[INFO] fetching crate sakaagari 0.2.0...
[INFO] checking sakaagari-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate sakaagari 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate sakaagari 0.2.0
[INFO] finished tweaking crates.io crate sakaagari 0.2.0
[INFO] tweaked toml for crates.io crate sakaagari 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sakaagari 0.2.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 53 packages to latest compatible versions
[INFO] [stderr]       Adding git2 v0.13.25 (available: v0.20.2)
[INFO] [stderr]       Adding toml v0.5.11 (available: v0.9.8)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 1852e83a6881a0578b84aed9689f08430c5f662336560ce58416cfbd150ec904
[INFO] running `Command { std: "docker" "start" "-a" "1852e83a6881a0578b84aed9689f08430c5f662336560ce58416cfbd150ec904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1852e83a6881a0578b84aed9689f08430c5f662336560ce58416cfbd150ec904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1852e83a6881a0578b84aed9689f08430c5f662336560ce58416cfbd150ec904", kill_on_drop: false }`
[INFO] [stdout] 1852e83a6881a0578b84aed9689f08430c5f662336560ce58416cfbd150ec904
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 792bdf3579de5bc20bccfce6883f4e03f08521f8d80d54be5fc884982e43da0c
[INFO] running `Command { std: "docker" "start" "-a" "792bdf3579de5bc20bccfce6883f4e03f08521f8d80d54be5fc884982e43da0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.2.45
[INFO] [stderr]     Checking icu_normalizer v2.1.1
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking url v2.5.7
[INFO] [stderr]    Compiling libz-sys v1.1.23
[INFO] [stderr]    Compiling libgit2-sys v0.12.26+1.3.0
[INFO] [stderr]     Checking git2 v0.13.25
[INFO] [stderr]     Checking sakaagari v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Cow<'_, [u8]>, Infallible>
[INFO] [stdout]   --> src/lib.rs:38:78
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn encode<'v>(_: &K, value: &'v [u8]) -> Result<Cow<'v, [u8]>, Infallible> {
[INFO] [stdout]    |  ______________________________________________________________________________^
[INFO] [stdout] 39 | |     Ok(Cow::Borrowed(value))
[INFO] [stdout] 40 | |   }
[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<Cow<'_, [u8]>, Infallible>
[INFO] [stdout]   --> src/lib.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     Ok(Cow::Borrowed(value))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/lib.rs:43:65
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn decode(_: &K, value: &[u8]) -> Result<Vec<u8>, Infallible> {
[INFO] [stdout]    |  _________________________________________________________________^
[INFO] [stdout] 44 | |     Ok(value.to_vec())
[INFO] [stdout] 45 | |   }
[INFO] [stdout]    | |___^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/lib.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     Ok(value.to_vec())
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Cow<'_, [u8]>, Infallible>
[INFO] [stdout]   --> src/lib.rs:38:78
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn encode<'v>(_: &K, value: &'v [u8]) -> Result<Cow<'v, [u8]>, Infallible> {
[INFO] [stdout]    |  ______________________________________________________________________________^
[INFO] [stdout] 39 | |     Ok(Cow::Borrowed(value))
[INFO] [stdout] 40 | |   }
[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<Cow<'_, [u8]>, Infallible>
[INFO] [stdout]   --> src/lib.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     Ok(Cow::Borrowed(value))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/lib.rs:43:65
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn decode(_: &K, value: &[u8]) -> Result<Vec<u8>, Infallible> {
[INFO] [stdout]    |  _________________________________________________________________^
[INFO] [stdout] 44 | |     Ok(value.to_vec())
[INFO] [stdout] 45 | |   }
[INFO] [stdout]    | |___^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/lib.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     Ok(value.to_vec())
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:67:14
[INFO] [stdout]    |
[INFO] [stdout] 67 |   fn to_path(&self) -> Cow<Path>;
[INFO] [stdout]    |              ^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |              |
[INFO] [stdout]    |              the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 67 |   fn to_path(&self) -> Cow<'_, Path>;
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:106:18
[INFO] [stdout]     |
[INFO] [stdout] 106 |   pub fn current(&self) -> Result<Version, Error> {
[INFO] [stdout]     |                  ^^^^^            ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 106 |   pub fn current(&self) -> Result<Version<'_>, Error> {
[INFO] [stdout]     |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:67:14
[INFO] [stdout]    |
[INFO] [stdout] 67 |   fn to_path(&self) -> Cow<Path>;
[INFO] [stdout]    |              ^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |              |
[INFO] [stdout]    |              the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 67 |   fn to_path(&self) -> Cow<'_, Path>;
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:106:18
[INFO] [stdout]     |
[INFO] [stdout] 106 |   pub fn current(&self) -> Result<Version, Error> {
[INFO] [stdout]     |                  ^^^^^            ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 106 |   pub fn current(&self) -> Result<Version<'_>, Error> {
[INFO] [stdout]     |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sakaagari` (lib) due to 4 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `sakaagari` (lib test) due to 4 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "792bdf3579de5bc20bccfce6883f4e03f08521f8d80d54be5fc884982e43da0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "792bdf3579de5bc20bccfce6883f4e03f08521f8d80d54be5fc884982e43da0c", kill_on_drop: false }`
[INFO] [stdout] 792bdf3579de5bc20bccfce6883f4e03f08521f8d80d54be5fc884982e43da0c
