[INFO] fetching crate stratum-server 2.0.0...
[INFO] checking stratum-server-2.0.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate stratum-server 2.0.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate stratum-server 2.0.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stratum-server 2.0.0
[INFO] finished tweaking crates.io crate stratum-server 2.0.0
[INFO] tweaked toml for crates.io crate stratum-server 2.0.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8433efde28f4b03a868a2b5429889ee22dadc63a6e405631feeef83e254079d7
[INFO] running `Command { std: "docker" "start" "-a" "8433efde28f4b03a868a2b5429889ee22dadc63a6e405631feeef83e254079d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8433efde28f4b03a868a2b5429889ee22dadc63a6e405631feeef83e254079d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8433efde28f4b03a868a2b5429889ee22dadc63a6e405631feeef83e254079d7", kill_on_drop: false }`
[INFO] [stdout] 8433efde28f4b03a868a2b5429889ee22dadc63a6e405631feeef83e254079d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a6ef5f84042213290f0baf72676d9945b7374c6f6397b379fc52c34ab4f3a87b
[INFO] running `Command { std: "docker" "start" "-a" "a6ef5f84042213290f0baf72676d9945b7374c6f6397b379fc52c34ab4f3a87b", kill_on_drop: false }`
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[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
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[INFO] [stderr]     Checking block-buffer v0.9.0
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[INFO] [stderr]     Checking sha2 v0.9.1
[INFO] [stderr]     Checking async-global-executor v1.3.0
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[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking portpicker v0.1.0
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling futures-macro v0.3.6
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking async-std v1.6.5
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[INFO] [stderr]     Checking futures-util v0.3.6
[INFO] [stderr]     Checking futures-executor v0.3.6
[INFO] [stderr]     Checking futures v0.3.6
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking serde_qs v0.7.0
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking femme v2.1.1
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]     Checking async-sse v4.0.1
[INFO] [stderr]     Checking async-h1 v2.1.2
[INFO] [stderr]     Checking tide v0.12.0
[INFO] [stderr]     Checking stratum-server v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `StratumResult`
[INFO] [stdout]  --> tests/basic_server_tcp_test.rs:7:50
[INFO] [stdout]   |
[INFO] [stdout] 7 | use stratum_server::{Connection, StratumRequest, StratumResult};
[INFO] [stdout]   |                                                  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `async_std::net::TcpStream`
[INFO] [stdout]  --> tests/basic_server_websocket_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use async_std::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `async_std::prelude::FutureExt`
[INFO] [stdout]  --> tests/basic_server_websocket_test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use async_std::prelude::FutureExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::io::AsyncWriteExt`
[INFO] [stdout]  --> tests/basic_server_websocket_test.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures::io::AsyncWriteExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::SinkExt`
[INFO] [stdout]  --> tests/basic_server_websocket_test.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::SinkExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> tests/basic_server_websocket_test.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stratum_server::StratumServer`
[INFO] [stdout]  --> tests/basic_server_websocket_test.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use stratum_server::StratumServer;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StratumResult`
[INFO] [stdout]   --> tests/basic_server_websocket_test.rs:10:50
[INFO] [stdout]    |
[INFO] [stdout] 10 | use stratum_server::{Connection, StratumRequest, StratumResult};
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_port`
[INFO] [stdout]  --> tests/common.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub async fn find_port() -> u16 {
[INFO] [stdout]   |              ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/basic_server_tcp_test.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         server.start().await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/basic_server_tcp_test.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         stream.write_all(msg.as_bytes()).await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/basic_server_tcp_test.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         stream.write_all(b"\n").await;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 05s
[INFO] running `Command { std: "docker" "inspect" "a6ef5f84042213290f0baf72676d9945b7374c6f6397b379fc52c34ab4f3a87b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6ef5f84042213290f0baf72676d9945b7374c6f6397b379fc52c34ab4f3a87b", kill_on_drop: false }`
[INFO] [stdout] a6ef5f84042213290f0baf72676d9945b7374c6f6397b379fc52c34ab4f3a87b