker + Send>) -> Vertice {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^ help: use `dyn`: `dyn Worker + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/event_loop.rs:28:34
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn map(self, worker: Box<Worker + Send>) -> Vertice {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn Worker + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/event_loop.rs:79:17
[INFO] [stderr]    |
[INFO] [stderr] 79 |     worker: Box<Worker + Send >,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn Worker + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/event_loop.rs:95:39
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn new(id: String, execution: Box<Worker + Send>) -> Handler {        
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^ help: use `dyn`: `dyn Worker + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/logger.rs:16:31
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut loggers:  Vec<Box<SharedLogger>> = vec![ WriteLogger::new(log_level, Config::default(), std::io::stderr())];
[INFO] [stderr]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn SharedLogger`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::worker::Message`
[INFO] [stderr]  --> src/interval/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use super::worker::Message;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SubCommand`
[INFO] [stderr]   --> src/main.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 | use clap::{Arg, App, SubCommand};
[INFO] [stderr]    |                      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::PathBuf`
[INFO] [stderr]  --> src/worker/file.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::path::PathBuf;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/worker/mod.rs:12:26
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn identity() -> Box<Worker + Send> { Box::new(IdentityWorker{}) }
[INFO] [stderr]    |                          ^^^^^^^^^^^^^ help: use `dyn`: `dyn Worker + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Receiver`
[INFO] [stderr]  --> src/event_loop.rs:2:23
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync::mpsc::{Receiver, Sender};
[INFO] [stderr]   |                       ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/event_loop.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/event_loop.rs:12:14
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Link(Box<Worker + Send>, Box<Vertice>)
[INFO] [stderr]    |              ^^^^^^^^^^^^^ help: use `dyn`: `dyn Worker + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/event_loop.rs:16:28
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn new(worker: Box<Worker + Send>) -> Vertice {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^ help: use `dyn`: `dyn Worker + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/event_loop.rs:28:34
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn map(self, worker: Box<Worker + Send>) -> Vertice {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn Worker + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/event_loop.rs:79:17
[INFO] [stderr]    |
[INFO] [stderr] 79 |     worker: Box<Worker + Send >,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn Worker + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/event_loop.rs:95:39
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn new(id: String, execution: Box<Worker + Send>) -> Handler {        
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^ help: use `dyn`: `dyn Worker + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/logger.rs:16:31
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut loggers:  Vec<Box<SharedLogger>> = vec![ WriteLogger::new(log_level, Config::default(), std::io::stderr())];
[INFO] [stderr]    |                               ^^^^^^^^^^^^ help: use `dyn`: `dyn SharedLogger`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::worker::Message`
[INFO] [stderr]  --> src/interval/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use super::worker::Message;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SubCommand`
[INFO] [stderr]   --> src/main.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 | use clap::{Arg, App, SubCommand};
[INFO] [stderr]    |                      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `message`
[INFO] [stderr]   --> src/worker/netio.rs:24:19
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn run(&self, message: Message) -> Message {
[INFO] [stderr]    |                   ^^^^^^^ help: consider prefixing with an underscore: `_message`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/worker/file.rs:14:51
[INFO] [stderr]    |
[INFO] [stderr] 14 |                 .open(file_name.clone()).or_else(|e| File::create(file_name.clone())).unwrap()))
[INFO] [stderr]    |                                                   ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/logger.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 |                 .or_else(|err| File::open(file_name))
[INFO] [stderr]    |                           ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/event_loop.rs:168:21
[INFO] [stderr]     |
[INFO] [stderr] 168 |     pub fn register(mut self, chain: Vertice) -> Result<(String, EventLoop), EventLoopError> {
[INFO] [stderr]     |                     ----^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Deserialization`
[INFO] [stderr]   --> src/worker/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     Deserialization(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Fork`
[INFO] [stderr]   --> src/event_loop.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Fork(Vec<Box<Vertice>>, Box<Vertice>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `and_then`
[INFO] [stderr]   --> src/event_loop.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn and_then(self, chain: Vertice) -> Vertice {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Aggregate`
[INFO] [stderr]  --> src/error.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Aggregate(Box<AppError>, Box<AppError>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `aggregate`
[INFO] [stderr]   --> src/error.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn aggregate(&self, other: AppError) -> AppError {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Borrow`
[INFO] [stderr]   --> src/interval/mod.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     Borrow(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/worker/stdout.rs:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 |                 writer.write_all(&bytes[..]);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/worker/stdout.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |                 writer.write_all(b"\n");
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/worker/stdout.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |                 writer.flush();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `message`
[INFO] [stderr]   --> src/worker/netio.rs:24:19
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn run(&self, message: Message) -> Message {
[INFO] [stderr]    |                   ^^^^^^^ help: consider prefixing with an underscore: `_message`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/worker/file.rs:14:51
[INFO] [stderr]    |
[INFO] [stderr] 14 |                 .open(file_name.clone()).or_else(|e| File::create(file_name.clone())).unwrap()))
[INFO] [stderr]    |                                                   ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/logger.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 |                 .or_else(|err| File::open(file_name))
[INFO] [stderr]    |                           ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/event_loop.rs:168:21
[INFO] [stderr]     |
[INFO] [stderr] 168 |     pub fn register(mut self, chain: Vertice) -> Result<(String, EventLoop), EventLoopError> {
[INFO] [stderr]     |                     ----^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Deserialization`
[INFO] [stderr]   --> src/worker/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     Deserialization(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Fork`
[INFO] [stderr]   --> src/event_loop.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Fork(Vec<Box<Vertice>>, Box<Vertice>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `and_then`
[INFO] [stderr]   --> src/event_loop.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn and_then(self, chain: Vertice) -> Vertice {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Aggregate`
[INFO] [stderr]  --> src/error.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Aggregate(Box<AppError>, Box<AppError>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `aggregate`
[INFO] [stderr]   --> src/error.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn aggregate(&self, other: AppError) -> AppError {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Borrow`
[INFO] [stderr]   --> src/interval/mod.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     Borrow(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/worker/stdout.rs:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 |                 writer.write_all(&bytes[..]);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/worker/stdout.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |                 writer.write_all(b"\n");
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/worker/stdout.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |                 writer.flush();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.35s
[INFO] running `"docker" "inspect" "edca490b2394e4ec48082eb1dc10819a2caaefd6f0fa650aeff5adcaf39b75cf"`
[INFO] running `"docker" "rm" "-f" "edca490b2394e4ec48082eb1dc10819a2caaefd6f0fa650aeff5adcaf39b75cf"`
[INFO] [stdout] edca490b2394e4ec48082eb1dc10819a2caaefd6f0fa650aeff5adcaf39b75cf