[INFO] updating cached repository https://github.com/Lakret/backtrack_rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }` [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 21a7dfdaf0c1a79561b1e3182f90e30563868603 [INFO] checking Lakret/backtrack_rs/21a7dfdaf0c1a79561b1e3182f90e30563868603 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%2FLakret%2Fbacktrack_rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Lakret/backtrack_rs 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/Lakret/backtrack_rs [INFO] finished tweaking git repo https://github.com/Lakret/backtrack_rs [INFO] tweaked toml for git repo https://github.com/Lakret/backtrack_rs written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Lakret/backtrack_rs 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-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] c0f4cdd905eb1d2041ee761c4e98663def48bff4e2d53b6d04b3a758548f9b38 [INFO] running `Command { std: "docker" "start" "-a" "c0f4cdd905eb1d2041ee761c4e98663def48bff4e2d53b6d04b3a758548f9b38", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c0f4cdd905eb1d2041ee761c4e98663def48bff4e2d53b6d04b3a758548f9b38", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c0f4cdd905eb1d2041ee761c4e98663def48bff4e2d53b6d04b3a758548f9b38", kill_on_drop: false }` [INFO] [stdout] c0f4cdd905eb1d2041ee761c4e98663def48bff4e2d53b6d04b3a758548f9b38 [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] fd50e898cccb39d44f49d8ab0725763be82e942ce8bc702d956649c3f88f5ed4 [INFO] running `Command { std: "docker" "start" "-a" "fd50e898cccb39d44f49d8ab0725763be82e942ce8bc702d956649c3f88f5ed4", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling libc v0.2.70 [INFO] [stderr] Compiling serde v1.0.110 [INFO] [stderr] Compiling proc-macro2 v1.0.12 [INFO] [stderr] Compiling ryu v1.0.4 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Checking either v1.5.3 [INFO] [stderr] Checking itoa v0.4.5 [INFO] [stderr] Compiling rayon-core v1.7.0 [INFO] [stderr] Compiling syn v1.0.21 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking unicode-width v0.1.7 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Checking regex-syntax v0.6.17 [INFO] [stderr] Checking walkdir v2.3.1 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking oorandom v11.1.1 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling memoffset v0.5.4 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Checking clap v2.33.1 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Compiling quote v1.0.5 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking criterion-plot v0.4.2 [INFO] [stderr] Checking crossbeam-queue v0.2.1 [INFO] [stderr] Checking crossbeam-channel v0.4.2 [INFO] [stderr] Checking regex v1.3.7 [INFO] [stderr] Checking crossbeam-deque v0.7.3 [INFO] [stderr] Checking plotters v0.2.14 [INFO] [stderr] Checking crossbeam v0.7.3 [INFO] [stderr] Checking backtrack_rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::thread::JoinHandle` [INFO] [stdout] --> src/lib.rs:210:5 [INFO] [stdout] | [INFO] [stdout] 210 | use std::thread::JoinHandle; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reduced_domain` [INFO] [stdout] --> src/ac3.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let reduced_domain = csp [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reduced_domain` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/ac3.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | [x, y] => {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/ac3.rs:33:11 [INFO] [stdout] | [INFO] [stdout] 33 | [x, y] => {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ac3.rs:15:7 [INFO] [stdout] | [INFO] [stdout] 15 | let mut constraint_refs = csp.constraints.iter().collect::>(); [INFO] [stdout] | ----^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `iteration` [INFO] [stdout] --> src/lib.rs:284:3 [INFO] [stdout] | [INFO] [stdout] 284 | iteration: u32, [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_iteration` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lazy_static::lazy_static` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use lazy_static::lazy_static; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rayon v1.3.0 [INFO] [stderr] Checking bstr v0.2.13 [INFO] [stderr] Checking serde_json v1.0.53 [INFO] [stderr] Checking csv v1.1.3 [INFO] [stderr] Checking tinytemplate v1.0.4 [INFO] [stderr] Compiling serde_derive v1.0.110 [INFO] [stderr] Checking criterion v0.3.2 [INFO] [stdout] warning: unused import: `std::thread::JoinHandle` [INFO] [stdout] --> src/lib.rs:210:5 [INFO] [stdout] | [INFO] [stdout] 210 | use std::thread::JoinHandle; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `lazy_static::lazy_static` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use lazy_static::lazy_static; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `black_box` [INFO] [stdout] --> benches/backtracking_bench.rs:1:17 [INFO] [stdout] | [INFO] [stdout] 1 | use criterion::{black_box, criterion_group, criterion_main, BenchmarkId, Criterion}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reduced_domain` [INFO] [stdout] --> src/ac3.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let reduced_domain = csp [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reduced_domain` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/ac3.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | [x, y] => {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/ac3.rs:33:11 [INFO] [stdout] | [INFO] [stdout] 33 | [x, y] => {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ac3.rs:15:7 [INFO] [stdout] | [INFO] [stdout] 15 | let mut constraint_refs = csp.constraints.iter().collect::>(); [INFO] [stdout] | ----^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `iteration` [INFO] [stdout] --> src/lib.rs:284:3 [INFO] [stdout] | [INFO] [stdout] 284 | iteration: u32, [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_iteration` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.09s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.2 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1` [INFO] running `Command { std: "docker" "inspect" "fd50e898cccb39d44f49d8ab0725763be82e942ce8bc702d956649c3f88f5ed4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fd50e898cccb39d44f49d8ab0725763be82e942ce8bc702d956649c3f88f5ed4", kill_on_drop: false }` [INFO] [stdout] fd50e898cccb39d44f49d8ab0725763be82e942ce8bc702d956649c3f88f5ed4