[INFO] cloning repository https://github.com/Lukasz825700516/mcfrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lukasz825700516/mcfrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukasz825700516%2Fmcfrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukasz825700516%2Fmcfrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11bc09899c845cf3dd709ace32b2173b0255d0dc
[INFO] checking Lukasz825700516/mcfrs/11bc09899c845cf3dd709ace32b2173b0255d0dc against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukasz825700516%2Fmcfrs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lukasz825700516/mcfrs 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 git repo https://github.com/Lukasz825700516/mcfrs
[INFO] finished tweaking git repo https://github.com/Lukasz825700516/mcfrs
[INFO] tweaked toml for git repo https://github.com/Lukasz825700516/mcfrs written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Lukasz825700516/mcfrs already has a lockfile, it will not be regenerated
[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-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] 4f8ce455af3ffc2245fc9f284a1e0e9850a670e8c6d9a259a0f0dfd8ebe845fb
[INFO] running `Command { std: "docker" "start" "-a" "4f8ce455af3ffc2245fc9f284a1e0e9850a670e8c6d9a259a0f0dfd8ebe845fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f8ce455af3ffc2245fc9f284a1e0e9850a670e8c6d9a259a0f0dfd8ebe845fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f8ce455af3ffc2245fc9f284a1e0e9850a670e8c6d9a259a0f0dfd8ebe845fb", kill_on_drop: false }`
[INFO] [stdout] 4f8ce455af3ffc2245fc9f284a1e0e9850a670e8c6d9a259a0f0dfd8ebe845fb
[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] b673f63e8790f4c7ad3372a19a907ce431d0e5ca340b4fd2a2acecabeffb7730
[INFO] running `Command { std: "docker" "start" "-a" "b673f63e8790f4c7ad3372a19a907ce431d0e5ca340b4fd2a2acecabeffb7730", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking generic-array v0.14.4
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking mcfrs1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/mcfrs/compiler/macro_compiler.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, HashSet}, iter::{Peekable, Rev, repeat}, ops::Range};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/mcfrs/compiler/macro_compiler.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, HashSet}, iter::{Peekable, Rev, repeat}, ops::Range};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sha2::digest::generic_array::sequence::Split`
[INFO] [stdout]  --> src/mcfrs/compiler/macro_compiler.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sha2::digest::generic_array::sequence::Split;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sha2::digest::generic_array::sequence::Split`
[INFO] [stdout]  --> src/mcfrs/compiler/macro_compiler.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sha2::digest::generic_array::sequence::Split;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `burn` is never used
[INFO] [stdout]  --> src/mcfrs/compiler/scope_burner.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait ScopeBurnerExt<'a>: Sized + Iterator<Item = Scope<'a>> {
[INFO] [stdout]   |           -------------- method in this trait
[INFO] [stdout] 6 |     fn burn(self) -> Result<(), std::io::Error>;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `namespace` is never read
[INFO] [stdout]  --> src/mcfrs/compiler/macro_compiler.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct MacroDefinition<'a> {
[INFO] [stdout]   |            --------------- field in this struct
[INFO] [stdout] 9 |     namespace: &'a Namespace<'a>,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_reference_id` is never used
[INFO] [stdout]   --> src/mcfrs/scope.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<'a> Scope<'a> {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn set_reference_id(&mut self, id: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `burn` is never used
[INFO] [stdout]  --> src/mcfrs/compiler/scope_burner.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait ScopeBurnerExt<'a>: Sized + Iterator<Item = Scope<'a>> {
[INFO] [stdout]   |           -------------- method in this trait
[INFO] [stdout] 6 |     fn burn(self) -> Result<(), std::io::Error>;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `namespace` is never read
[INFO] [stdout]  --> src/mcfrs/compiler/macro_compiler.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct MacroDefinition<'a> {
[INFO] [stdout]   |            --------------- field in this struct
[INFO] [stdout] 9 |     namespace: &'a Namespace<'a>,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_reference_id` is never used
[INFO] [stdout]   --> src/mcfrs/scope.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<'a> Scope<'a> {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn set_reference_id(&mut self, id: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.45s
[INFO] running `Command { std: "docker" "inspect" "b673f63e8790f4c7ad3372a19a907ce431d0e5ca340b4fd2a2acecabeffb7730", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b673f63e8790f4c7ad3372a19a907ce431d0e5ca340b4fd2a2acecabeffb7730", kill_on_drop: false }`
[INFO] [stdout] b673f63e8790f4c7ad3372a19a907ce431d0e5ca340b4fd2a2acecabeffb7730