[INFO] fetching crate libmonitor 0.1.2...
[INFO] checking libmonitor-0.1.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate libmonitor 0.1.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate libmonitor 0.1.2
[INFO] finished tweaking crates.io crate libmonitor 0.1.2
[INFO] tweaked toml for crates.io crate libmonitor 0.1.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate libmonitor 0.1.2 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 libmonitor 0.1.2 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 587e620e79df7355a3a9e406d1753c20032e60b1f7a3602e2550673ea316d973
[INFO] running `Command { std: "docker" "start" "-a" "587e620e79df7355a3a9e406d1753c20032e60b1f7a3602e2550673ea316d973", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "587e620e79df7355a3a9e406d1753c20032e60b1f7a3602e2550673ea316d973", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "587e620e79df7355a3a9e406d1753c20032e60b1f7a3602e2550673ea316d973", kill_on_drop: false }`
[INFO] [stdout] 587e620e79df7355a3a9e406d1753c20032e60b1f7a3602e2550673ea316d973
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 307fdac1098485c407d817ad9f6d07cabb29f7385b99ea776cc30c13c85be0b5
[INFO] running `Command { std: "docker" "start" "-a" "307fdac1098485c407d817ad9f6d07cabb29f7385b99ea776cc30c13c85be0b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling anyhow v1.0.83
[INFO] [stderr]    Compiling thiserror v1.0.60
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling syn v2.0.63
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking udev v0.8.0
[INFO] [stderr]     Checking i2cdev v0.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.60
[INFO] [stderr]     Checking libmonitor v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Protocol, Infallible>
[INFO] [stdout]   --> src/mccs/mod.rs:51:53
[INFO] [stdout]    |
[INFO] [stdout] 51 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 52 | |         Ok(s.into())
[INFO] [stdout] 53 | |     }
[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<Protocol, Infallible>
[INFO] [stdout]   --> src/mccs/mod.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         Ok(s.into())
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<DisplayTechnology, Infallible>
[INFO] [stdout]   --> src/mccs/mod.rs:97:53
[INFO] [stdout]    |
[INFO] [stdout] 97 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 98 | |         Ok(s.into())
[INFO] [stdout] 99 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<DisplayTechnology, Infallible>
[INFO] [stdout]   --> src/mccs/mod.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |         Ok(s.into())
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libmonitor` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Protocol, Infallible>
[INFO] [stdout]   --> src/mccs/mod.rs:51:53
[INFO] [stdout]    |
[INFO] [stdout] 51 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 52 | |         Ok(s.into())
[INFO] [stdout] 53 | |     }
[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<Protocol, Infallible>
[INFO] [stdout]   --> src/mccs/mod.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         Ok(s.into())
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<DisplayTechnology, Infallible>
[INFO] [stdout]   --> src/mccs/mod.rs:97:53
[INFO] [stdout]    |
[INFO] [stdout] 97 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 98 | |         Ok(s.into())
[INFO] [stdout] 99 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<DisplayTechnology, Infallible>
[INFO] [stdout]   --> src/mccs/mod.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |         Ok(s.into())
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libmonitor` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "307fdac1098485c407d817ad9f6d07cabb29f7385b99ea776cc30c13c85be0b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "307fdac1098485c407d817ad9f6d07cabb29f7385b99ea776cc30c13c85be0b5", kill_on_drop: false }`
[INFO] [stdout] 307fdac1098485c407d817ad9f6d07cabb29f7385b99ea776cc30c13c85be0b5
