[INFO] fetching crate rs-smtp 1.0.1...
[INFO] checking rs-smtp-1.0.1 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate rs-smtp 1.0.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate rs-smtp 1.0.1 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 rs-smtp 1.0.1
[INFO] finished tweaking crates.io crate rs-smtp 1.0.1
[INFO] tweaked toml for crates.io crate rs-smtp 1.0.1 written to /workspace/builds/worker-2-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 87 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.21.7 (available: v0.22.1)
[INFO] [stderr]       Adding hermit-abi v0.3.9 (available: v0.4.0)
[INFO] [stderr]       Adding ring v0.16.20 (available: v0.17.8)
[INFO] [stderr]       Adding rustls v0.20.9 (available: v0.23.13)
[INFO] [stderr]       Adding spin v0.5.2 (available: v0.9.8)
[INFO] [stderr]       Adding tokio-rustls v0.23.4 (available: v0.26.0)
[INFO] [stderr]       Adding untrusted v0.7.1 (available: v0.9.0)
[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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] cb11294d9471831f9069b5dfa9dbe3505737ee10a6e55126fbf7556dd2168f7e
[INFO] running `Command { std: "docker" "start" "-a" "cb11294d9471831f9069b5dfa9dbe3505737ee10a6e55126fbf7556dd2168f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb11294d9471831f9069b5dfa9dbe3505737ee10a6e55126fbf7556dd2168f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb11294d9471831f9069b5dfa9dbe3505737ee10a6e55126fbf7556dd2168f7e", kill_on_drop: false }`
[INFO] [stdout] cb11294d9471831f9069b5dfa9dbe3505737ee10a6e55126fbf7556dd2168f7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 115e0092b42092d0ceca6f099164fc20baed0f5d8e2a6a6ff553f02bfc2bd722
[INFO] running `Command { std: "docker" "start" "-a" "115e0092b42092d0ceca6f099164fc20baed0f5d8e2a6a6ff553f02bfc2bd722", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling rustls v0.20.9
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking mio v1.0.2
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]     Checking thiserror v1.0.64
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tokio v1.40.0
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking webpki v0.22.4
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking rs-smtp v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `future::Future`
[INFO] [stdout]  --> src/data.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{pin::Pin, future::Future, task::Poll, io::{ErrorKind, Error}};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/data.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{self, AsyncRead, AsyncBufReadExt, AsyncBufRead, BufReader};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `future::Future`
[INFO] [stdout]  --> src/data.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{pin::Pin, future::Future, task::Poll, io::{ErrorKind, Error}};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/data.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{self, AsyncRead, AsyncBufReadExt, AsyncBufRead, BufReader};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `enhanced_code` is never read
[INFO] [stdout]  --> src/data.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct SMTPError {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 8 |     code: u16,
[INFO] [stdout] 9 |     enhanced_code: EnhancedCode,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `enhanced_code` is never read
[INFO] [stdout]  --> src/data.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct SMTPError {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 8 |     code: u16,
[INFO] [stdout] 9 |     enhanced_code: EnhancedCode,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `err_data_too_large`, `err_auth_required`, `err_auth_unsupported`, `error`, and `is_temporary` are never used
[INFO] [stdout]   --> src/data.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl SMTPError {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 35 |     pub fn err_data_too_large() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn err_auth_required() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn err_auth_unsupported() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     pub fn error(&self) -> String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn is_temporary(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ERR_TOO_LONG_LINE` is never used
[INFO] [stdout]  --> src/lengthlimit_reader.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const ERR_TOO_LONG_LINE: &str = "smtp: too long a line in input stream";
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LineLimitReader` is never constructed
[INFO] [stdout]  --> src/lengthlimit_reader.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct LineLimitReader<R: AsyncRead> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `read` are never used
[INFO] [stdout]   --> src/lengthlimit_reader.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<R: AsyncRead + Unpin> LineLimitReader<R> {
[INFO] [stdout]    | --------------------------------------------- associated items in this implementation
[INFO] [stdout] 14 |     pub fn new(r: R, line_limit: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     async fn read(&mut self, b: &mut [u8]) -> Result<usize> {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `err_data_too_large`, `err_auth_required`, `err_auth_unsupported`, `error`, and `is_temporary` are never used
[INFO] [stdout]   --> src/data.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl SMTPError {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 35 |     pub fn err_data_too_large() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn err_auth_required() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn err_auth_unsupported() -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     pub fn error(&self) -> String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn is_temporary(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ERR_TOO_LONG_LINE` is never used
[INFO] [stdout]  --> src/lengthlimit_reader.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const ERR_TOO_LONG_LINE: &str = "smtp: too long a line in input stream";
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LineLimitReader` is never constructed
[INFO] [stdout]  --> src/lengthlimit_reader.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct LineLimitReader<R: AsyncRead> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `read` are never used
[INFO] [stdout]   --> src/lengthlimit_reader.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<R: AsyncRead + Unpin> LineLimitReader<R> {
[INFO] [stdout]    | --------------------------------------------- associated items in this implementation
[INFO] [stdout] 14 |     pub fn new(r: R, line_limit: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     async fn read(&mut self, b: &mut [u8]) -> Result<usize> {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.05s
[INFO] running `Command { std: "docker" "inspect" "115e0092b42092d0ceca6f099164fc20baed0f5d8e2a6a6ff553f02bfc2bd722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "115e0092b42092d0ceca6f099164fc20baed0f5d8e2a6a6ff553f02bfc2bd722", kill_on_drop: false }`
[INFO] [stdout] 115e0092b42092d0ceca6f099164fc20baed0f5d8e2a6a6ff553f02bfc2bd722