[INFO] fetching crate nyoom-json 0.3.0... [INFO] checking nyoom-json-0.3.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1 [INFO] extracting crate nyoom-json 0.3.0 into /workspace/builds/worker-3-tc1/source [INFO] started tweaking crates.io crate nyoom-json 0.3.0 [INFO] finished tweaking crates.io crate nyoom-json 0.3.0 [INFO] tweaked toml for crates.io crate nyoom-json 0.3.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate nyoom-json 0.3.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 82 packages to latest compatible versions [INFO] [stderr] Adding criterion v0.4.0 (available: v0.7.0) [INFO] [stderr] Adding sealed v0.5.0 (available: v0.6.0) [INFO] [stderr] Adding strum v0.24.1 (available: v0.27.2) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 506eb1d807bf38c927bf2dae48748b2c82551e7f9ce3ef1dec5fe571799e9af1 [INFO] running `Command { std: "docker" "start" "-a" "506eb1d807bf38c927bf2dae48748b2c82551e7f9ce3ef1dec5fe571799e9af1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "506eb1d807bf38c927bf2dae48748b2c82551e7f9ce3ef1dec5fe571799e9af1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "506eb1d807bf38c927bf2dae48748b2c82551e7f9ce3ef1dec5fe571799e9af1", kill_on_drop: false }` [INFO] [stdout] 506eb1d807bf38c927bf2dae48748b2c82551e7f9ce3ef1dec5fe571799e9af1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4df972d7746f20bf489a0cba23528d146ed4c435b07c7ccd5222d3397ac70466 [INFO] running `Command { std: "docker" "start" "-a" "4df972d7746f20bf489a0cba23528d146ed4c435b07c7ccd5222d3397ac70466", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.101 [INFO] [stderr] Compiling unicode-ident v1.0.18 [INFO] [stderr] Compiling autocfg v1.5.0 [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling serde v1.0.219 [INFO] [stderr] Checking ryu v1.0.20 [INFO] [stderr] Compiling rustversion v1.0.22 [INFO] [stderr] Compiling rayon-core v1.13.0 [INFO] [stderr] Compiling heck v0.4.1 [INFO] [stderr] Compiling libc v0.2.175 [INFO] [stderr] Checking cfg-if v1.0.3 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking itoa v1.0.15 [INFO] [stderr] Compiling serde_json v1.0.143 [INFO] [stderr] Checking either v1.15.0 [INFO] [stderr] Checking os_str_bytes v6.6.1 [INFO] [stderr] Checking plotters-backend v0.3.7 [INFO] [stderr] Checking half v2.6.0 [INFO] [stderr] Checking hashbrown v0.12.3 [INFO] [stderr] Checking ciborium-io v0.2.2 [INFO] [stderr] Checking regex-syntax v0.8.6 [INFO] [stderr] Checking memchr v2.7.5 [INFO] [stderr] Checking clap_lex v0.2.4 [INFO] [stderr] Checking cast v0.3.0 [INFO] [stderr] Checking textwrap v0.16.2 [INFO] [stderr] Checking ciborium-ll v0.2.2 [INFO] [stderr] Checking plotters-svg v0.3.7 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Checking anes v0.1.6 [INFO] [stderr] Checking oorandom v11.1.5 [INFO] [stderr] Checking lazy_static v1.5.0 [INFO] [stderr] Checking walkdir v2.5.0 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Compiling quote v1.0.40 [INFO] [stderr] Checking crossbeam-epoch v0.9.18 [INFO] [stderr] Compiling syn v2.0.106 [INFO] [stderr] Checking crossbeam-deque v0.8.6 [INFO] [stderr] Checking rayon v1.11.0 [INFO] [stderr] Checking clap v3.2.25 [INFO] [stderr] Checking criterion-plot v0.5.0 [INFO] [stderr] Checking plotters v0.3.7 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking regex-automata v0.4.10 [INFO] [stderr] Compiling strum_macros v0.24.3 [INFO] [stderr] Checking regex v1.11.2 [INFO] [stderr] Checking strum v0.24.1 [INFO] [stderr] Compiling serde_derive v1.0.219 [INFO] [stderr] Compiling sealed v0.5.0 [INFO] [stderr] Checking nyoom-json v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:95:21 [INFO] [stdout] | [INFO] [stdout] 95 | pub fn new(buf: &mut S) -> Serializer { [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] 95 | pub fn new(buf: &mut S) -> Serializer<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:128:18 [INFO] [stdout] | [INFO] [stdout] 128 | pub fn array(&mut self) -> ArrayWriter { [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] 128 | pub fn array(&mut self) -> ArrayWriter<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:147:19 [INFO] [stdout] | [INFO] [stdout] 147 | pub fn object(&mut self) -> ObjectWriter { [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] 147 | pub fn object(&mut self) -> ObjectWriter<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:307:23 [INFO] [stdout] | [INFO] [stdout] 307 | pub fn add_object(&mut self) -> ObjectWriter { [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] 307 | pub fn add_object(&mut self) -> ObjectWriter<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:330:22 [INFO] [stdout] | [INFO] [stdout] 330 | pub fn add_array(&mut self) -> ArrayWriter { [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] 330 | pub fn add_array(&mut self) -> ArrayWriter<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing [INFO] [stdout] --> src/lib.rs:372:20 [INFO] [stdout] | [INFO] [stdout] 372 | fn start(buf: &'a mut S) -> ObjectWriter { [INFO] [stdout] | ^^ --------------- the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is named here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 372 | fn start(buf: &'a mut S) -> ObjectWriter<'a, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:470:33 [INFO] [stdout] | [INFO] [stdout] 470 | pub fn object_field(&mut self, key: K) -> ObjectWriter { [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] 470 | pub fn object_field(&mut self, key: K) -> ObjectWriter<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:499:32 [INFO] [stdout] | [INFO] [stdout] 499 | pub fn array_field(&mut self, key: K) -> ArrayWriter { [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] 499 | pub fn array_field(&mut self, key: K) -> ArrayWriter<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking ciborium v0.2.2 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking criterion v0.4.0 [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:95:21 [INFO] [stdout] | [INFO] [stdout] 95 | pub fn new(buf: &mut S) -> Serializer { [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] 95 | pub fn new(buf: &mut S) -> Serializer<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:128:18 [INFO] [stdout] | [INFO] [stdout] 128 | pub fn array(&mut self) -> ArrayWriter { [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] 128 | pub fn array(&mut self) -> ArrayWriter<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:147:19 [INFO] [stdout] | [INFO] [stdout] 147 | pub fn object(&mut self) -> ObjectWriter { [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] 147 | pub fn object(&mut self) -> ObjectWriter<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:307:23 [INFO] [stdout] | [INFO] [stdout] 307 | pub fn add_object(&mut self) -> ObjectWriter { [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] 307 | pub fn add_object(&mut self) -> ObjectWriter<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:330:22 [INFO] [stdout] | [INFO] [stdout] 330 | pub fn add_array(&mut self) -> ArrayWriter { [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] 330 | pub fn add_array(&mut self) -> ArrayWriter<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing [INFO] [stdout] --> src/lib.rs:372:20 [INFO] [stdout] | [INFO] [stdout] 372 | fn start(buf: &'a mut S) -> ObjectWriter { [INFO] [stdout] | ^^ --------------- the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is named here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] help: consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 372 | fn start(buf: &'a mut S) -> ObjectWriter<'a, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:470:33 [INFO] [stdout] | [INFO] [stdout] 470 | pub fn object_field(&mut self, key: K) -> ObjectWriter { [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] 470 | pub fn object_field(&mut self, key: K) -> ObjectWriter<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/lib.rs:499:32 [INFO] [stdout] | [INFO] [stdout] 499 | pub fn array_field(&mut self, key: K) -> ArrayWriter { [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] 499 | pub fn array_field(&mut self, key: K) -> ArrayWriter<'_, S> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> benches/serialize.rs:167:13 [INFO] [stdout] | [INFO] [stdout] 167 | serde_json::to_writer(&mut out, &anime); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 167 | let _ = serde_json::to_writer(&mut out, &anime); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.14s [INFO] running `Command { std: "docker" "inspect" "4df972d7746f20bf489a0cba23528d146ed4c435b07c7ccd5222d3397ac70466", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4df972d7746f20bf489a0cba23528d146ed4c435b07c7ccd5222d3397ac70466", kill_on_drop: false }` [INFO] [stdout] 4df972d7746f20bf489a0cba23528d146ed4c435b07c7ccd5222d3397ac70466