[INFO] fetching crate kiteconnect 0.2.9...
[INFO] testing kiteconnect-0.2.9 against 1.54.0 for beta-1.55-1
[INFO] extracting crate kiteconnect 0.2.9 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate kiteconnect 0.2.9 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kiteconnect 0.2.9
[INFO] finished tweaking crates.io crate kiteconnect 0.2.9
[INFO] tweaked toml for crates.io crate kiteconnect 0.2.9 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate kiteconnect 0.2.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "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] 4c12d173a77d674c98b2a1bedb07af5d59304591fa2fa7435c6ce338a6e765ee
[INFO] running `Command { std: "docker" "start" "-a" "4c12d173a77d674c98b2a1bedb07af5d59304591fa2fa7435c6ce338a6e765ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c12d173a77d674c98b2a1bedb07af5d59304591fa2fa7435c6ce338a6e765ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c12d173a77d674c98b2a1bedb07af5d59304591fa2fa7435c6ce338a6e765ee", kill_on_drop: false }`
[INFO] [stdout] 4c12d173a77d674c98b2a1bedb07af5d59304591fa2fa7435c6ce338a6e765ee
[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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d1db0984569fec532cf8df0a6769824b05efa8f882a32c9ffb09e2e884cc7e5
[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" "4d1db0984569fec532cf8df0a6769824b05efa8f882a32c9ffb09e2e884cc7e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling serde v1.0.112
[INFO] [stderr]    Compiling adler32 v1.1.0
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling publicsuffix v1.5.4
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling string v0.2.1
[INFO] [stderr]    Compiling tokio-buf v0.1.1
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling backtrace v0.3.49
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling cookie v0.12.0
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling http-body v0.1.0
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]    Compiling ws v0.7.9
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling hyper-tls v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.112
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling serde_urlencoded v0.5.5
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling cookie_store v0.7.0
[INFO] [stderr]    Compiling reqwest v0.9.24
[INFO] [stderr]    Compiling kiteconnect v0.2.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.19s
[INFO] running `Command { std: "docker" "inspect" "4d1db0984569fec532cf8df0a6769824b05efa8f882a32c9ffb09e2e884cc7e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d1db0984569fec532cf8df0a6769824b05efa8f882a32c9ffb09e2e884cc7e5", kill_on_drop: false }`
[INFO] [stdout] 4d1db0984569fec532cf8df0a6769824b05efa8f882a32c9ffb09e2e884cc7e5
[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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50d2a706112a7270d71679d59d27c15f13032dd46e7ff1d1c9c4fd80305b0c45
[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" "50d2a706112a7270d71679d59d27c15f13032dd46e7ff1d1c9c4fd80305b0c45", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling extend v0.1.2
[INFO] [stderr]    Compiling assert-json-diff v1.1.0
[INFO] [stderr]    Compiling mockito v0.27.0
[INFO] [stderr]    Compiling kiteconnect v0.2.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ws::Message`
[INFO] [stdout]  --> examples/ticker_sample.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ws::Message;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ws`
[INFO] [stdout]   --> examples/ticker_sample.rs:22:31
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn on_ticks<T>(&mut self, ws: &mut WebSocketHandler<T>, tick: Vec<json::Value>)
[INFO] [stdout]    |                               ^^ help: if this is intentional, prefix it with an underscore: `_ws`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ws`
[INFO] [stdout]   --> examples/ticker_sample.rs:28:31
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn on_close<T>(&mut self, ws: &mut WebSocketHandler<T>)
[INFO] [stdout]    |                               ^^ help: if this is intentional, prefix it with an underscore: `_ws`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ws`
[INFO] [stdout]   --> examples/ticker_sample.rs:33:31
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn on_error<T>(&mut self, ws: &mut WebSocketHandler<T>)
[INFO] [stdout]    |                               ^^ help: if this is intentional, prefix it with an underscore: `_ws`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/ticker_sample.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         ws.subscribe(vec![53511431]);
[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 `Result` that must be used
[INFO] [stdout]   --> examples/ticker_sample.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         ws.set_mode("full", vec![53511431]);
[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 `Result` that must be used
[INFO] [stdout]   --> examples/ticker_sample.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     ticker.connect(custom_handler, None);
[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: use of deprecated constant `mockito::SERVER_URL`: Call server_url() instead
[INFO] [stdout]   --> src/connect.rs:27:27
[INFO] [stdout]    |
[INFO] [stdout] 27 | const URL: &'static str = mockito::SERVER_URL;
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ticker.rs:421:9
[INFO] [stdout]     |
[INFO] [stdout] 421 |         kiteticker.connect(MyHandler{}, Some("127.0.0.1:3012"));
[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]    --> src/ticker.rs:422:9
[INFO] [stdout]     |
[INFO] [stdout] 422 |         kiteticker.sender.unwrap().send("PING");
[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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 16.36s
[INFO] running `Command { std: "docker" "inspect" "50d2a706112a7270d71679d59d27c15f13032dd46e7ff1d1c9c4fd80305b0c45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50d2a706112a7270d71679d59d27c15f13032dd46e7ff1d1c9c4fd80305b0c45", kill_on_drop: false }`
[INFO] [stdout] 50d2a706112a7270d71679d59d27c15f13032dd46e7ff1d1c9c4fd80305b0c45
[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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", 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] 67be136a22151a45ce6df991188a84d50583459f4764d1b98dae6c8f35867154
[INFO] running `Command { std: "docker" "start" "-a" "67be136a22151a45ce6df991188a84d50583459f4764d1b98dae6c8f35867154", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated constant `mockito::SERVER_URL`: Call server_url() instead
[INFO] [stderr]   --> src/connect.rs:27:27
[INFO] [stderr]    |
[INFO] [stderr] 27 | const URL: &'static str = mockito::SERVER_URL;
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ticker.rs:421:9
[INFO] [stderr]     |
[INFO] [stderr] 421 |         kiteticker.connect(MyHandler{}, Some("127.0.0.1:3012"));
[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/ticker.rs:422:9
[INFO] [stderr]     |
[INFO] [stderr] 422 |         kiteticker.sender.unwrap().send("PING");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ws::Message`
[INFO] [stderr]  --> examples/ticker_sample.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use ws::Message;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ws`
[INFO] [stderr]   --> examples/ticker_sample.rs:22:31
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn on_ticks<T>(&mut self, ws: &mut WebSocketHandler<T>, tick: Vec<json::Value>)
[INFO] [stderr]    |                               ^^ help: if this is intentional, prefix it with an underscore: `_ws`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ws`
[INFO] [stderr]   --> examples/ticker_sample.rs:28:31
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn on_close<T>(&mut self, ws: &mut WebSocketHandler<T>)
[INFO] [stderr]    |                               ^^ help: if this is intentional, prefix it with an underscore: `_ws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ws`
[INFO] [stderr]   --> examples/ticker_sample.rs:33:31
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn on_error<T>(&mut self, ws: &mut WebSocketHandler<T>)
[INFO] [stderr]    |                               ^^ help: if this is intentional, prefix it with an underscore: `_ws`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> examples/ticker_sample.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         ws.subscribe(vec![53511431]);
[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 `Result` that must be used
[INFO] [stderr]   --> examples/ticker_sample.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         ws.set_mode("full", vec![53511431]);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> examples/ticker_sample.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     ticker.connect(custom_handler, None);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/kiteconnect-dddaecc16e526e1a)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test connect::tests::test_login_url ... ok
[INFO] [stdout] test connect::tests::test_build_url ... ok
[INFO] [stdout] test connect::tests::test_set_access_token ... ok
[INFO] [stdout] test connect::tests::test_session_expiry_hook ... ok
[INFO] [stdout] test ticker::tests::test_kite_ticker ... ok
[INFO] [stdout] test connect::tests::test_holdings ... ok
[INFO] [stdout] test connect::tests::test_instruments ... ok
[INFO] [stdout] test connect::tests::test_positions ... ok
[INFO] [stdout] test connect::tests::test_margins ... ok
[INFO] [stdout] test connect::tests::test_order_history ... ok
[INFO] [stdout] test connect::tests::test_mf_instruments ... ok
[INFO] [stdout] test connect::tests::test_order_trades ... ok
[INFO] [stdout] test connect::tests::test_mf_orders ... ok
[INFO] [stdout] test connect::tests::test_trigger_range ... ok
[INFO] [stdout] test connect::tests::test_orders ... ok
[INFO] [stdout] test connect::tests::test_trades ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.14s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests kiteconnect
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 26) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 50) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.61s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "67be136a22151a45ce6df991188a84d50583459f4764d1b98dae6c8f35867154", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67be136a22151a45ce6df991188a84d50583459f4764d1b98dae6c8f35867154", kill_on_drop: false }`
[INFO] [stdout] 67be136a22151a45ce6df991188a84d50583459f4764d1b98dae6c8f35867154
