[INFO] cloning repository https://github.com/owenholloway/janus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/owenholloway/janus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fowenholloway%2Fjanus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fowenholloway%2Fjanus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d242a57d716c0af0d2792448e9a7e222c2f26525
[INFO] checking owenholloway/janus against master#4d1bd0db7f489b22c6d8aa2385937a95412c015b for pr-114682
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fowenholloway%2Fjanus" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/owenholloway/janus on toolchain 4d1bd0db7f489b22c6d8aa2385937a95412c015b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/owenholloway/janus
[INFO] finished tweaking git repo https://github.com/owenholloway/janus
[INFO] tweaked toml for git repo https://github.com/owenholloway/janus written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/owenholloway/janus already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c1501661bbf5159dc7c268cab28158b04079e4efcd5ed98e5e6349e4131aa0c
[INFO] running `Command { std: "docker" "start" "-a" "3c1501661bbf5159dc7c268cab28158b04079e4efcd5ed98e5e6349e4131aa0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c1501661bbf5159dc7c268cab28158b04079e4efcd5ed98e5e6349e4131aa0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c1501661bbf5159dc7c268cab28158b04079e4efcd5ed98e5e6349e4131aa0c", kill_on_drop: false }`
[INFO] [stdout] 3c1501661bbf5159dc7c268cab28158b04079e4efcd5ed98e5e6349e4131aa0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 826d7dbcb48c68b97088d69c242e45a81b703c0a02c3ea9957427862c99bf571
[INFO] running `Command { std: "docker" "start" "-a" "826d7dbcb48c68b97088d69c242e45a81b703c0a02c3ea9957427862c99bf571", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `trace`
[INFO] [stdout]  --> src/protocols/modbus/transport/tcp_frame.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use log::{error, trace};
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc::Sender`
[INFO] [stdout]  --> src/protocols/modbus/transport/tcp_frame.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tokio::sync::mpsc::Sender;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CoilValue`, `Coil`
[INFO] [stdout]  --> src/protocols/modbus/transport/tcp_frame.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::protocols::modbus::data::coil::{Coil, CoilValue};
[INFO] [stdout]   |                                            ^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::protocols::modbus::data::BooleanValueOperations`
[INFO] [stdout]   --> src/protocols/modbus/transport/tcp_frame.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::protocols::modbus::data::BooleanValueOperations;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `trace`
[INFO] [stdout]  --> src/protocols/modbus/transport/tcp_frame.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use log::{error, trace};
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc::Sender`
[INFO] [stdout]  --> src/protocols/modbus/transport/tcp_frame.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tokio::sync::mpsc::Sender;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CoilValue`, `Coil`
[INFO] [stdout]  --> src/protocols/modbus/transport/tcp_frame.rs:9:44
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::protocols::modbus::data::coil::{Coil, CoilValue};
[INFO] [stdout]   |                                            ^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::protocols::modbus::data::BooleanValueOperations`
[INFO] [stdout]   --> src/protocols/modbus/transport/tcp_frame.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::protocols::modbus::data::BooleanValueOperations;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unit`
[INFO] [stdout]    --> src/protocols/modbus/transport/tcp_frame.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     unit: &Unit,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_unit`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `update_tx`
[INFO] [stdout]    --> src/protocols/modbus/transport/tcp_frame.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |     let update_tx = tx_mpsc.clone();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_update_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `unit`
[INFO] [stdout]    --> src/protocols/modbus/transport/tcp_frame.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     unit: &Unit,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_unit`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `update_tx`
[INFO] [stdout]    --> src/protocols/modbus/transport/tcp_frame.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |     let update_tx = tx_mpsc.clone();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_update_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TcpTransport`, `unit::Unit`
[INFO] [stdout]   --> src/bin/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         unit::Unit,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     transport::{bind_tcp, TcpTransport},
[INFO] [stdout]    |                           ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TcpTransport`, `unit::Unit`
[INFO] [stdout]   --> src/bin/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         unit::Unit,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     transport::{bind_tcp, TcpTransport},
[INFO] [stdout]    |                           ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 | /             tx_mpsc.send(janus::supporting::units_db::UpdatedObject::Coil {
[INFO] [stdout] 143 | |                 value: Coil::EnabledReadOnly {
[INFO] [stdout] 144 | |                     coil_value: CoilValue(!coil),
[INFO] [stdout] 145 | |                 },
[INFO] [stdout] 146 | |                 no: 100,
[INFO] [stdout] 147 | |             }).await;
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 142 |             let _ = tx_mpsc.send(janus::supporting::units_db::UpdatedObject::Coil {
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 | /             tx_mpsc.send(janus::supporting::units_db::UpdatedObject::Coil {
[INFO] [stdout] 152 | |                 value: Coil::EnabledReadOnly {
[INFO] [stdout] 153 | |                     coil_value: CoilValue(!coil),
[INFO] [stdout] 154 | |                 },
[INFO] [stdout] 155 | |                 no: 101,
[INFO] [stdout] 156 | |             }).await;
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 151 |             let _ = tx_mpsc.send(janus::supporting::units_db::UpdatedObject::Coil {
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 | /             tx_mpsc.send(janus::supporting::units_db::UpdatedObject::Coil {
[INFO] [stdout] 161 | |                 value: Coil::EnabledReadOnly {
[INFO] [stdout] 162 | |                     coil_value: CoilValue(!coil),
[INFO] [stdout] 163 | |                 },
[INFO] [stdout] 164 | |                 no: 102,
[INFO] [stdout] 165 | |             }).await;
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 160 |             let _ = tx_mpsc.send(janus::supporting::units_db::UpdatedObject::Coil {
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 | /             tx_mpsc.send(janus::supporting::units_db::UpdatedObject::Coil {
[INFO] [stdout] 143 | |                 value: Coil::EnabledReadOnly {
[INFO] [stdout] 144 | |                     coil_value: CoilValue(!coil),
[INFO] [stdout] 145 | |                 },
[INFO] [stdout] 146 | |                 no: 100,
[INFO] [stdout] 147 | |             }).await;
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 142 |             let _ = tx_mpsc.send(janus::supporting::units_db::UpdatedObject::Coil {
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 | /             tx_mpsc.send(janus::supporting::units_db::UpdatedObject::Coil {
[INFO] [stdout] 152 | |                 value: Coil::EnabledReadOnly {
[INFO] [stdout] 153 | |                     coil_value: CoilValue(!coil),
[INFO] [stdout] 154 | |                 },
[INFO] [stdout] 155 | |                 no: 101,
[INFO] [stdout] 156 | |             }).await;
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 151 |             let _ = tx_mpsc.send(janus::supporting::units_db::UpdatedObject::Coil {
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/main.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 | /             tx_mpsc.send(janus::supporting::units_db::UpdatedObject::Coil {
[INFO] [stdout] 161 | |                 value: Coil::EnabledReadOnly {
[INFO] [stdout] 162 | |                     coil_value: CoilValue(!coil),
[INFO] [stdout] 163 | |                 },
[INFO] [stdout] 164 | |                 no: 102,
[INFO] [stdout] 165 | |             }).await;
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 160 |             let _ = tx_mpsc.send(janus::supporting::units_db::UpdatedObject::Coil {
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.26s
[INFO] running `Command { std: "docker" "inspect" "826d7dbcb48c68b97088d69c242e45a81b703c0a02c3ea9957427862c99bf571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "826d7dbcb48c68b97088d69c242e45a81b703c0a02c3ea9957427862c99bf571", kill_on_drop: false }`
[INFO] [stdout] 826d7dbcb48c68b97088d69c242e45a81b703c0a02c3ea9957427862c99bf571
