[INFO] updating cached repository https://github.com/semrov/Chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac79789905fc5748da7636f6a645a1d5a89f14bd
[INFO] testing semrov/Chat against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsemrov%2FChat" "/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/semrov/Chat on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/semrov/Chat
[INFO] finished tweaking git repo https://github.com/semrov/Chat
[INFO] tweaked toml for git repo https://github.com/semrov/Chat written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/semrov/Chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c52a5fad268c179c972370e029e12ec104fda2d555115cf56d00420161800b5
[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" "2c52a5fad268c179c972370e029e12ec104fda2d555115cf56d00420161800b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c52a5fad268c179c972370e029e12ec104fda2d555115cf56d00420161800b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c52a5fad268c179c972370e029e12ec104fda2d555115cf56d00420161800b5", kill_on_drop: false }`
[INFO] [stdout] 2c52a5fad268c179c972370e029e12ec104fda2d555115cf56d00420161800b5
[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" "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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8616d8e0577e242509ba428c35ebe0e247ecb7ef516bdfed0c3b6e0a830c4efd
[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" "8616d8e0577e242509ba428c35ebe0e247ecb7ef516bdfed0c3b6e0a830c4efd", kill_on_drop: false }`
[INFO] [stderr]    Compiling iovec v0.1.0
[INFO] [stderr]    Compiling net2 v0.2.27
[INFO] [stderr]    Compiling http-muncher v0.3.1
[INFO] [stderr]    Compiling sha1 v0.1.1
[INFO] [stderr]    Compiling mio v0.6.5
[INFO] [stderr]    Compiling chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]  --> src/server.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mio::tcp::{TcpListener,TcpStream};
[INFO] [stdout]   |                            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Events`, `PollOpt`, `Poll`, `Ready`
[INFO] [stdout]  --> src/server.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use mio::{Ready, Poll, PollOpt, Token,Events};
[INFO] [stdout]   |           ^^^^^  ^^^^  ^^^^^^^        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ParserHandler`
[INFO] [stdout]  --> src/client.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | use http_muncher::{Parser,ParserHandler};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]   --> src/main.rs:13:28
[INFO] [stdout]    |
[INFO] [stdout] 13 | use mio::tcp::{TcpListener,TcpStream};
[INFO] [stdout]    |                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/http_parser.rs:28:35
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn on_header_field(&mut self, parser : &mut Parser, header : &[u8]) -> bool 
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/http_parser.rs:34:35
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn on_header_value(&mut self, parser: &mut Parser, value: &[u8]) -> bool 
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/http_parser.rs:43:39
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn on_headers_complete(&mut self, parser : &mut Parser) -> bool 
[INFO] [stdout]    |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:76:29
[INFO] [stdout]    |
[INFO] [stdout] 76 |                         let mut client = web_socket_server.get_client_mut_ref(&token).unwrap();
[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/main.rs:88:29
[INFO] [stdout]    |
[INFO] [stdout] 88 |                         let mut client = web_socket_server.get_client_mut_ref(&token).unwrap();
[INFO] [stdout]    |                             ----^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.51s
[INFO] running `Command { std: "docker" "inspect" "8616d8e0577e242509ba428c35ebe0e247ecb7ef516bdfed0c3b6e0a830c4efd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8616d8e0577e242509ba428c35ebe0e247ecb7ef516bdfed0c3b6e0a830c4efd", kill_on_drop: false }`
[INFO] [stdout] 8616d8e0577e242509ba428c35ebe0e247ecb7ef516bdfed0c3b6e0a830c4efd
[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" "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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bf14158d911449cbff134611eb25242e4f1f671ee21d2543b7945673125682a
[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" "8bf14158d911449cbff134611eb25242e4f1f671ee21d2543b7945673125682a", kill_on_drop: false }`
[INFO] [stderr]    Compiling chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]  --> src/server.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mio::tcp::{TcpListener,TcpStream};
[INFO] [stdout]   |                            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Events`, `PollOpt`, `Poll`, `Ready`
[INFO] [stdout]  --> src/server.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use mio::{Ready, Poll, PollOpt, Token,Events};
[INFO] [stdout]   |           ^^^^^  ^^^^  ^^^^^^^        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ParserHandler`
[INFO] [stdout]  --> src/client.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | use http_muncher::{Parser,ParserHandler};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]   --> src/main.rs:13:28
[INFO] [stdout]    |
[INFO] [stdout] 13 | use mio::tcp::{TcpListener,TcpStream};
[INFO] [stdout]    |                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/http_parser.rs:28:35
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn on_header_field(&mut self, parser : &mut Parser, header : &[u8]) -> bool 
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/http_parser.rs:34:35
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn on_header_value(&mut self, parser: &mut Parser, value: &[u8]) -> bool 
[INFO] [stdout]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/http_parser.rs:43:39
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn on_headers_complete(&mut self, parser : &mut Parser) -> bool 
[INFO] [stdout]    |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:76:29
[INFO] [stdout]    |
[INFO] [stdout] 76 |                         let mut client = web_socket_server.get_client_mut_ref(&token).unwrap();
[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/main.rs:88:29
[INFO] [stdout]    |
[INFO] [stdout] 88 |                         let mut client = web_socket_server.get_client_mut_ref(&token).unwrap();
[INFO] [stdout]    |                             ----^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "8bf14158d911449cbff134611eb25242e4f1f671ee21d2543b7945673125682a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bf14158d911449cbff134611eb25242e4f1f671ee21d2543b7945673125682a", kill_on_drop: false }`
[INFO] [stdout] 8bf14158d911449cbff134611eb25242e4f1f671ee21d2543b7945673125682a
[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" "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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 757292c08f054b46326363b4b71550427d7e0dc461e8ad6b55c5b8e17b7a2a70
[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" "757292c08f054b46326363b4b71550427d7e0dc461e8ad6b55c5b8e17b7a2a70", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `TcpStream`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/server.rs:3:28
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 3 | use mio::tcp::{TcpListener,TcpStream};
[INFO] [stdout] 
[INFO] [stderr]   |                            ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Events`, `PollOpt`, `Poll`, `Ready`
[INFO] [stderr]  --> src/server.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | use mio::{Ready, Poll, PollOpt, Token,Events};
[INFO] [stderr]   |           ^^^^^  ^^^^  ^^^^^^^        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ParserHandler`
[INFO] [stderr]  --> src/client.rs:1:27
[INFO] [stderr]   |
[INFO] [stderr] 1 | use http_muncher::{Parser,ParserHandler};
[INFO] [stderr]   |                           ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TcpStream`
[INFO] [stderr]   --> src/main.rs:13:28
[INFO] [stderr]    |
[INFO] [stderr] 13 | use mio::tcp::{TcpListener,TcpStream};
[INFO] [stderr]    |                            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/http_parser.rs:28:35
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn on_header_field(&mut self, parser : &mut Parser, header : &[u8]) -> bool 
[INFO] [stderr]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/http_parser.rs:34:35
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn on_header_value(&mut self, parser: &mut Parser, value: &[u8]) -> bool 
[INFO] [stderr]    |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/http_parser.rs:43:39
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn on_headers_complete(&mut self, parser : &mut Parser) -> bool 
[INFO] [stderr]    |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:76:29
[INFO] [stderr]    |
[INFO] [stderr] 76 |                         let mut client = web_socket_server.get_client_mut_ref(&token).unwrap();
[INFO] [stderr]    |                             ----^^^^^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:88:29
[INFO] [stderr]    |
[INFO] [stderr] 88 |                         let mut client = web_socket_server.get_client_mut_ref(&token).unwrap();
[INFO] [stderr]    |                             ----^^^^^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chat-b6dd9d25a3fd7310
[INFO] running `Command { std: "docker" "inspect" "757292c08f054b46326363b4b71550427d7e0dc461e8ad6b55c5b8e17b7a2a70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "757292c08f054b46326363b4b71550427d7e0dc461e8ad6b55c5b8e17b7a2a70", kill_on_drop: false }`
[INFO] [stdout] 757292c08f054b46326363b4b71550427d7e0dc461e8ad6b55c5b8e17b7a2a70