[INFO] fetching crate yams 0.10.0...
[INFO] checking yams-0.10.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate yams 0.10.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate yams 0.10.0
[INFO] finished tweaking crates.io crate yams 0.10.0
[INFO] tweaked toml for crates.io crate yams 0.10.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate yams 0.10.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate yams 0.10.0 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 11de4549bfc123dea9b7f83680af00e67ec35ecb96f5d918f9f42e0cbfd3f6a7
[INFO] running `Command { std: "docker" "start" "-a" "11de4549bfc123dea9b7f83680af00e67ec35ecb96f5d918f9f42e0cbfd3f6a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11de4549bfc123dea9b7f83680af00e67ec35ecb96f5d918f9f42e0cbfd3f6a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11de4549bfc123dea9b7f83680af00e67ec35ecb96f5d918f9f42e0cbfd3f6a7", kill_on_drop: false }`
[INFO] [stdout] 11de4549bfc123dea9b7f83680af00e67ec35ecb96f5d918f9f42e0cbfd3f6a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81b3a419bdd6fce902ac29bbdfb494afe0ea19ddb4927c35a4d34a8c6d48bb0c
[INFO] running `Command { std: "docker" "start" "-a" "81b3a419bdd6fce902ac29bbdfb494afe0ea19ddb4927c35a4d34a8c6d48bb0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling libc v0.2.113
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling serde_derive v1.0.135
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]    Compiling serde v1.0.135
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking nix v0.22.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.4.3
[INFO] [stderr]     Checking parse_int v0.6.0
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling futures-macro v0.3.19
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling clap_derive v3.0.12
[INFO] [stderr]     Checking serialport v4.0.1
[INFO] [stderr]     Checking mio-serial v5.0.1
[INFO] [stderr]     Checking tokio v1.15.0
[INFO] [stderr]     Checking clap v3.0.12
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking futures-executor v0.3.19
[INFO] [stderr]     Checking futures v0.3.19
[INFO] [stderr]     Checking tokio-serial v5.4.1
[INFO] [stderr]     Checking tokio-modbus v0.5.2
[INFO] [stderr]     Checking serde_yaml v0.8.23
[INFO] [stderr]     Checking yams v0.10.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `register_data` is never read
[INFO] [stdout]    --> src/config.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 160 | pub struct ModbusClientConfig {
[INFO] [stdout]     |            ------------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |     pub register_data: Option<ModbusRegisterDatabase>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ModbusClientConfig` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/config.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     /// Sets the configuration file to load
[INFO] [stdout] 12 | |     #[clap(short, long, required_unless_present_all(&["device-type"]))]
[INFO] [stdout] 13 | |     config_file: Option<String>,
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/config.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     /// the serial port when using Modbus RTU
[INFO] [stdout] 32 | |     #[clap(short('s'), long, required_if_eq("protocol-type", "rtu"))]
[INFO] [stdout] 33 | |     pub serial_port: Option<String>,
[INFO] [stdout]    | |___________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/config.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | /     /// the new values to set in one-shot mode
[INFO] [stdout] 75 | |     #[clap(short('n'), long, required_if_eq_any(&[("function-code", "write-single-register"),
[INFO] [stdout] 76 | |                                                   ("function-code", "write-multiple-registers"),
[INFO] [stdout] 77 | |                                                   ("function-code", "write-single-coil"),
[INFO] [stdout] 78 | |                                                   ("function-code", "write-multiple-coils")]))]
[INFO] [stdout] 79 | |     pub new_values: Option<Vec<String>>,
[INFO] [stdout]    | |_______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/util.rs:49:14
[INFO] [stdout]    |
[INFO] [stdout] 49 |     unsafe { transmute(data) }
[INFO] [stdout]    |              ---------^^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: replace this with: `f32::from_bits`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/util.rs:57:14
[INFO] [stdout]    |
[INFO] [stdout] 57 |     unsafe { transmute(data) }
[INFO] [stdout]    |              ---------^^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: replace this with: `f64::from_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/util.rs:69:30
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let data: u32 = unsafe { transmute(src) };
[INFO] [stdout]    |                              ---------^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: replace this with: `f32::to_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/util.rs:85:30
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let data: u64 = unsafe { transmute(src) };
[INFO] [stdout]    |                              ---------^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: replace this with: `f64::to_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `register_data` is never read
[INFO] [stdout]    --> src/config.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 160 | pub struct ModbusClientConfig {
[INFO] [stdout]     |            ------------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |     pub register_data: Option<ModbusRegisterDatabase>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ModbusClientConfig` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/config.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     /// Sets the configuration file to load
[INFO] [stdout] 12 | |     #[clap(short, long, required_unless_present_all(&["device-type"]))]
[INFO] [stdout] 13 | |     config_file: Option<String>,
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/config.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     /// the serial port when using Modbus RTU
[INFO] [stdout] 32 | |     #[clap(short('s'), long, required_if_eq("protocol-type", "rtu"))]
[INFO] [stdout] 33 | |     pub serial_port: Option<String>,
[INFO] [stdout]    | |___________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/config.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | /     /// the new values to set in one-shot mode
[INFO] [stdout] 75 | |     #[clap(short('n'), long, required_if_eq_any(&[("function-code", "write-single-register"),
[INFO] [stdout] 76 | |                                                   ("function-code", "write-multiple-registers"),
[INFO] [stdout] 77 | |                                                   ("function-code", "write-single-coil"),
[INFO] [stdout] 78 | |                                                   ("function-code", "write-multiple-coils")]))]
[INFO] [stdout] 79 | |     pub new_values: Option<Vec<String>>,
[INFO] [stdout]    | |_______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yams` (bin "yams" test) due to 3 previous errors; 5 warnings emitted
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/util.rs:49:14
[INFO] [stdout]    |
[INFO] [stdout] 49 |     unsafe { transmute(data) }
[INFO] [stdout]    |              ---------^^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: replace this with: `f32::from_bits`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/util.rs:57:14
[INFO] [stdout]    |
[INFO] [stdout] 57 |     unsafe { transmute(data) }
[INFO] [stdout]    |              ---------^^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: replace this with: `f64::from_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/util.rs:69:30
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let data: u32 = unsafe { transmute(src) };
[INFO] [stdout]    |                              ---------^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: replace this with: `f32::to_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/util.rs:85:30
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let data: u64 = unsafe { transmute(src) };
[INFO] [stdout]    |                              ---------^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: replace this with: `f64::to_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yams` (bin "yams") due to 3 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "81b3a419bdd6fce902ac29bbdfb494afe0ea19ddb4927c35a4d34a8c6d48bb0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81b3a419bdd6fce902ac29bbdfb494afe0ea19ddb4927c35a4d34a8c6d48bb0c", kill_on_drop: false }`
[INFO] [stdout] 81b3a419bdd6fce902ac29bbdfb494afe0ea19ddb4927c35a4d34a8c6d48bb0c
