[INFO] cloning repository https://github.com/devoidfury/rust-rserv
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/devoidfury/rust-rserv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdevoidfury%2Frust-rserv", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdevoidfury%2Frust-rserv'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 791b15e3648b426d2c1886ec4be40c42ede587f5
[INFO] checking devoidfury/rust-rserv against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdevoidfury%2Frust-rserv" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/devoidfury/rust-rserv on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/devoidfury/rust-rserv
[INFO] finished tweaking git repo https://github.com/devoidfury/rust-rserv
[INFO] tweaked toml for git repo https://github.com/devoidfury/rust-rserv written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/devoidfury/rust-rserv already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thread_local v0.2.6
[INFO] [stderr]   Downloaded num_cpus v0.2.13
[INFO] [stderr]   Downloaded libc v0.2.14
[INFO] [stderr]   Downloaded regex-syntax v0.3.4
[INFO] [stderr]   Downloaded regex v0.1.73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cbb887184ee1c394f819c2bfe58461776e25379e3731d589622b406a1085702
[INFO] running `Command { std: "docker" "start" "-a" "5cbb887184ee1c394f819c2bfe58461776e25379e3731d589622b406a1085702", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cbb887184ee1c394f819c2bfe58461776e25379e3731d589622b406a1085702", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cbb887184ee1c394f819c2bfe58461776e25379e3731d589622b406a1085702", kill_on_drop: false }`
[INFO] [stdout] 5cbb887184ee1c394f819c2bfe58461776e25379e3731d589622b406a1085702
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5c2f1d08711ff0593db502628304452d1959b07a6cb556622f5b34f21e4983e
[INFO] running `Command { std: "docker" "start" "-a" "b5c2f1d08711ff0593db502628304452d1959b07a6cb556622f5b34f21e4983e", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.14
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking regex-syntax v0.3.4
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking aho-corasick v0.5.2
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.6
[INFO] [stderr]     Checking regex v0.1.73
[INFO] [stderr]     Checking websrv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/response.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         try!(stream.write_all(format!("HTTP/1.0 {} {}\r\n", self.status, status_text).as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/response.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!(stream.write_all(headtxt.as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/response.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!(stream.write_all("\r\n".as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/response.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!(stream.write_all(self.body));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> src/server.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Shutdown`
[INFO] [stdout]  --> src/server.rs:4:40
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::net::{TcpListener, TcpStream, Shutdown};
[INFO] [stdout]   |                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num_cpus` is imported redundantly
[INFO] [stdout]  --> src/server.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use num_cpus;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate num_cpus;
[INFO] [stdout]   | ---------------------- the item `num_cpus` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sync_channel`
[INFO] [stdout]   --> src/server.rs:11:32
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::sync::mpsc::{channel, sync_channel, Sender};
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/response.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         try!(stream.write_all(format!("HTTP/1.0 {} {}\r\n", self.status, status_text).as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/response.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!(stream.write_all(headtxt.as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/response.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!(stream.write_all("\r\n".as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/response.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!(stream.write_all(self.body));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> src/server.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Shutdown`
[INFO] [stdout]  --> src/server.rs:4:40
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::net::{TcpListener, TcpStream, Shutdown};
[INFO] [stdout]   |                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num_cpus` is imported redundantly
[INFO] [stdout]  --> src/server.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use num_cpus;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate num_cpus;
[INFO] [stdout]   | ---------------------- the item `num_cpus` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sync_channel`
[INFO] [stdout]   --> src/server.rs:11:32
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::sync::mpsc::{channel, sync_channel, Sender};
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `body`, `headers`, `method`, and `protocol` are never read
[INFO] [stdout]   --> src/request.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct HTTPRequest {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 10 |     pub body: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 11 |     pub headers: HashMap<String, String>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 12 |     pub method: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 13 |     pub path: String,
[INFO] [stdout] 14 |     pub protocol: String
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sent_headers` is never read
[INFO] [stdout]   --> src/response.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub struct HTTPResponse<'a> {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 11 |     pub sent_headers: bool
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Next` and `Err` are never constructed
[INFO] [stdout]  --> src/middleware.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum MResult {
[INFO] [stdout]   |          ------- variants in this enum
[INFO] [stdout] 7 |     End,
[INFO] [stdout] 8 |     Next,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 9 |     Err
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `jobs` and `idx` are never read
[INFO] [stdout]   --> src/server.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Worker {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 14 |     jobs: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 15 |     tx: Sender<TcpStream>,
[INFO] [stdout] 16 |     idx: usize
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/server.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     done_tx.send(worker_idx);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     let _ = done_tx.send(worker_idx);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `body`, `headers`, `method`, and `protocol` are never read
[INFO] [stdout]   --> src/request.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct HTTPRequest {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 10 |     pub body: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 11 |     pub headers: HashMap<String, String>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 12 |     pub method: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 13 |     pub path: String,
[INFO] [stdout] 14 |     pub protocol: String
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sent_headers` is never read
[INFO] [stdout]   --> src/response.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub struct HTTPResponse<'a> {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 11 |     pub sent_headers: bool
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Next` and `Err` are never constructed
[INFO] [stdout]  --> src/middleware.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum MResult {
[INFO] [stdout]   |          ------- variants in this enum
[INFO] [stdout] 7 |     End,
[INFO] [stdout] 8 |     Next,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 9 |     Err
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `jobs` and `idx` are never read
[INFO] [stdout]   --> src/server.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Worker {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 14 |     jobs: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 15 |     tx: Sender<TcpStream>,
[INFO] [stdout] 16 |     idx: usize
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/server.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     done_tx.send(worker_idx);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     let _ = done_tx.send(worker_idx);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.78s
[INFO] running `Command { std: "docker" "inspect" "b5c2f1d08711ff0593db502628304452d1959b07a6cb556622f5b34f21e4983e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5c2f1d08711ff0593db502628304452d1959b07a6cb556622f5b34f21e4983e", kill_on_drop: false }`
[INFO] [stdout] b5c2f1d08711ff0593db502628304452d1959b07a6cb556622f5b34f21e4983e