[INFO] crate natsclient 0.0.1 is already in cache
[INFO] extracting crate natsclient 0.0.1 into work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/reg/natsclient/0.0.1
[INFO] extracting crate natsclient 0.0.1 into work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/reg/natsclient/0.0.1
[INFO] validating manifest of natsclient-0.0.1 on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of natsclient-0.0.1 on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing natsclient-0.0.1
[INFO] finished frobbing natsclient-0.0.1
[INFO] frobbed toml for natsclient-0.0.1 written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/reg/natsclient/0.0.1/Cargo.toml
[INFO] started frobbing natsclient-0.0.1
[INFO] finished frobbing natsclient-0.0.1
[INFO] frobbed toml for natsclient-0.0.1 written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/reg/natsclient/0.0.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nats-types v0.1.7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking natsclient-0.0.1 against try#78b0bd8441ef961f6475e3d47fe3bca38cb83432 for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-4/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/reg/natsclient/0.0.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8b19ee04b00fbdd2d371f6f3991b109223ce5510276fe75163f2e6c090f65f9d
[INFO] running `"docker" "start" "-a" "8b19ee04b00fbdd2d371f6f3991b109223ce5510276fe75163f2e6c090f65f9d"`
[INFO] [stderr]    Compiling subtle v2.0.0
[INFO] [stderr]     Checking zeroize v0.6.0
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]     Checking nats-types v0.1.7
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]    Compiling curve25519-dalek v1.1.3
[INFO] [stderr]     Checking subtle-encoding v0.3.4
[INFO] [stderr]     Checking signatory v0.11.3
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.1
[INFO] [stderr]     Checking signatory-dalek v0.11.0
[INFO] [stderr]     Checking nkeys v0.0.4
[INFO] [stderr]     Checking natsclient v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::sync::mpsc::Sender`
[INFO] [stderr]  --> src/protocol.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::sync::mpsc::Sender;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `generate_connect_command`
[INFO] [stderr]  --> src/tcp.rs:2:23
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::protocol::{generate_connect_command, ProtocolHandler, ProtocolMessage};
[INFO] [stderr]   |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crossbeam::sync::WaitGroup`
[INFO] [stderr]  --> src/tcp.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crossbeam::sync::WaitGroup;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::Sender`
[INFO] [stderr]  --> src/protocol.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::sync::mpsc::Sender;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `generate_connect_command`
[INFO] [stderr]  --> src/tcp.rs:2:23
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::protocol::{generate_connect_command, ProtocolHandler, ProtocolMessage};
[INFO] [stderr]   |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crossbeam::sync::WaitGroup`
[INFO] [stderr]  --> src/tcp.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crossbeam::sync::WaitGroup;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `payload`
[INFO] [stderr]    --> src/lib.rs:114:9
[INFO] [stderr]     |
[INFO] [stderr] 114 |         payload: &[u8],
[INFO] [stderr]     |         ^^^^^^^ help: consider prefixing with an underscore: `_payload`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `timeout`
[INFO] [stderr]    --> src/lib.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         timeout: std::time::Duration,
[INFO] [stderr]     |         ^^^^^^^ help: consider prefixing with an underscore: `_timeout`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `server_info`
[INFO] [stderr]    --> src/protocol.rs:116:35
[INFO] [stderr]     |
[INFO] [stderr] 116 |             ProtocolMessage::Info(server_info) => {
[INFO] [stderr]     |                                   ^^^^^^^^^^^ help: consider prefixing with an underscore: `_server_info`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/protocol.rs:125:17
[INFO] [stderr]     |
[INFO] [stderr] 125 |                 self.delivery_sender.send(msg.clone());
[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/tcp.rs:58:21
[INFO] [stderr]    |
[INFO] [stderr] 58 |                     s.send(true);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `payload`
[INFO] [stderr]    --> src/lib.rs:114:9
[INFO] [stderr]     |
[INFO] [stderr] 114 |         payload: &[u8],
[INFO] [stderr]     |         ^^^^^^^ help: consider prefixing with an underscore: `_payload`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `timeout`
[INFO] [stderr]    --> src/lib.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         timeout: std::time::Duration,
[INFO] [stderr]     |         ^^^^^^^ help: consider prefixing with an underscore: `_timeout`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `server_info`
[INFO] [stderr]    --> src/protocol.rs:116:35
[INFO] [stderr]     |
[INFO] [stderr] 116 |             ProtocolMessage::Info(server_info) => {
[INFO] [stderr]     |                                   ^^^^^^^^^^^ help: consider prefixing with an underscore: `_server_info`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/protocol.rs:125:17
[INFO] [stderr]     |
[INFO] [stderr] 125 |                 self.delivery_sender.send(msg.clone());
[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/tcp.rs:58:21
[INFO] [stderr]    |
[INFO] [stderr] 58 |                     s.send(true);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.73s
[INFO] running `"docker" "inspect" "8b19ee04b00fbdd2d371f6f3991b109223ce5510276fe75163f2e6c090f65f9d"`
[INFO] running `"docker" "rm" "-f" "8b19ee04b00fbdd2d371f6f3991b109223ce5510276fe75163f2e6c090f65f9d"`
[INFO] [stdout] 8b19ee04b00fbdd2d371f6f3991b109223ce5510276fe75163f2e6c090f65f9d