[INFO] cloning repository https://github.com/robertblackwell/reg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robertblackwell/reg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobertblackwell%2Freg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobertblackwell%2Freg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a7526be4bd23d8ed449fdaa90430464c1d3f349
[INFO] checking robertblackwell/reg against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobertblackwell%2Freg" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/robertblackwell/reg on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/robertblackwell/reg
[INFO] finished tweaking git repo https://github.com/robertblackwell/reg
[INFO] tweaked toml for git repo https://github.com/robertblackwell/reg written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/robertblackwell/reg already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a473a04ac5fc8bf9637a164024267c05a3517ae9e6432b3dd715caaef885d89
[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" "6a473a04ac5fc8bf9637a164024267c05a3517ae9e6432b3dd715caaef885d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a473a04ac5fc8bf9637a164024267c05a3517ae9e6432b3dd715caaef885d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a473a04ac5fc8bf9637a164024267c05a3517ae9e6432b3dd715caaef885d89", kill_on_drop: false }`
[INFO] [stdout] 6a473a04ac5fc8bf9637a164024267c05a3517ae9e6432b3dd715caaef885d89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ba7c52d689054e67dcd80ef385e0833e64e56ffcab483737ec014f964220c5b
[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" "0ba7c52d689054e67dcd80ef385e0833e64e56ffcab483737ec014f964220c5b", kill_on_drop: false }`
[INFO] [stderr]     Checking reg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/server.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `Ipv6Addr`
[INFO] [stdout]  --> src/server.rs:5:40
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::net::{TcpListener, TcpStream, IpAddr, Ipv4Addr, Ipv6Addr};
[INFO] [stdout]   |                                        ^^^^^^  ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/server.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FromRawFd`, `IntoRawFd`
[INFO] [stdout]  --> src/server.rs:7:34
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::os::unix::io::{AsRawFd, IntoRawFd, FromRawFd};
[INFO] [stdout]   |                                  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]   --> src/server.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         while true {
[INFO] [stdout]    |         ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]  --> src/queue.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::{Arc, Condvar, Mutex};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/server.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `Ipv6Addr`
[INFO] [stdout]  --> src/server.rs:5:40
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::net::{TcpListener, TcpStream, IpAddr, Ipv4Addr, Ipv6Addr};
[INFO] [stdout]   |                                        ^^^^^^  ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/server.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FromRawFd`, `IntoRawFd`
[INFO] [stdout]  --> src/server.rs:7:34
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::os::unix::io::{AsRawFd, IntoRawFd, FromRawFd};
[INFO] [stdout]   |                                  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]   --> src/server.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         while true {
[INFO] [stdout]    |         ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]  --> src/queue.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::{Arc, Condvar, Mutex};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `queue`
[INFO] [stdout]   --> src/server.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn run(queue: Arc<Queue>) {
[INFO] [stdout]    |            ^^^^^ help: if this is intentional, prefix it with an underscore: `_queue`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `workers`
[INFO] [stdout]   --> src/server.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut workers: Vec<Worker> = Vec::with_capacity(self.m_nbr_workers);
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_workers`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ix`
[INFO] [stdout]    --> src/server.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         for ix in 0..self.m_nbr_workers {
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_ix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/queue.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut result: Option<TcpStream> = None;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/server.rs:70:21
[INFO] [stdout]    |
[INFO] [stdout] 70 |                 let mut continue_flag = true;
[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 variable: `queue`
[INFO] [stdout]   --> src/server.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn run(queue: Arc<Queue>) {
[INFO] [stdout]    |            ^^^^^ help: if this is intentional, prefix it with an underscore: `_queue`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `workers`
[INFO] [stdout]   --> src/server.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut workers: Vec<Worker> = Vec::with_capacity(self.m_nbr_workers);
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_workers`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ix`
[INFO] [stdout]    --> src/server.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         for ix in 0..self.m_nbr_workers {
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_ix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/queue.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut result: Option<TcpStream> = None;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/server.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut workers: Vec<Worker> = Vec::with_capacity(self.m_nbr_workers);
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `NBR_WORKERS`
[INFO] [stdout]   --> src/server.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const NBR_WORKERS: usize = 5;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/server.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn run(queue: Arc<Queue>) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `request_handler`
[INFO] [stdout]   --> src/server.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn request_handler() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `NBR_WORKERS`
[INFO] [stdout]  --> src/queue.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | const NBR_WORKERS: usize = 5;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `QUEUE_MAX`
[INFO] [stdout]  --> src/queue.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | const QUEUE_MAX: usize = 5;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/server.rs:70:21
[INFO] [stdout]    |
[INFO] [stdout] 70 |                 let mut continue_flag = true;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/server.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let mut workers: Vec<Worker> = Vec::with_capacity(self.m_nbr_workers);
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `NBR_WORKERS`
[INFO] [stdout]   --> src/server.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const NBR_WORKERS: usize = 5;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/server.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn run(queue: Arc<Queue>) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `request_handler`
[INFO] [stdout]   --> src/server.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn request_handler() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `NBR_WORKERS`
[INFO] [stdout]  --> src/queue.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | const NBR_WORKERS: usize = 5;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `QUEUE_MAX`
[INFO] [stdout]  --> src/queue.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | const QUEUE_MAX: usize = 5;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "0ba7c52d689054e67dcd80ef385e0833e64e56ffcab483737ec014f964220c5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ba7c52d689054e67dcd80ef385e0833e64e56ffcab483737ec014f964220c5b", kill_on_drop: false }`
[INFO] [stdout] 0ba7c52d689054e67dcd80ef385e0833e64e56ffcab483737ec014f964220c5b