[INFO] cloning repository https://github.com/mb64/prolog [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mb64/prolog" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmb64%2Fprolog", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmb64%2Fprolog'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3ea6fda3ef18b5ce9707e0c2327ef41894c7edf3 [INFO] testing mb64/prolog against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759-retry [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmb64%2Fprolog" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config.toml [INFO] started tweaking git repo https://github.com/mb64/prolog [INFO] finished tweaking git repo https://github.com/mb64/prolog [INFO] tweaked toml for git repo https://github.com/mb64/prolog written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/mb64/prolog on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/mb64/prolog 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Updating git repository `https://github.com/mb64/scoped_map.git` [INFO] [stderr] Updating git repository `https://github.com/mb64/rust-typed-arena` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded const-random-macro v0.1.11 [INFO] [stderr] Downloaded getrandom v0.2.0 [INFO] [stderr] Downloaded dirs-next v1.0.2 [INFO] [stderr] Downloaded const-random v0.1.11 [INFO] [stderr] Downloaded utf8parse v0.2.0 [INFO] [stderr] Downloaded dirs-sys-next v0.1.1 [INFO] [stderr] Downloaded fixedbitset v0.2.0 [INFO] [stderr] Downloaded pretty_env_logger v0.4.0 [INFO] [stderr] Downloaded generic-array v0.12.3 [INFO] [stderr] Downloaded ascii-canvas v2.0.0 [INFO] [stderr] Downloaded logos-derive v0.11.5 [INFO] [stderr] Downloaded cpu-time v1.0.0 [INFO] [stderr] Downloaded docopt v1.1.0 [INFO] [stderr] Downloaded codespan-reporting v0.9.5 [INFO] [stderr] Downloaded hashbrown v0.8.2 [INFO] [stderr] Downloaded rustyline v6.3.0 [INFO] [stderr] Downloaded unicode-segmentation v1.7.0 [INFO] [stderr] Downloaded termcolor v1.1.0 [INFO] [stderr] Downloaded petgraph v0.5.1 [INFO] [stderr] Downloaded ahash v0.4.6 [INFO] [stderr] Downloaded typenum v1.12.0 [INFO] [stderr] Downloaded lalrpop v0.19.1 [INFO] [stderr] Downloaded term v0.5.2 [INFO] [stderr] Downloaded lasso v0.3.1 [INFO] [stderr] Downloaded beef v0.4.4 [INFO] [stderr] Downloaded bit-vec v0.6.2 [INFO] [stderr] Downloaded bit-set v0.5.2 [INFO] [stderr] Downloaded ena v0.14.0 [INFO] [stderr] Downloaded string_cache v0.8.0 [INFO] [stderr] Downloaded lalrpop-util v0.19.1 [INFO] [stderr] Downloaded logos v0.11.4 [INFO] [stderr] Downloaded diff v0.1.12 [INFO] [stderr] Downloaded new_debug_unreachable v1.0.4 [INFO] [stderr] Downloaded ahash v0.3.8 [INFO] [stderr] Downloaded utf8-ranges v1.0.4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c9a5ffb49a2aa0397f96cacf6992206d9cdeb1b89269772a59603f35afe3381a [INFO] running `Command { std: "docker" "start" "-a" "c9a5ffb49a2aa0397f96cacf6992206d9cdeb1b89269772a59603f35afe3381a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c9a5ffb49a2aa0397f96cacf6992206d9cdeb1b89269772a59603f35afe3381a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c9a5ffb49a2aa0397f96cacf6992206d9cdeb1b89269772a59603f35afe3381a", kill_on_drop: false }` [INFO] [stdout] c9a5ffb49a2aa0397f96cacf6992206d9cdeb1b89269772a59603f35afe3381a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2ed462832860585f257adc9596628683f781f5e2dc098c2c96efc615c8b46649 [INFO] running `Command { std: "docker" "start" "-a" "2ed462832860585f257adc9596628683f781f5e2dc098c2c96efc615c8b46649", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling syn v1.0.48 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Compiling regex-syntax v0.6.21 [INFO] [stderr] Compiling typenum v1.12.0 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling serde_derive v1.0.117 [INFO] [stderr] Compiling serde v1.0.117 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Compiling getrandom v0.2.0 [INFO] [stderr] Compiling thread_local v1.0.1 [INFO] [stderr] Compiling indexmap v1.6.0 [INFO] [stderr] Compiling byte-tools v0.3.1 [INFO] [stderr] Compiling block-padding v0.1.5 [INFO] [stderr] Compiling hashbrown v0.9.1 [INFO] [stderr] Compiling siphasher v0.3.3 [INFO] [stderr] Compiling precomputed-hash v0.1.1 [INFO] [stderr] Compiling fixedbitset v0.2.0 [INFO] [stderr] Compiling new_debug_unreachable v1.0.4 [INFO] [stderr] Compiling opaque-debug v0.2.3 [INFO] [stderr] Compiling phf_shared v0.8.0 [INFO] [stderr] Compiling strsim v0.9.3 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling bit-vec v0.6.2 [INFO] [stderr] Compiling fake-simd v0.1.2 [INFO] [stderr] Compiling aho-corasick v0.7.15 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling bit-set v0.5.2 [INFO] [stderr] Compiling itertools v0.9.0 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling ena v0.14.0 [INFO] [stderr] Compiling hashbrown v0.8.2 [INFO] [stderr] Compiling quick-error v1.2.3 [INFO] [stderr] Compiling diff v0.1.12 [INFO] [stderr] Compiling lalrpop-util v0.19.1 [INFO] [stderr] Compiling termcolor v1.1.0 [INFO] [stderr] Compiling humantime v1.3.0 [INFO] [stderr] Compiling utf8-ranges v1.0.4 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling ahash v0.3.8 [INFO] [stderr] Compiling petgraph v0.5.1 [INFO] [stderr] Compiling fnv v1.0.7 [INFO] [stderr] Compiling beef v0.4.4 [INFO] [stderr] Compiling utf8parse v0.2.0 [INFO] [stderr] Compiling unicode-segmentation v1.7.0 [INFO] [stderr] Compiling typed-arena v2.0.1 (https://github.com/mb64/rust-typed-arena#43586bc0) [INFO] [stderr] Compiling codespan-reporting v0.9.5 [INFO] [stderr] Compiling regex v1.4.2 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling generic-array v0.12.3 [INFO] [stderr] Compiling dirs v1.0.5 [INFO] [stderr] Compiling term v0.5.2 [INFO] [stderr] Compiling dirs-sys-next v0.1.1 [INFO] [stderr] Compiling nix v0.18.0 [INFO] [stderr] Compiling lasso v0.3.1 [INFO] [stderr] Compiling dirs-next v1.0.2 [INFO] [stderr] Compiling cpu-time v1.0.0 [INFO] [stderr] Compiling digest v0.8.1 [INFO] [stderr] Compiling block-buffer v0.7.3 [INFO] [stderr] Compiling sha2 v0.8.2 [INFO] [stderr] Compiling ascii-canvas v2.0.0 [INFO] [stderr] Compiling const-random-macro v0.1.11 [INFO] [stderr] Compiling const-random v0.1.11 [INFO] [stderr] Compiling ahash v0.4.6 [INFO] [stderr] Compiling env_logger v0.7.1 [INFO] [stderr] Compiling scoped_map v0.2.0 (https://github.com/mb64/scoped_map.git?branch=main#79b67877) [INFO] [stderr] Compiling pretty_env_logger v0.4.0 [INFO] [stderr] Compiling rustyline v6.3.0 [INFO] [stderr] Compiling logos-derive v0.11.5 [INFO] [stderr] Compiling logos v0.11.4 [INFO] [stderr] Compiling string_cache v0.8.0 [INFO] [stderr] Compiling docopt v1.1.0 [INFO] [stderr] Compiling lalrpop v0.19.1 [INFO] [stderr] Compiling prolog v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: lint `mutable_borrow_reservation_conflict` has been removed: now allowed, see issue #59159 for more information [INFO] [stdout] --> src/main.rs:3:10 [INFO] [stdout] | [INFO] [stdout] 3 | #![allow(mutable_borrow_reservation_conflict)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(renamed_and_removed_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `load_file` is never used [INFO] [stdout] --> src/main.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn load_file(filename: &str, ctx: &mut Context) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&[vars::VarId]` instead of cloning the inner type [INFO] [stdout] --> src/unify.rs:52:36 [INFO] [stdout] | [INFO] [stdout] 52 | let args = args.clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> src/unify.rs:111:13 [INFO] [stdout] | [INFO] [stdout] 111 | drop(locals); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `vars::LocalVars<'_>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 111 - drop(locals); [INFO] [stdout] 111 + let _ = locals; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 26s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: lalrpop v0.19.1 [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" "2ed462832860585f257adc9596628683f781f5e2dc098c2c96efc615c8b46649", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2ed462832860585f257adc9596628683f781f5e2dc098c2c96efc615c8b46649", kill_on_drop: false }` [INFO] [stdout] 2ed462832860585f257adc9596628683f781f5e2dc098c2c96efc615c8b46649 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cae1e2080ffe7293d68e770f76f9c324a3d5f4cdb7f2517bbe0c08909cdaff6d [INFO] running `Command { std: "docker" "start" "-a" "cae1e2080ffe7293d68e770f76f9c324a3d5f4cdb7f2517bbe0c08909cdaff6d", kill_on_drop: false }` [INFO] [stderr] Compiling prolog v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: lint `mutable_borrow_reservation_conflict` has been removed: now allowed, see issue #59159 for more information [INFO] [stdout] --> src/main.rs:3:10 [INFO] [stdout] | [INFO] [stdout] 3 | #![allow(mutable_borrow_reservation_conflict)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(renamed_and_removed_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `load_file` is never used [INFO] [stdout] --> src/main.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn load_file(filename: &str, ctx: &mut Context) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&[vars::VarId]` instead of cloning the inner type [INFO] [stdout] --> src/unify.rs:52:36 [INFO] [stdout] | [INFO] [stdout] 52 | let args = args.clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> src/unify.rs:111:13 [INFO] [stdout] | [INFO] [stdout] 111 | drop(locals); [INFO] [stdout] | ^^^^^------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `vars::LocalVars<'_>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 111 - drop(locals); [INFO] [stdout] 111 + let _ = locals; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 1.71s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: lalrpop v0.19.1 [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" "cae1e2080ffe7293d68e770f76f9c324a3d5f4cdb7f2517bbe0c08909cdaff6d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cae1e2080ffe7293d68e770f76f9c324a3d5f4cdb7f2517bbe0c08909cdaff6d", kill_on_drop: false }` [INFO] [stdout] cae1e2080ffe7293d68e770f76f9c324a3d5f4cdb7f2517bbe0c08909cdaff6d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 97559b1b2eeb85451a993f2408936a10aa0042b0b84ff7d5fb2caf9664efe026 [INFO] running `Command { std: "docker" "start" "-a" "97559b1b2eeb85451a993f2408936a10aa0042b0b84ff7d5fb2caf9664efe026", kill_on_drop: false }` [INFO] [stderr] warning: lint `mutable_borrow_reservation_conflict` has been removed: now allowed, see issue #59159 for more information [INFO] [stderr] --> src/main.rs:3:10 [INFO] [stderr] | [INFO] [stderr] 3 | #![allow(mutable_borrow_reservation_conflict)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(renamed_and_removed_lints)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function `load_file` is never used [INFO] [stderr] --> src/main.rs:67:4 [INFO] [stderr] | [INFO] [stderr] 67 | fn load_file(filename: &str, ctx: &mut Context) { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&[vars::VarId]` instead of cloning the inner type [INFO] [stderr] --> src/unify.rs:52:36 [INFO] [stderr] | [INFO] [stderr] 52 | let args = args.clone(); [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stderr] [INFO] [stderr] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stderr] --> src/unify.rs:111:13 [INFO] [stderr] | [INFO] [stderr] 111 | drop(locals); [INFO] [stderr] | ^^^^^------^ [INFO] [stderr] | | [INFO] [stderr] | argument has type `vars::LocalVars<'_>` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the expression or result [INFO] [stderr] | [INFO] [stderr] 111 - drop(locals); [INFO] [stderr] 111 + let _ = locals; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: `prolog` (bin "prolog" test) generated 4 warnings [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: lalrpop v0.19.1 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1` [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/prolog-e4983b7c8860cc5c) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "97559b1b2eeb85451a993f2408936a10aa0042b0b84ff7d5fb2caf9664efe026", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "97559b1b2eeb85451a993f2408936a10aa0042b0b84ff7d5fb2caf9664efe026", kill_on_drop: false }` [INFO] [stdout] 97559b1b2eeb85451a993f2408936a10aa0042b0b84ff7d5fb2caf9664efe026