[INFO] cloning repository https://github.com/connorwalsh/op
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/connorwalsh/op" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnorwalsh%2Fop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnorwalsh%2Fop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a02283cbd4bf7184422c0925175f912bc57c171
[INFO] checking connorwalsh/op against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnorwalsh%2Fop" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/connorwalsh/op on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/connorwalsh/op
[INFO] finished tweaking git repo https://github.com/connorwalsh/op
[INFO] tweaked toml for git repo https://github.com/connorwalsh/op written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/connorwalsh/op already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rosc v0.1.6
[INFO] running `Command { std: "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" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0866cee5aea205e472307cf8d8826fd3a96d19f04587aeab55ed6b0b137d7f2f
[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" "0866cee5aea205e472307cf8d8826fd3a96d19f04587aeab55ed6b0b137d7f2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0866cee5aea205e472307cf8d8826fd3a96d19f04587aeab55ed6b0b137d7f2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0866cee5aea205e472307cf8d8826fd3a96d19f04587aeab55ed6b0b137d7f2f", kill_on_drop: false }`
[INFO] [stdout] 0866cee5aea205e472307cf8d8826fd3a96d19f04587aeab55ed6b0b137d7f2f
[INFO] running `Command { std: "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" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93882edeab2e20e3bf77dc6b2ef0e786655ecbc1f02dce1c94e3addebe60a5d5
[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" "93882edeab2e20e3bf77dc6b2ef0e786655ecbc1f02dce1c94e3addebe60a5d5", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]     Checking futures v0.1.28
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking arrayvec v0.4.11
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_pcg v0.1.2
[INFO] [stderr]    Compiling semver v0.9.0
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[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
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[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rosc v0.1.6
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking tokio-io v0.1.12
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[INFO] [stderr]     Checking parking_lot v0.7.1
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[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking op v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0252]: the name `io` is defined multiple times
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tokio::io;
[INFO] [stdout]   |     --------- previous import of the module `io` here
[INFO] [stdout] ...
[INFO] [stdout] 9 | use std::io;
[INFO] [stdout]   |     ^^^^^^^ `io` reimported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `io` must be defined only once in the type namespace of this module
[INFO] [stdout] help: you can use `as` to change the binding name of the import
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io as other_io;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0252]: the name `io` is defined multiple times
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tokio::io;
[INFO] [stdout]   |     --------- previous import of the module `io` here
[INFO] [stdout] ...
[INFO] [stdout] 9 | use std::io;
[INFO] [stdout]   |     ^^^^^^^ `io` reimported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `io` must be defined only once in the type namespace of this module
[INFO] [stdout] help: you can use `as` to change the binding name of the import
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io as other_io;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stdout]   --> src/main.rs:83:20
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let (tx, rx) = mpsc::channel();
[INFO] [stdout]    |                    ^^^^ use of undeclared type or module `mpsc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `thread`
[INFO] [stdout]   --> src/main.rs:91:17
[INFO] [stdout]    |
[INFO] [stdout] 91 |                 thread::spawn(move || {
[INFO] [stdout]    |                 ^^^^^^ use of undeclared type or module `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::prelude::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'tokio::net::UdpSocket::send_to': use poll_send_to instead
[INFO] [stdout]   --> src/main.rs:34:34
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 let amt = socket.send_to(&buf[..size], &peer).await?;
[INFO] [stdout]    |                                  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `mpsc`
[INFO] [stdout]   --> src/main.rs:83:20
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let (tx, rx) = mpsc::channel();
[INFO] [stdout]    |                    ^^^^ use of undeclared type or module `mpsc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `thread`
[INFO] [stdout]   --> src/main.rs:91:17
[INFO] [stdout]    |
[INFO] [stdout] 91 |                 thread::spawn(move || {
[INFO] [stdout]    |                 ^^^^^^ use of undeclared type or module `thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::prelude::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `std::result::Result<usize, std::io::Error>` is not a future
[INFO] [stdout]   --> src/main.rs:34:27
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 let amt = socket.send_to(&buf[..size], &peer).await?;
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `std::result::Result<usize, std::io::Error>` is not a future
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::future::Future` is not implemented for `std::result::Result<usize, std::io::Error>`
[INFO] [stdout]    = note: required by `std::future::Future::poll`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'tokio::net::UdpSocket::send_to': use poll_send_to instead
[INFO] [stdout]   --> src/main.rs:34:34
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 let amt = socket.send_to(&buf[..size], &peer).await?;
[INFO] [stdout]    |                                  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'tokio::net::UdpSocket::recv_from': use poll_recv_from instead
[INFO] [stdout]   --> src/main.rs:49:18
[INFO] [stdout]    |
[INFO] [stdout] 49 |     match socket.recv_from(&mut buf) {
[INFO] [stdout]    |                  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'tokio::net::UdpSocket::send_to': use poll_send_to instead
[INFO] [stdout]   --> src/main.rs:56:26
[INFO] [stdout]    |
[INFO] [stdout] 56 |             match socket.send_to(&ack_msg, src) {
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:56:44
[INFO] [stdout]    |
[INFO] [stdout] 56 |             match socket.send_to(&ack_msg, src) {
[INFO] [stdout]    |                                            ^^^
[INFO] [stdout]    |                                            |
[INFO] [stdout]    |                                            expected `&std::net::SocketAddr`, found enum `std::net::SocketAddr`
[INFO] [stdout]    |                                            help: consider borrowing here: `&src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `std::result::Result<usize, std::io::Error>` is not a future
[INFO] [stdout]   --> src/main.rs:34:27
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 let amt = socket.send_to(&buf[..size], &peer).await?;
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `std::result::Result<usize, std::io::Error>` is not a future
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::future::Future` is not implemented for `std::result::Result<usize, std::io::Error>`
[INFO] [stdout]    = note: required by `std::future::Future::poll`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:73:34
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let socket = UdpSocket::bind("0.0.0.0:3333").expect("failed to bind to host socket!");
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^ expected enum `std::net::SocketAddr`, found `str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&std::net::SocketAddr`
[INFO] [stdout]               found reference `&'static str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'tokio::net::UdpSocket::recv_from': use poll_recv_from instead
[INFO] [stdout]   --> src/main.rs:49:18
[INFO] [stdout]    |
[INFO] [stdout] 49 |     match socket.recv_from(&mut buf) {
[INFO] [stdout]    |                  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'tokio::net::UdpSocket::recv_from': use poll_recv_from instead
[INFO] [stdout]   --> src/main.rs:89:22
[INFO] [stdout]    |
[INFO] [stdout] 89 |         match socket.recv_from(&mut buf) {
[INFO] [stdout]    |                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0252, E0277, E0308, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0252`.
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'tokio::net::UdpSocket::send_to': use poll_send_to instead
[INFO] [stdout]   --> src/main.rs:56:26
[INFO] [stdout]    |
[INFO] [stdout] 56 |             match socket.send_to(&ack_msg, src) {
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:56:44
[INFO] [stdout]    |
[INFO] [stdout] 56 |             match socket.send_to(&ack_msg, src) {
[INFO] [stdout]    |                                            ^^^
[INFO] [stdout]    |                                            |
[INFO] [stdout]    |                                            expected `&std::net::SocketAddr`, found enum `std::net::SocketAddr`
[INFO] [stdout]    |                                            help: consider borrowing here: `&src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `op`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:73:34
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let socket = UdpSocket::bind("0.0.0.0:3333").expect("failed to bind to host socket!");
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^ expected enum `std::net::SocketAddr`, found `str`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&std::net::SocketAddr`
[INFO] [stdout]               found reference `&'static str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'tokio::net::UdpSocket::recv_from': use poll_recv_from instead
[INFO] [stdout]   --> src/main.rs:89:22
[INFO] [stdout]    |
[INFO] [stdout] 89 |         match socket.recv_from(&mut buf) {
[INFO] [stdout]    |                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0252, E0277, E0308, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0252`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "93882edeab2e20e3bf77dc6b2ef0e786655ecbc1f02dce1c94e3addebe60a5d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93882edeab2e20e3bf77dc6b2ef0e786655ecbc1f02dce1c94e3addebe60a5d5", kill_on_drop: false }`
[INFO] [stdout] 93882edeab2e20e3bf77dc6b2ef0e786655ecbc1f02dce1c94e3addebe60a5d5
