[INFO] fetching crate prover-utils 1.0.0...
[INFO] checking prover-utils-1.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate prover-utils 1.0.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate prover-utils 1.0.0
[INFO] finished tweaking crates.io crate prover-utils 1.0.0
[INFO] tweaked toml for crates.io crate prover-utils 1.0.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate prover-utils 1.0.0 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 prover-utils 1.0.0 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 8386e3e098210595c589ba390faa91a8d17fbeb15e0017f810801ec273b57fb6
[INFO] running `Command { std: "docker" "start" "-a" "8386e3e098210595c589ba390faa91a8d17fbeb15e0017f810801ec273b57fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8386e3e098210595c589ba390faa91a8d17fbeb15e0017f810801ec273b57fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8386e3e098210595c589ba390faa91a8d17fbeb15e0017f810801ec273b57fb6", kill_on_drop: false }`
[INFO] [stdout] 8386e3e098210595c589ba390faa91a8d17fbeb15e0017f810801ec273b57fb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 88570804ea910b37045f6b37f6274581e817850c97916edd26b4474c7ef4ae0c
[INFO] running `Command { std: "docker" "start" "-a" "88570804ea910b37045f6b37f6274581e817850c97916edd26b4474c7ef4ae0c", kill_on_drop: false }`
[INFO] [stderr]     Checking humantime v2.2.0
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling serde_with_macros v3.12.0
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking toml_datetime v0.6.9
[INFO] [stderr]     Checking serde_spanned v0.6.8
[INFO] [stderr]     Checking serde_with v3.12.0
[INFO] [stderr]     Checking humantime-serde v1.1.1
[INFO] [stderr]     Checking toml_edit v0.22.26
[INFO] [stderr]     Checking toml v0.8.22
[INFO] [stderr]     Checking prover-utils v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::time::Duration, Infallible>
[INFO] [stdout]  --> src/with/human_duration.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | serde_conv!(pub HumanDuration, Duration, HumanDurationImpl::new, HumanDurationImpl::get);
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]   = note: this error originates in the macro `serde_conv` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::time::Duration, Infallible>
[INFO] [stdout]   --> src/with/human_duration.rs:19:68
[INFO] [stdout]    |
[INFO] [stdout] 19 |       pub fn get(self) -> Result<Duration, std::convert::Infallible> {
[INFO] [stdout]    |  ____________________________________________________________________^
[INFO] [stdout] 20 | |         match self {
[INFO] [stdout] 21 | |             Self::Secs(secs) => Ok(Duration::from_secs(secs)),
[INFO] [stdout] 22 | |             Self::Human(duration) => Ok(duration),
[INFO] [stdout] 23 | |         }
[INFO] [stdout] 24 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::time::Duration, Infallible>
[INFO] [stdout]   --> src/with/human_duration.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | /         match self {
[INFO] [stdout] 21 | |             Self::Secs(secs) => Ok(Duration::from_secs(secs)),
[INFO] [stdout] 22 | |             Self::Human(duration) => Ok(duration),
[INFO] [stdout] 23 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::time::Duration, Infallible>
[INFO] [stdout]   --> src/with/human_duration.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 |             Self::Secs(secs) => Ok(Duration::from_secs(secs)),
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::time::Duration, Infallible>
[INFO] [stdout]   --> src/with/human_duration.rs:22:38
[INFO] [stdout]    |
[INFO] [stdout] 22 |             Self::Human(duration) => Ok(duration),
[INFO] [stdout]    |                                      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prover-utils` (lib) due to 5 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<std::time::Duration, Infallible>
[INFO] [stdout]  --> src/with/human_duration.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | serde_conv!(pub HumanDuration, Duration, HumanDurationImpl::new, HumanDurationImpl::get);
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]   = note: this error originates in the macro `serde_conv` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::time::Duration, Infallible>
[INFO] [stdout]   --> src/with/human_duration.rs:19:68
[INFO] [stdout]    |
[INFO] [stdout] 19 |       pub fn get(self) -> Result<Duration, std::convert::Infallible> {
[INFO] [stdout]    |  ____________________________________________________________________^
[INFO] [stdout] 20 | |         match self {
[INFO] [stdout] 21 | |             Self::Secs(secs) => Ok(Duration::from_secs(secs)),
[INFO] [stdout] 22 | |             Self::Human(duration) => Ok(duration),
[INFO] [stdout] 23 | |         }
[INFO] [stdout] 24 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::time::Duration, Infallible>
[INFO] [stdout]   --> src/with/human_duration.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | /         match self {
[INFO] [stdout] 21 | |             Self::Secs(secs) => Ok(Duration::from_secs(secs)),
[INFO] [stdout] 22 | |             Self::Human(duration) => Ok(duration),
[INFO] [stdout] 23 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::time::Duration, Infallible>
[INFO] [stdout]   --> src/with/human_duration.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 |             Self::Secs(secs) => Ok(Duration::from_secs(secs)),
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::time::Duration, Infallible>
[INFO] [stdout]   --> src/with/human_duration.rs:22:38
[INFO] [stdout]    |
[INFO] [stdout] 22 |             Self::Human(duration) => Ok(duration),
[INFO] [stdout]    |                                      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prover-utils` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "88570804ea910b37045f6b37f6274581e817850c97916edd26b4474c7ef4ae0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88570804ea910b37045f6b37f6274581e817850c97916edd26b4474c7ef4ae0c", kill_on_drop: false }`
[INFO] [stdout] 88570804ea910b37045f6b37f6274581e817850c97916edd26b4474c7ef4ae0c
