[INFO] fetching crate rng_buffer 0.1.1...
[INFO] checking rng_buffer-0.1.1 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate rng_buffer 0.1.1 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate rng_buffer 0.1.1 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 rng_buffer 0.1.1
[INFO] finished tweaking crates.io crate rng_buffer 0.1.1
[INFO] tweaked toml for crates.io crate rng_buffer 0.1.1 written to /workspace/builds/worker-1-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]     Updating crates.io index
[INFO] [stderr]      Locking 84 packages to latest compatible versions
[INFO] [stderr]       Adding anes v0.1.6 (available: v0.2.0)
[INFO] [stderr]       Adding delegate v0.12.0 (available: v0.13.0)
[INFO] [stderr]       Adding hermit-abi v0.3.9 (available: v0.4.0)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.13.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 0d333a73f940b2f829cb4f0f3c8786e5bc6f5c8413c94a4d795928d084b0ea18
[INFO] running `Command { std: "docker" "start" "-a" "0d333a73f940b2f829cb4f0f3c8786e5bc6f5c8413c94a4d795928d084b0ea18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d333a73f940b2f829cb4f0f3c8786e5bc6f5c8413c94a4d795928d084b0ea18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d333a73f940b2f829cb4f0f3c8786e5bc6f5c8413c94a4d795928d084b0ea18", kill_on_drop: false }`
[INFO] [stdout] 0d333a73f940b2f829cb4f0f3c8786e5bc6f5c8413c94a4d795928d084b0ea18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 52e2eb4c3b3c5090dfaeecd01ff1e6e840bae92aa6923a279499dcf11df3f4a7
[INFO] running `Command { std: "docker" "start" "-a" "52e2eb4c3b3c5090dfaeecd01ff1e6e840bae92aa6923a279499dcf11df3f4a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling delegate v0.12.0
[INFO] [stderr]     Checking bytemuck v1.18.0
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking iai v0.1.1
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rng_buffer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde v1.0.210
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stdout] warning: function `bench_reseeding_from_os` is never used
[INFO] [stdout]   --> benches/raw.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn bench_reseeding_from_os() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_2` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 | bench_iai!(2);
[INFO] [stdout]    | ------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_8` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 | bench_iai!(8);
[INFO] [stdout]    | ------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_16` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 | bench_iai!(16);
[INFO] [stdout]    | -------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bench_reseeding_from_os` is never used
[INFO] [stdout]   --> benches/raw.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn bench_reseeding_from_os() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_2` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 | bench_iai!(2);
[INFO] [stdout]    | ------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_4` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 | bench_iai!(4);
[INFO] [stdout]    | ------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_8` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 | bench_iai!(8);
[INFO] [stdout]    | ------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_16` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 | bench_iai!(16);
[INFO] [stdout]    | -------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_2` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 | bench_iai!(2);
[INFO] [stdout]    | ------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_4` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 | bench_iai!(4);
[INFO] [stdout]    | ------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_16` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 | bench_iai!(16);
[INFO] [stdout]    | -------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bench_reseeding_from_os` is never used
[INFO] [stdout]   --> benches/raw.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn bench_reseeding_from_os() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_4` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 | bench_iai!(4);
[INFO] [stdout]    | ------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_8` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 | bench_iai!(8);
[INFO] [stdout]    | ------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_16` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 | bench_iai!(16);
[INFO] [stdout]    | -------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bench_reseeding_from_os` is never used
[INFO] [stdout]   --> benches/raw.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn bench_reseeding_from_os() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_2` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 | bench_iai!(2);
[INFO] [stdout]    | ------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_4` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 | bench_iai!(4);
[INFO] [stdout]    | ------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `buffer_size_8` is never used
[INFO] [stdout]   --> benches/raw.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 |             pub fn [< buffer_size_ $n >]() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 | bench_iai!(8);
[INFO] [stdout]    | ------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `bench_iai` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_in_rayon` is never used
[INFO] [stdout]   --> benches/raw.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn run_in_rayon(func: fn() -> ()) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.57s
[INFO] running `Command { std: "docker" "inspect" "52e2eb4c3b3c5090dfaeecd01ff1e6e840bae92aa6923a279499dcf11df3f4a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52e2eb4c3b3c5090dfaeecd01ff1e6e840bae92aa6923a279499dcf11df3f4a7", kill_on_drop: false }`
[INFO] [stdout] 52e2eb4c3b3c5090dfaeecd01ff1e6e840bae92aa6923a279499dcf11df3f4a7