[INFO] fetching crate miau 0.1.1...
[INFO] checking miau-0.1.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate miau 0.1.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate miau 0.1.1
[INFO] finished tweaking crates.io crate miau 0.1.1
[INFO] tweaked toml for crates.io crate miau 0.1.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate miau 0.1.1 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 miau 0.1.1 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] 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] a0b15277e1edc705e11ac9949231363853946c85c4f7edae8c9353e7efe1d3aa
[INFO] running `Command { std: "docker" "start" "-a" "a0b15277e1edc705e11ac9949231363853946c85c4f7edae8c9353e7efe1d3aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0b15277e1edc705e11ac9949231363853946c85c4f7edae8c9353e7efe1d3aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0b15277e1edc705e11ac9949231363853946c85c4f7edae8c9353e7efe1d3aa", kill_on_drop: false }`
[INFO] [stdout] a0b15277e1edc705e11ac9949231363853946c85c4f7edae8c9353e7efe1d3aa
[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] 8a486498fa60a25dd907ef59d32b6e7b5251f683db75a2c5a05fbd6c6b70c76e
[INFO] running `Command { std: "docker" "start" "-a" "8a486498fa60a25dd907ef59d32b6e7b5251f683db75a2c5a05fbd6c6b70c76e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking futures-core v0.3.12
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking futures-sink v0.3.12
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]     Checking futures-io v0.3.12
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling rstest v0.6.4
[INFO] [stderr]    Compiling tokio v0.3.7
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling serde_json v1.0.62
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]     Checking futures-channel v0.3.12
[INFO] [stderr]     Checking futures-task v0.3.12
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking rmp v0.8.10
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling futures-macro v0.3.12
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling tokio-macros v0.3.2
[INFO] [stderr]     Checking futures-util v0.3.12
[INFO] [stderr]     Checking futures-executor v0.3.12
[INFO] [stderr]     Checking futures v0.3.12
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking rmp-serde v0.15.4
[INFO] [stderr]     Checking miau v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `experimental_serde_ron`
[INFO] [stdout]   --> src/format/mod.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[cfg(feature = "experimental_serde_ron")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `all`, `ini`, `json`, `json5`, `msgpack`, `rmp-serde`, `serde_ini`, `serde_json`, `serde_json5`, `serde_toml`, `serde_yaml`, `toml`, and `yaml`
[INFO] [stdout]    = help: consider adding `experimental_serde_ron` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]   --> src/configuration/value.rs:60:52
[INFO] [stdout]    |
[INFO] [stdout] 60 |                         Value::SignedInteger(v) => (*v).try_into()
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 | try_from_for_int!(i8, i16, i32, i64, isize);
[INFO] [stdout]    | ------------------------------------------- in this macro invocation
[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 `try_from_for_int` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/error.rs:139:27
[INFO] [stdout]     |
[INFO] [stdout] 139 |     pub fn pretty_display(&self) -> PrettyConfigurationDisplay {
[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] 139 |     pub fn pretty_display(&self) -> PrettyConfigurationDisplay<'_> {
[INFO] [stdout]     |                                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `miau` (lib) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8a486498fa60a25dd907ef59d32b6e7b5251f683db75a2c5a05fbd6c6b70c76e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a486498fa60a25dd907ef59d32b6e7b5251f683db75a2c5a05fbd6c6b70c76e", kill_on_drop: false }`
[INFO] [stdout] 8a486498fa60a25dd907ef59d32b6e7b5251f683db75a2c5a05fbd6c6b70c76e
