[INFO] cloning repository https://github.com/jeremieSimon/playing_w_rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeremieSimon/playing_w_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjeremieSimon%2Fplaying_w_rust"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjeremieSimon%2Fplaying_w_rust'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d2034699141faea9507f698097887d818f3cde5c
[INFO] testing jeremieSimon/playing_w_rust against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjeremieSimon%2Fplaying_w_rust" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeremieSimon/playing_w_rust on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jeremieSimon/playing_w_rust
[INFO] finished tweaking git repo https://github.com/jeremieSimon/playing_w_rust
[INFO] tweaked toml for git repo https://github.com/jeremieSimon/playing_w_rust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jeremieSimon/playing_w_rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-3/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "+1.44.0" "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] 7af0b8c09cf68cb5f19920339f29dfb9ed5657a13a0d0b1eea34539ea667553e
[INFO] running `"docker" "start" "-a" "7af0b8c09cf68cb5f19920339f29dfb9ed5657a13a0d0b1eea34539ea667553e"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling atomic_refcell v0.1.6
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling derefable v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling bincode v1.2.1
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling n1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `sleep`
[INFO] [stderr]  --> src/main.rs:3:26
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::thread::{spawn, sleep};
[INFO] [stderr]   |                          ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::pipeline::word_count::WordCount`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use crate::pipeline::word_count::WordCount;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::borrow::BorrowMut;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env::var`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::env::var;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::cell::RefCell;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `uuid::Uuid`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use uuid::Uuid;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `atomic_refcell`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use atomic_refcell;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::future::PollableFuture`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use crate::future::PollableFuture;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/io/mod.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 |     Ok(((io_sender, io_receiver)))
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::task::Poll`
[INFO] [stderr]  --> src/future/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::task::Poll;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `atomic_refcell::AtomicRefCell`
[INFO] [stderr]  --> src/future/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use atomic_refcell::AtomicRefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `DerefMut`, `Deref`
[INFO] [stderr]  --> src/future/mod.rs:6:16
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::ops::{DerefMut, Deref};
[INFO] [stderr]   |                ^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stderr]  --> src/future/mod.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::borrow::BorrowMut;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable if-let pattern
[INFO] [stderr]   --> src/future/mod.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 | /             if let r = self.get() {
[INFO] [stderr] 37 | |                 if r.is_some() {
[INFO] [stderr] 38 | |                     return r;
[INFO] [stderr] 39 | |                 }
[INFO] [stderr] 40 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `io_out_sender`
[INFO] [stderr]   --> src/main.rs:58:10
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let (io_out_sender, io_out_receiver) = map_like_seq.compute_async(work_sender, work_receiver);
[INFO] [stderr]    |          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_io_out_sender`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `work_sender`
[INFO] [stderr]   --> src/pipeline/par_map.rs:50:26
[INFO] [stderr]    |
[INFO] [stderr] 50 |                          work_sender: Sender<Vec<u8>>,
[INFO] [stderr]    |                          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_work_sender`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `io_sender`
[INFO] [stderr]   --> src/io/mod.rs:25:10
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let (io_sender, io_receiver) = read(filename).unwrap();
[INFO] [stderr]    |          ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_io_sender`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `as_string`
[INFO] [stderr]   --> src/io/mod.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |         let as_string = std::str::from_utf8(&val).unwrap();
[INFO] [stderr]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_as_string`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/graph/io_graph.rs:115:18
[INFO] [stderr]     |
[INFO] [stderr] 115 |             for (name, f) in name_and_funcs {
[INFO] [stderr]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `apply`
[INFO] [stderr]   --> src/pipeline/par_map.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn apply(&self, datum: Vec<u8>) -> Vec<u8> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `map_async`
[INFO] [stderr]   --> src/pipeline/par_map.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn map_async(&self, data: Vec<Vec<u8>>) -> Vec<JoinHandle<Vec<u8>>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `apply`
[INFO] [stderr]   --> src/graph/concurrent.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn apply(&self, datum: Vec<T>) -> Vec<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `empty`
[INFO] [stderr]   --> src/graph/concurrent.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn empty(f: GraphLikeFunc<T>, m: String) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `name`
[INFO] [stderr]   --> src/graph/concurrent.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     pub (in crate::graph) name: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `apply`
[INFO] [stderr]    --> src/graph/concurrent.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn apply(&self, datum: Vec<T>) -> Vec<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/future/mod.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn new() -> Future<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `yo`
[INFO] [stderr]   --> src/future/mod.rs:74:8
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub fn yo() -> Arc<impl PollableFuture<String>> {
[INFO] [stderr]    |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     io::write(filename_out, io_out_receiver);
[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/pipeline/par_map.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |             io_out_sender.send(self.apply_async(work));
[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/io/mod.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         io_sender.send(line.unwrap().as_bytes().to_owned());
[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/io/mod.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         work_sender.send(bytes);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 33 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 59.89s
[INFO] running `"docker" "inspect" "7af0b8c09cf68cb5f19920339f29dfb9ed5657a13a0d0b1eea34539ea667553e"`
[INFO] running `"docker" "rm" "-f" "7af0b8c09cf68cb5f19920339f29dfb9ed5657a13a0d0b1eea34539ea667553e"`
[INFO] [stdout] 7af0b8c09cf68cb5f19920339f29dfb9ed5657a13a0d0b1eea34539ea667553e
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "+1.44.0" "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] 156fcf07350a43a847a5d9e562522f55c97c99d22fe22483d8b290132cbcd653
[INFO] running `"docker" "start" "-a" "156fcf07350a43a847a5d9e562522f55c97c99d22fe22483d8b290132cbcd653"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling n1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `sleep`
[INFO] [stderr]  --> src/main.rs:3:26
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::thread::{spawn, sleep};
[INFO] [stderr]   |                          ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::pipeline::word_count::WordCount`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use crate::pipeline::word_count::WordCount;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::borrow::BorrowMut;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env::var`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::env::var;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::cell::RefCell;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `uuid::Uuid`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use uuid::Uuid;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `atomic_refcell`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use atomic_refcell;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::future::PollableFuture`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use crate::future::PollableFuture;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/io/mod.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 |     Ok(((io_sender, io_receiver)))
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::task::Poll`
[INFO] [stderr]  --> src/future/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::task::Poll;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `atomic_refcell::AtomicRefCell`
[INFO] [stderr]  --> src/future/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use atomic_refcell::AtomicRefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `DerefMut`, `Deref`
[INFO] [stderr]  --> src/future/mod.rs:6:16
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::ops::{DerefMut, Deref};
[INFO] [stderr]   |                ^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stderr]  --> src/future/mod.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::borrow::BorrowMut;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable if-let pattern
[INFO] [stderr]   --> src/future/mod.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 | /             if let r = self.get() {
[INFO] [stderr] 37 | |                 if r.is_some() {
[INFO] [stderr] 38 | |                     return r;
[INFO] [stderr] 39 | |                 }
[INFO] [stderr] 40 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `io_out_sender`
[INFO] [stderr]   --> src/main.rs:58:10
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let (io_out_sender, io_out_receiver) = map_like_seq.compute_async(work_sender, work_receiver);
[INFO] [stderr]    |          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_io_out_sender`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `work_sender`
[INFO] [stderr]   --> src/pipeline/par_map.rs:50:26
[INFO] [stderr]    |
[INFO] [stderr] 50 |                          work_sender: Sender<Vec<u8>>,
[INFO] [stderr]    |                          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_work_sender`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `io_sender`
[INFO] [stderr]   --> src/io/mod.rs:25:10
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let (io_sender, io_receiver) = read(filename).unwrap();
[INFO] [stderr]    |          ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_io_sender`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `as_string`
[INFO] [stderr]   --> src/io/mod.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |         let as_string = std::str::from_utf8(&val).unwrap();
[INFO] [stderr]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_as_string`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/graph/io_graph.rs:115:18
[INFO] [stderr]     |
[INFO] [stderr] 115 |             for (name, f) in name_and_funcs {
[INFO] [stderr]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `apply`
[INFO] [stderr]   --> src/pipeline/par_map.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn apply(&self, datum: Vec<u8>) -> Vec<u8> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `map_async`
[INFO] [stderr]   --> src/pipeline/par_map.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn map_async(&self, data: Vec<Vec<u8>>) -> Vec<JoinHandle<Vec<u8>>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `apply`
[INFO] [stderr]   --> src/graph/concurrent.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn apply(&self, datum: Vec<T>) -> Vec<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `empty`
[INFO] [stderr]   --> src/graph/concurrent.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn empty(f: GraphLikeFunc<T>, m: String) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `name`
[INFO] [stderr]   --> src/graph/concurrent.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     pub (in crate::graph) name: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `apply`
[INFO] [stderr]    --> src/graph/concurrent.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn apply(&self, datum: Vec<T>) -> Vec<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/future/mod.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn new() -> Future<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `yo`
[INFO] [stderr]   --> src/future/mod.rs:74:8
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub fn yo() -> Arc<impl PollableFuture<String>> {
[INFO] [stderr]    |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     io::write(filename_out, io_out_receiver);
[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/pipeline/par_map.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |             io_out_sender.send(self.apply_async(work));
[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/io/mod.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         io_sender.send(line.unwrap().as_bytes().to_owned());
[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/io/mod.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         work_sender.send(bytes);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 33 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `"docker" "inspect" "156fcf07350a43a847a5d9e562522f55c97c99d22fe22483d8b290132cbcd653"`
[INFO] running `"docker" "rm" "-f" "156fcf07350a43a847a5d9e562522f55c97c99d22fe22483d8b290132cbcd653"`
[INFO] [stdout] 156fcf07350a43a847a5d9e562522f55c97c99d22fe22483d8b290132cbcd653
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1c7075c1277e6e632edb1100100e9e3239b574d677c8e275989fe254da8cea93
[INFO] running `"docker" "start" "-a" "1c7075c1277e6e632edb1100100e9e3239b574d677c8e275989fe254da8cea93"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `sleep`
[INFO] [stderr]  --> src/main.rs:3:26
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::thread::{spawn, sleep};
[INFO] [stderr]   |                          ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::pipeline::word_count::WordCount`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use crate::pipeline::word_count::WordCount;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::borrow::BorrowMut;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env::var`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::env::var;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::cell::RefCell;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `uuid::Uuid`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use uuid::Uuid;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `atomic_refcell`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use atomic_refcell;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::future::PollableFuture`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use crate::future::PollableFuture;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/io/mod.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 |     Ok(((io_sender, io_receiver)))
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::task::Poll`
[INFO] [stderr]  --> src/future/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::task::Poll;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `atomic_refcell::AtomicRefCell`
[INFO] [stderr]  --> src/future/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use atomic_refcell::AtomicRefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `DerefMut`, `Deref`
[INFO] [stderr]  --> src/future/mod.rs:6:16
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::ops::{DerefMut, Deref};
[INFO] [stderr]   |                ^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stderr]  --> src/future/mod.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::borrow::BorrowMut;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable if-let pattern
[INFO] [stderr]   --> src/future/mod.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 | /             if let r = self.get() {
[INFO] [stderr] 37 | |                 if r.is_some() {
[INFO] [stderr] 38 | |                     return r;
[INFO] [stderr] 39 | |                 }
[INFO] [stderr] 40 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `io_out_sender`
[INFO] [stderr]   --> src/main.rs:58:10
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let (io_out_sender, io_out_receiver) = map_like_seq.compute_async(work_sender, work_receiver);
[INFO] [stderr]    |          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_io_out_sender`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `work_sender`
[INFO] [stderr]   --> src/pipeline/par_map.rs:50:26
[INFO] [stderr]    |
[INFO] [stderr] 50 |                          work_sender: Sender<Vec<u8>>,
[INFO] [stderr]    |                          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_work_sender`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `io_sender`
[INFO] [stderr]   --> src/io/mod.rs:25:10
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let (io_sender, io_receiver) = read(filename).unwrap();
[INFO] [stderr]    |          ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_io_sender`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `as_string`
[INFO] [stderr]   --> src/io/mod.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |         let as_string = std::str::from_utf8(&val).unwrap();
[INFO] [stderr]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_as_string`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/graph/io_graph.rs:115:18
[INFO] [stderr]     |
[INFO] [stderr] 115 |             for (name, f) in name_and_funcs {
[INFO] [stderr]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `apply`
[INFO] [stderr]   --> src/pipeline/par_map.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn apply(&self, datum: Vec<u8>) -> Vec<u8> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `map_async`
[INFO] [stderr]   --> src/pipeline/par_map.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn map_async(&self, data: Vec<Vec<u8>>) -> Vec<JoinHandle<Vec<u8>>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `apply`
[INFO] [stderr]   --> src/graph/concurrent.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn apply(&self, datum: Vec<T>) -> Vec<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `empty`
[INFO] [stderr]   --> src/graph/concurrent.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn empty(f: GraphLikeFunc<T>, m: String) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `name`
[INFO] [stderr]   --> src/graph/concurrent.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     pub (in crate::graph) name: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `apply`
[INFO] [stderr]    --> src/graph/concurrent.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn apply(&self, datum: Vec<T>) -> Vec<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/future/mod.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn new() -> Future<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `yo`
[INFO] [stderr]   --> src/future/mod.rs:74:8
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub fn yo() -> Arc<impl PollableFuture<String>> {
[INFO] [stderr]    |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     io::write(filename_out, io_out_receiver);
[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/pipeline/par_map.rs:59:13
[INFO] [stderr]    |
[INFO] [stderr] 59 |             io_out_sender.send(self.apply_async(work));
[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/io/mod.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         io_sender.send(line.unwrap().as_bytes().to_owned());
[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/io/mod.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         work_sender.send(bytes);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 33 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/n1-3a40b209df8eb2f9
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1c7075c1277e6e632edb1100100e9e3239b574d677c8e275989fe254da8cea93"`
[INFO] running `"docker" "rm" "-f" "1c7075c1277e6e632edb1100100e9e3239b574d677c8e275989fe254da8cea93"`
[INFO] [stdout] 1c7075c1277e6e632edb1100100e9e3239b574d677c8e275989fe254da8cea93