[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 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 [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