[INFO] fetching crate espresso 0.0.1...
[INFO] checking espresso-0.0.1 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate espresso 0.0.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate espresso 0.0.1 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate espresso 0.0.1
[INFO] finished tweaking crates.io crate espresso 0.0.1
[INFO] tweaked toml for crates.io crate espresso 0.0.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.10.1 (available: v0.22.1)
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.6.0)
[INFO] [stderr]       Adding bytes v0.5.6 (available: v1.7.2)
[INFO] [stderr]       Adding ron v0.5.1 (available: v0.8.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce966d36cf25c4645c90dba1af1f7437838e39a3305f47e616fa9c2837717db9
[INFO] running `Command { std: "docker" "start" "-a" "ce966d36cf25c4645c90dba1af1f7437838e39a3305f47e616fa9c2837717db9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce966d36cf25c4645c90dba1af1f7437838e39a3305f47e616fa9c2837717db9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce966d36cf25c4645c90dba1af1f7437838e39a3305f47e616fa9c2837717db9", kill_on_drop: false }`
[INFO] [stdout] ce966d36cf25c4645c90dba1af1f7437838e39a3305f47e616fa9c2837717db9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4358406e9b55b3a77bdd2f61664b868f8710b963b73c14ee3c764460f3028a06
[INFO] running `Command { std: "docker" "start" "-a" "4358406e9b55b3a77bdd2f61664b868f8710b963b73c14ee3c764460f3028a06", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling thiserror v1.0.64
[INFO] [stderr]    Compiling anyhow v1.0.89
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling thiserror-impl v1.0.64
[INFO] [stderr]     Checking ron v0.5.1
[INFO] [stderr]     Checking espresso v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/buf_ext.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/class.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `RefCell` and `Ref`
[INFO] [stdout]  --> src/class.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cell::{RefCell, Ref};
[INFO] [stdout]   |                 ^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/buf_ext.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/class.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `RefCell` and `Ref`
[INFO] [stdout]  --> src/class.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cell::{RefCell, Ref};
[INFO] [stdout]   |                 ^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ValueTooLarge` is never constructed
[INFO] [stdout]   --> src/buf_ext.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub enum TryError {
[INFO] [stdout]    |          -------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 10 |     ValueTooLarge,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TryError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]   --> src/buf_ext.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub trait WriteFrom<T: Sized>: BufMut {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] 38 |     fn write(&mut self, value: &T) -> usize;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Field` is never constructed
[INFO] [stdout]    --> src/class.rs:442:12
[INFO] [stdout]     |
[INFO] [stdout] 442 | pub struct Field {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Field` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ValueTooLarge` is never constructed
[INFO] [stdout]   --> src/buf_ext.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub enum TryError {
[INFO] [stdout]    |          -------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 10 |     ValueTooLarge,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TryError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]   --> src/buf_ext.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub trait WriteFrom<T: Sized>: BufMut {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] 38 |     fn write(&mut self, value: &T) -> usize;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Field` is never constructed
[INFO] [stdout]    --> src/class.rs:442:12
[INFO] [stdout]     |
[INFO] [stdout] 442 | pub struct Field {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Field` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.27s
[INFO] running `Command { std: "docker" "inspect" "4358406e9b55b3a77bdd2f61664b868f8710b963b73c14ee3c764460f3028a06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4358406e9b55b3a77bdd2f61664b868f8710b963b73c14ee3c764460f3028a06", kill_on_drop: false }`
[INFO] [stdout] 4358406e9b55b3a77bdd2f61664b868f8710b963b73c14ee3c764460f3028a06