[INFO] fetching crate nyoom-json 0.3.0...
[INFO] checking nyoom-json-0.3.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate nyoom-json 0.3.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate nyoom-json 0.3.0 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 81 packages to latest compatible versions
[INFO] [stderr]       Adding anes v0.1.6 (available: v0.2.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.6.0)
[INFO] [stderr]       Adding clap v3.2.25 (available: v4.5.18)
[INFO] [stderr]       Adding clap_lex v0.2.4 (available: v0.7.2)
[INFO] [stderr]       Adding criterion v0.4.0 (available: v0.5.1)
[INFO] [stderr]       Adding hashbrown v0.12.3 (available: v0.14.5)
[INFO] [stderr]       Adding heck v0.4.1 (available: v0.5.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (available: v0.4.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.5.0)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.13.0)
[INFO] [stderr]       Adding os_str_bytes v6.6.1 (available: v7.0.0)
[INFO] [stderr]       Adding strum v0.24.1 (available: v0.26.3)
[INFO] [stderr]       Adding strum_macros v0.24.3 (available: v0.26.4)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.79)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e00e8166ab18e241cc10112cbe26b0407fe36ae5e5ed5a2a29ee0cd0eb8ed52
[INFO] running `Command { std: "docker" "start" "-a" "5e00e8166ab18e241cc10112cbe26b0407fe36ae5e5ed5a2a29ee0cd0eb8ed52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e00e8166ab18e241cc10112cbe26b0407fe36ae5e5ed5a2a29ee0cd0eb8ed52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e00e8166ab18e241cc10112cbe26b0407fe36ae5e5ed5a2a29ee0cd0eb8ed52", kill_on_drop: false }`
[INFO] [stdout] 5e00e8166ab18e241cc10112cbe26b0407fe36ae5e5ed5a2a29ee0cd0eb8ed52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fbea2bd64498100b0a774d6401ae6034ead9b2ab242e10c0824cab66d661264
[INFO] running `Command { std: "docker" "start" "-a" "0fbea2bd64498100b0a774d6401ae6034ead9b2ab242e10c0824cab66d661264", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling rustversion v1.0.17
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]     Checking half v2.4.1
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking oorandom v11.1.4
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking plotters-svg v0.3.7
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling sealed v0.5.0
[INFO] [stderr]     Checking nyoom-json v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/lib.rs:372:45
[INFO] [stdout]     |
[INFO] [stdout] 371 | impl<'a, S: JsonBuffer> ObjectWriter<'a, S> {
[INFO] [stdout]     |      -- lifetime `'a` declared here
[INFO] [stdout] 372 |     fn start(buf: &'a mut S) -> ObjectWriter<S> {
[INFO] [stdout]     |                                             ^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/lib.rs:372:45
[INFO] [stdout]     |
[INFO] [stdout] 371 | impl<'a, S: JsonBuffer> ObjectWriter<'a, S> {
[INFO] [stdout]     |      -- lifetime `'a` declared here
[INFO] [stdout] 372 |     fn start(buf: &'a mut S) -> ObjectWriter<S> {
[INFO] [stdout]     |                                             ^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.33s
[INFO] running `Command { std: "docker" "inspect" "0fbea2bd64498100b0a774d6401ae6034ead9b2ab242e10c0824cab66d661264", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fbea2bd64498100b0a774d6401ae6034ead9b2ab242e10c0824cab66d661264", kill_on_drop: false }`
[INFO] [stdout] 0fbea2bd64498100b0a774d6401ae6034ead9b2ab242e10c0824cab66d661264