[INFO] cloning repository https://github.com/z4122/ss
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/z4122/ss" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fz4122%2Fss"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fz4122%2Fss'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f145a77dd3ef87d037f53d6c2026368d3e662fac
[INFO] testing z4122/ss against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fz4122%2Fss" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/z4122/ss 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/z4122/ss
[INFO] finished tweaking git repo https://github.com/z4122/ss
[INFO] tweaked toml for git repo https://github.com/z4122/ss written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/z4122/ss 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] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] 339c8182327c4c8fa55101c8d8d50db85a2dd0226183d6736f573b27e90faf9c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "339c8182327c4c8fa55101c8d8d50db85a2dd0226183d6736f573b27e90faf9c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
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[INFO] [stderr] warning: unused import: `client::Client`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use client::Client;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BaseUrlError`, `BaseUrl`, `TryFrom`, `Url`
[INFO] [stderr]   --> src/main.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 | use base_url::{ BaseUrl, BaseUrlError,Url, TryFrom };
[INFO] [stderr]    |                 ^^^^^^^  ^^^^^^^^^^^^ ^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::parse::parse_url`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use crate::parse::parse_url;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Response`, `Result`
[INFO] [stderr]  --> src/parse/mod.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::client::{Response,Result};
[INFO] [stderr]   |                     ^^^^^^^^ ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/parse/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `curl::easy::Easy`
[INFO] [stderr]  --> src/client/myclient.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use curl::easy::Easy;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RefMut`
[INFO] [stderr]  --> src/client/myclient.rs:5:26
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::cell::{RefCell, RefMut};
[INFO] [stderr]   |                          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Backtrace`, `Context`, `ResultExt`
[INFO] [stderr]  --> src/client/myclient.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | use failure::{Backtrace, Context, Fail, ResultExt};
[INFO] [stderr]   |               ^^^^^^^^^  ^^^^^^^        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/client/myclient.rs:90:16
[INFO] [stderr]    |
[INFO] [stderr] 90 |     read: &mut FnMut(&mut [u8]) -> usize) -> Result<Response,Error> {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut [u8]) -> usize`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/mod.rs:188:16
[INFO] [stderr]     |
[INFO] [stderr] 188 |     read: &mut FnMut(&mut [u8]) -> usize) -> Result<Response> {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut [u8]) -> usize`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/mod.rs:299:32
[INFO] [stderr]     |
[INFO] [stderr] 299 |     fn cause(&self) -> Option<&Fail> {
[INFO] [stderr]     |                                ^^^^ help: use `dyn`: `dyn Fail`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/parse/mod.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         Err(e) => {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Get`
[INFO] [stderr]   --> src/client/myclient.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Get,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Head`
[INFO] [stderr]   --> src/client/myclient.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Head,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Post`
[INFO] [stderr]   --> src/client/myclient.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Post,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pub`
[INFO] [stderr]   --> src/client/myclient.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Pub,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Delete`
[INFO] [stderr]   --> src/client/myclient.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Delete,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RequestFailed`
[INFO] [stderr]    --> src/client/myclient.rs:156:5
[INFO] [stderr]     |
[INFO] [stderr] 156 |     RequestFailed,
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidJsonBody`
[INFO] [stderr]    --> src/client/myclient.rs:158:5
[INFO] [stderr]     |
[INFO] [stderr] 158 |     InvalidJsonBody,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidJson`
[INFO] [stderr]    --> src/client/myclient.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 |     InvalidJson,
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Result`
[INFO] [stderr]   --> src/client/mod.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub type Result<T> = std::result::Result<T, failure::Error>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Get`
[INFO] [stderr]   --> src/client/mod.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Get,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Head`
[INFO] [stderr]   --> src/client/mod.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Head,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Post`
[INFO] [stderr]   --> src/client/mod.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Post,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Put`
[INFO] [stderr]   --> src/client/mod.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Put,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Delete`
[INFO] [stderr]   --> src/client/mod.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     Delete,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Client`
[INFO] [stderr]   --> src/client/mod.rs:46:12
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub struct Client {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/client/mod.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn new(base_url: &str) -> Client {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_user_agent`
[INFO] [stderr]   --> src/client/mod.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn set_user_agent(&mut self, user_agent: &str) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `request`
[INFO] [stderr]   --> src/client/mod.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn request(&self, method: Method, endpoint: &str) -> Result<Request> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/client/mod.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub fn get(&self, endpoint: &str) -> Result<Response> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `post`
[INFO] [stderr]   --> src/client/mod.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     pub fn post<S: Serialize>(&self, endpoint: &str, body: &S) -> Result<Response> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `put`
[INFO] [stderr]   --> src/client/mod.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     pub fn put<S: Serialize>(&self, endpoint: &str, body: &S) -> Result<Response> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `delete`
[INFO] [stderr]   --> src/client/mod.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     pub fn delete(&self, endpoint: &str) -> Result<Response> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Request`
[INFO] [stderr]    --> src/client/mod.rs:104:12
[INFO] [stderr]     |
[INFO] [stderr] 104 | pub struct Request<'a> {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/client/mod.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 | /     pub fn new(
[INFO] [stderr] 113 | |         mut handle: RefMut<'a, curl::easy::Easy>,
[INFO] [stderr] 114 | |         method: Method,
[INFO] [stderr] 115 | |         url: &str,
[INFO] [stderr] ...   |
[INFO] [stderr] 134 | |         })
[INFO] [stderr] 135 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_header`
[INFO] [stderr]    --> src/client/mod.rs:138:5
[INFO] [stderr]     |
[INFO] [stderr] 138 |     pub fn with_header(mut self, key: &str, value: &str) -> Result<Request<'a>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_user_agent`
[INFO] [stderr]    --> src/client/mod.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     pub fn with_user_agent(mut self, ua: &str) -> Result<Request<'a>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_arguments`
[INFO] [stderr]    --> src/client/mod.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     pub fn with_arguments(mut self, args: &str) -> Result<Request<'a>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_json_body`
[INFO] [stderr]    --> src/client/mod.rs:156:5
[INFO] [stderr]     |
[INFO] [stderr] 156 |     pub fn with_json_body<S: Serialize>(mut self, body: &S) -> Result<Request<'a>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `send`
[INFO] [stderr]    --> src/client/mod.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 |     pub fn send(mut self) -> Result<Response> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `handle_request`
[INFO] [stderr]    --> src/client/mod.rs:186:4
[INFO] [stderr]     |
[INFO] [stderr] 186 | fn handle_request(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `status`
[INFO] [stderr]    --> src/client/mod.rs:230:5
[INFO] [stderr]     |
[INFO] [stderr] 230 |     pub fn status(&self) -> HttpStatus {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `failed`
[INFO] [stderr]    --> src/client/mod.rs:234:5
[INFO] [stderr]     |
[INFO] [stderr] 234 |     pub fn failed(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ok`
[INFO] [stderr]    --> src/client/mod.rs:238:5
[INFO] [stderr]     |
[INFO] [stderr] 238 |     pub fn ok(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_header`
[INFO] [stderr]    --> src/client/mod.rs:242:5
[INFO] [stderr]     |
[INFO] [stderr] 242 |     pub fn get_header(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_body`
[INFO] [stderr]    --> src/client/mod.rs:252:5
[INFO] [stderr]     |
[INFO] [stderr] 252 |     pub fn get_body(&self) -> Result<Vec<u8>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `deserialize`
[INFO] [stderr]    --> src/client/mod.rs:264:5
[INFO] [stderr]     |
[INFO] [stderr] 264 |     pub fn deserialize<T: DeserializeOwned>(&self) -> Result<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidJsonBody`
[INFO] [stderr]    --> src/client/mod.rs:281:5
[INFO] [stderr]     |
[INFO] [stderr] 281 |     InvalidJsonBody,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidJson`
[INFO] [stderr]    --> src/client/mod.rs:283:5
[INFO] [stderr]     |
[INFO] [stderr] 283 |     InvalidJson,
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `kind`
[INFO] [stderr]    --> src/client/mod.rs:293:5
[INFO] [stderr]     |
[INFO] [stderr] 293 |     pub fn kind(&self) -> ErrorKind {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `produce_map`
[INFO] [stderr]   --> src/main.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn produce_map() -> (Vec<i32>,Vec<i32>) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `content_to_cipher`
[INFO] [stderr]   --> src/main.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn content_to_cipher(input:&str,map:Vec<i32>) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cipher_to_content`
[INFO] [stderr]   --> src/main.rs:49:4
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn cipher_to_content(input:&str,map:Vec<i32>) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/parse/mod.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         myclient.append_headers(temps);
[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/client/myclient.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         handle.get(true);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 56 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 02s
[INFO] running `"docker" "inspect" "339c8182327c4c8fa55101c8d8d50db85a2dd0226183d6736f573b27e90faf9c"`
[INFO] running `"docker" "rm" "-f" "339c8182327c4c8fa55101c8d8d50db85a2dd0226183d6736f573b27e90faf9c"`
[INFO] [stdout] 339c8182327c4c8fa55101c8d8d50db85a2dd0226183d6736f573b27e90faf9c
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] c6630f118552cb47268d0c04754bb613a7b04c5c254e5e593bd593f13ca5cf95
[INFO] running `"docker" "start" "-a" "c6630f118552cb47268d0c04754bb613a7b04c5c254e5e593bd593f13ca5cf95"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling net v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `client::Client`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use client::Client;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BaseUrlError`, `BaseUrl`, `TryFrom`, `Url`
[INFO] [stderr]   --> src/main.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 | use base_url::{ BaseUrl, BaseUrlError,Url, TryFrom };
[INFO] [stderr]    |                 ^^^^^^^  ^^^^^^^^^^^^ ^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::parse::parse_url`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use crate::parse::parse_url;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Response`, `Result`
[INFO] [stderr]  --> src/parse/mod.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::client::{Response,Result};
[INFO] [stderr]   |                     ^^^^^^^^ ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/parse/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `curl::easy::Easy`
[INFO] [stderr]  --> src/client/myclient.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use curl::easy::Easy;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RefMut`
[INFO] [stderr]  --> src/client/myclient.rs:5:26
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::cell::{RefCell, RefMut};
[INFO] [stderr]   |                          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Backtrace`, `Context`, `ResultExt`
[INFO] [stderr]  --> src/client/myclient.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | use failure::{Backtrace, Context, Fail, ResultExt};
[INFO] [stderr]   |               ^^^^^^^^^  ^^^^^^^        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/client/myclient.rs:90:16
[INFO] [stderr]    |
[INFO] [stderr] 90 |     read: &mut FnMut(&mut [u8]) -> usize) -> Result<Response,Error> {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut [u8]) -> usize`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/mod.rs:188:16
[INFO] [stderr]     |
[INFO] [stderr] 188 |     read: &mut FnMut(&mut [u8]) -> usize) -> Result<Response> {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut [u8]) -> usize`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/mod.rs:299:32
[INFO] [stderr]     |
[INFO] [stderr] 299 |     fn cause(&self) -> Option<&Fail> {
[INFO] [stderr]     |                                ^^^^ help: use `dyn`: `dyn Fail`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/parse/mod.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         Err(e) => {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Get`
[INFO] [stderr]   --> src/client/myclient.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Get,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Head`
[INFO] [stderr]   --> src/client/myclient.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Head,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Post`
[INFO] [stderr]   --> src/client/myclient.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Post,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pub`
[INFO] [stderr]   --> src/client/myclient.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Pub,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Delete`
[INFO] [stderr]   --> src/client/myclient.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Delete,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RequestFailed`
[INFO] [stderr]    --> src/client/myclient.rs:156:5
[INFO] [stderr]     |
[INFO] [stderr] 156 |     RequestFailed,
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidJsonBody`
[INFO] [stderr]    --> src/client/myclient.rs:158:5
[INFO] [stderr]     |
[INFO] [stderr] 158 |     InvalidJsonBody,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidJson`
[INFO] [stderr]    --> src/client/myclient.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 |     InvalidJson,
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Result`
[INFO] [stderr]   --> src/client/mod.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub type Result<T> = std::result::Result<T, failure::Error>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Get`
[INFO] [stderr]   --> src/client/mod.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Get,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Head`
[INFO] [stderr]   --> src/client/mod.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Head,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Post`
[INFO] [stderr]   --> src/client/mod.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Post,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Put`
[INFO] [stderr]   --> src/client/mod.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Put,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Delete`
[INFO] [stderr]   --> src/client/mod.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     Delete,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Client`
[INFO] [stderr]   --> src/client/mod.rs:46:12
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub struct Client {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/client/mod.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn new(base_url: &str) -> Client {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_user_agent`
[INFO] [stderr]   --> src/client/mod.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn set_user_agent(&mut self, user_agent: &str) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `request`
[INFO] [stderr]   --> src/client/mod.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn request(&self, method: Method, endpoint: &str) -> Result<Request> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/client/mod.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub fn get(&self, endpoint: &str) -> Result<Response> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `post`
[INFO] [stderr]   --> src/client/mod.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     pub fn post<S: Serialize>(&self, endpoint: &str, body: &S) -> Result<Response> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `put`
[INFO] [stderr]   --> src/client/mod.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     pub fn put<S: Serialize>(&self, endpoint: &str, body: &S) -> Result<Response> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `delete`
[INFO] [stderr]   --> src/client/mod.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     pub fn delete(&self, endpoint: &str) -> Result<Response> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Request`
[INFO] [stderr]    --> src/client/mod.rs:104:12
[INFO] [stderr]     |
[INFO] [stderr] 104 | pub struct Request<'a> {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/client/mod.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 | /     pub fn new(
[INFO] [stderr] 113 | |         mut handle: RefMut<'a, curl::easy::Easy>,
[INFO] [stderr] 114 | |         method: Method,
[INFO] [stderr] 115 | |         url: &str,
[INFO] [stderr] ...   |
[INFO] [stderr] 134 | |         })
[INFO] [stderr] 135 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_header`
[INFO] [stderr]    --> src/client/mod.rs:138:5
[INFO] [stderr]     |
[INFO] [stderr] 138 |     pub fn with_header(mut self, key: &str, value: &str) -> Result<Request<'a>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_user_agent`
[INFO] [stderr]    --> src/client/mod.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     pub fn with_user_agent(mut self, ua: &str) -> Result<Request<'a>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_arguments`
[INFO] [stderr]    --> src/client/mod.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     pub fn with_arguments(mut self, args: &str) -> Result<Request<'a>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_json_body`
[INFO] [stderr]    --> src/client/mod.rs:156:5
[INFO] [stderr]     |
[INFO] [stderr] 156 |     pub fn with_json_body<S: Serialize>(mut self, body: &S) -> Result<Request<'a>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `send`
[INFO] [stderr]    --> src/client/mod.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 |     pub fn send(mut self) -> Result<Response> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `handle_request`
[INFO] [stderr]    --> src/client/mod.rs:186:4
[INFO] [stderr]     |
[INFO] [stderr] 186 | fn handle_request(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `status`
[INFO] [stderr]    --> src/client/mod.rs:230:5
[INFO] [stderr]     |
[INFO] [stderr] 230 |     pub fn status(&self) -> HttpStatus {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `failed`
[INFO] [stderr]    --> src/client/mod.rs:234:5
[INFO] [stderr]     |
[INFO] [stderr] 234 |     pub fn failed(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ok`
[INFO] [stderr]    --> src/client/mod.rs:238:5
[INFO] [stderr]     |
[INFO] [stderr] 238 |     pub fn ok(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_header`
[INFO] [stderr]    --> src/client/mod.rs:242:5
[INFO] [stderr]     |
[INFO] [stderr] 242 |     pub fn get_header(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_body`
[INFO] [stderr]    --> src/client/mod.rs:252:5
[INFO] [stderr]     |
[INFO] [stderr] 252 |     pub fn get_body(&self) -> Result<Vec<u8>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `deserialize`
[INFO] [stderr]    --> src/client/mod.rs:264:5
[INFO] [stderr]     |
[INFO] [stderr] 264 |     pub fn deserialize<T: DeserializeOwned>(&self) -> Result<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidJsonBody`
[INFO] [stderr]    --> src/client/mod.rs:281:5
[INFO] [stderr]     |
[INFO] [stderr] 281 |     InvalidJsonBody,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidJson`
[INFO] [stderr]    --> src/client/mod.rs:283:5
[INFO] [stderr]     |
[INFO] [stderr] 283 |     InvalidJson,
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `kind`
[INFO] [stderr]    --> src/client/mod.rs:293:5
[INFO] [stderr]     |
[INFO] [stderr] 293 |     pub fn kind(&self) -> ErrorKind {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `produce_map`
[INFO] [stderr]   --> src/main.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn produce_map() -> (Vec<i32>,Vec<i32>) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `content_to_cipher`
[INFO] [stderr]   --> src/main.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn content_to_cipher(input:&str,map:Vec<i32>) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cipher_to_content`
[INFO] [stderr]   --> src/main.rs:49:4
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn cipher_to_content(input:&str,map:Vec<i32>) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/parse/mod.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         myclient.append_headers(temps);
[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/client/myclient.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         handle.get(true);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 56 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `"docker" "inspect" "c6630f118552cb47268d0c04754bb613a7b04c5c254e5e593bd593f13ca5cf95"`
[INFO] running `"docker" "rm" "-f" "c6630f118552cb47268d0c04754bb613a7b04c5c254e5e593bd593f13ca5cf95"`
[INFO] [stdout] c6630f118552cb47268d0c04754bb613a7b04c5c254e5e593bd593f13ca5cf95
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 0eb514e058a5cf0a6954876edea1838ba905f975e8322f8580931661d53516be
[INFO] running `"docker" "start" "-a" "0eb514e058a5cf0a6954876edea1838ba905f975e8322f8580931661d53516be"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `client::Client`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use client::Client;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BaseUrlError`, `BaseUrl`, `TryFrom`, `Url`
[INFO] [stderr]   --> src/main.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 | use base_url::{ BaseUrl, BaseUrlError,Url, TryFrom };
[INFO] [stderr]    |                 ^^^^^^^  ^^^^^^^^^^^^ ^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::parse::parse_url`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use crate::parse::parse_url;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Response`, `Result`
[INFO] [stderr]  --> src/parse/mod.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::client::{Response,Result};
[INFO] [stderr]   |                     ^^^^^^^^ ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/parse/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `curl::easy::Easy`
[INFO] [stderr]  --> src/client/myclient.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use curl::easy::Easy;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RefMut`
[INFO] [stderr]  --> src/client/myclient.rs:5:26
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::cell::{RefCell, RefMut};
[INFO] [stderr]   |                          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Backtrace`, `Context`, `ResultExt`
[INFO] [stderr]  --> src/client/myclient.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | use failure::{Backtrace, Context, Fail, ResultExt};
[INFO] [stderr]   |               ^^^^^^^^^  ^^^^^^^        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/client/myclient.rs:90:16
[INFO] [stderr]    |
[INFO] [stderr] 90 |     read: &mut FnMut(&mut [u8]) -> usize) -> Result<Response,Error> {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut [u8]) -> usize`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/mod.rs:188:16
[INFO] [stderr]     |
[INFO] [stderr] 188 |     read: &mut FnMut(&mut [u8]) -> usize) -> Result<Response> {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut [u8]) -> usize`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client/mod.rs:299:32
[INFO] [stderr]     |
[INFO] [stderr] 299 |     fn cause(&self) -> Option<&Fail> {
[INFO] [stderr]     |                                ^^^^ help: use `dyn`: `dyn Fail`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/parse/mod.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         Err(e) => {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Get`
[INFO] [stderr]   --> src/client/myclient.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Get,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Head`
[INFO] [stderr]   --> src/client/myclient.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Head,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Post`
[INFO] [stderr]   --> src/client/myclient.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Post,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pub`
[INFO] [stderr]   --> src/client/myclient.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Pub,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Delete`
[INFO] [stderr]   --> src/client/myclient.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Delete,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RequestFailed`
[INFO] [stderr]    --> src/client/myclient.rs:156:5
[INFO] [stderr]     |
[INFO] [stderr] 156 |     RequestFailed,
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidJsonBody`
[INFO] [stderr]    --> src/client/myclient.rs:158:5
[INFO] [stderr]     |
[INFO] [stderr] 158 |     InvalidJsonBody,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidJson`
[INFO] [stderr]    --> src/client/myclient.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 |     InvalidJson,
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Result`
[INFO] [stderr]   --> src/client/mod.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub type Result<T> = std::result::Result<T, failure::Error>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Get`
[INFO] [stderr]   --> src/client/mod.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Get,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Head`
[INFO] [stderr]   --> src/client/mod.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Head,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Post`
[INFO] [stderr]   --> src/client/mod.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Post,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Put`
[INFO] [stderr]   --> src/client/mod.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Put,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Delete`
[INFO] [stderr]   --> src/client/mod.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     Delete,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Client`
[INFO] [stderr]   --> src/client/mod.rs:46:12
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub struct Client {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/client/mod.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn new(base_url: &str) -> Client {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_user_agent`
[INFO] [stderr]   --> src/client/mod.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn set_user_agent(&mut self, user_agent: &str) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `request`
[INFO] [stderr]   --> src/client/mod.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn request(&self, method: Method, endpoint: &str) -> Result<Request> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/client/mod.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub fn get(&self, endpoint: &str) -> Result<Response> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `post`
[INFO] [stderr]   --> src/client/mod.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     pub fn post<S: Serialize>(&self, endpoint: &str, body: &S) -> Result<Response> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `put`
[INFO] [stderr]   --> src/client/mod.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     pub fn put<S: Serialize>(&self, endpoint: &str, body: &S) -> Result<Response> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `delete`
[INFO] [stderr]   --> src/client/mod.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     pub fn delete(&self, endpoint: &str) -> Result<Response> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Request`
[INFO] [stderr]    --> src/client/mod.rs:104:12
[INFO] [stderr]     |
[INFO] [stderr] 104 | pub struct Request<'a> {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/client/mod.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 | /     pub fn new(
[INFO] [stderr] 113 | |         mut handle: RefMut<'a, curl::easy::Easy>,
[INFO] [stderr] 114 | |         method: Method,
[INFO] [stderr] 115 | |         url: &str,
[INFO] [stderr] ...   |
[INFO] [stderr] 134 | |         })
[INFO] [stderr] 135 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_header`
[INFO] [stderr]    --> src/client/mod.rs:138:5
[INFO] [stderr]     |
[INFO] [stderr] 138 |     pub fn with_header(mut self, key: &str, value: &str) -> Result<Request<'a>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_user_agent`
[INFO] [stderr]    --> src/client/mod.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     pub fn with_user_agent(mut self, ua: &str) -> Result<Request<'a>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_arguments`
[INFO] [stderr]    --> src/client/mod.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     pub fn with_arguments(mut self, args: &str) -> Result<Request<'a>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_json_body`
[INFO] [stderr]    --> src/client/mod.rs:156:5
[INFO] [stderr]     |
[INFO] [stderr] 156 |     pub fn with_json_body<S: Serialize>(mut self, body: &S) -> Result<Request<'a>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `send`
[INFO] [stderr]    --> src/client/mod.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 |     pub fn send(mut self) -> Result<Response> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `handle_request`
[INFO] [stderr]    --> src/client/mod.rs:186:4
[INFO] [stderr]     |
[INFO] [stderr] 186 | fn handle_request(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `status`
[INFO] [stderr]    --> src/client/mod.rs:230:5
[INFO] [stderr]     |
[INFO] [stderr] 230 |     pub fn status(&self) -> HttpStatus {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `failed`
[INFO] [stderr]    --> src/client/mod.rs:234:5
[INFO] [stderr]     |
[INFO] [stderr] 234 |     pub fn failed(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ok`
[INFO] [stderr]    --> src/client/mod.rs:238:5
[INFO] [stderr]     |
[INFO] [stderr] 238 |     pub fn ok(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_header`
[INFO] [stderr]    --> src/client/mod.rs:242:5
[INFO] [stderr]     |
[INFO] [stderr] 242 |     pub fn get_header(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_body`
[INFO] [stderr]    --> src/client/mod.rs:252:5
[INFO] [stderr]     |
[INFO] [stderr] 252 |     pub fn get_body(&self) -> Result<Vec<u8>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `deserialize`
[INFO] [stderr]    --> src/client/mod.rs:264:5
[INFO] [stderr]     |
[INFO] [stderr] 264 |     pub fn deserialize<T: DeserializeOwned>(&self) -> Result<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidJsonBody`
[INFO] [stderr]    --> src/client/mod.rs:281:5
[INFO] [stderr]     |
[INFO] [stderr] 281 |     InvalidJsonBody,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidJson`
[INFO] [stderr]    --> src/client/mod.rs:283:5
[INFO] [stderr]     |
[INFO] [stderr] 283 |     InvalidJson,
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `kind`
[INFO] [stderr]    --> src/client/mod.rs:293:5
[INFO] [stderr]     |
[INFO] [stderr] 293 |     pub fn kind(&self) -> ErrorKind {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `produce_map`
[INFO] [stderr]   --> src/main.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn produce_map() -> (Vec<i32>,Vec<i32>) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `content_to_cipher`
[INFO] [stderr]   --> src/main.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn content_to_cipher(input:&str,map:Vec<i32>) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cipher_to_content`
[INFO] [stderr]   --> src/main.rs:49:4
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn cipher_to_content(input:&str,map:Vec<i32>) -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/parse/mod.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         myclient.append_headers(temps);
[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/client/myclient.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         handle.get(true);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 56 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/net-8fa1cdeab437ad68
[INFO] [stdout] 
[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" "0eb514e058a5cf0a6954876edea1838ba905f975e8322f8580931661d53516be"`
[INFO] running `"docker" "rm" "-f" "0eb514e058a5cf0a6954876edea1838ba905f975e8322f8580931661d53516be"`
[INFO] [stdout] 0eb514e058a5cf0a6954876edea1838ba905f975e8322f8580931661d53516be