[INFO] cloning repository https://github.com/rust-lang-nursery/chalk [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-lang-nursery/chalk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2Fchalk", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2Fchalk'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] df8aa321382dd2fe4c8f6903da54ae288abaff4f [INFO] checking rust-lang-nursery/chalk against try#024378d9203a4009ed73d6db2681b88a8d74ce7a for pr-112160 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2Fchalk" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rust-lang-nursery/chalk on toolchain 024378d9203a4009ed73d6db2681b88a8d74ce7a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rust-lang-nursery/chalk [INFO] finished tweaking git repo https://github.com/rust-lang-nursery/chalk [INFO] tweaked toml for git repo https://github.com/rust-lang-nursery/chalk written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/rust-lang-nursery/chalk 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" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c64ff0afcfa057e8900f5273aefff50bffcc1b9553c4887b1c4c47e93a13b40b [INFO] running `Command { std: "docker" "start" "-a" "c64ff0afcfa057e8900f5273aefff50bffcc1b9553c4887b1c4c47e93a13b40b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c64ff0afcfa057e8900f5273aefff50bffcc1b9553c4887b1c4c47e93a13b40b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c64ff0afcfa057e8900f5273aefff50bffcc1b9553c4887b1c4c47e93a13b40b", kill_on_drop: false }` [INFO] [stdout] c64ff0afcfa057e8900f5273aefff50bffcc1b9553c4887b1c4c47e93a13b40b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4272c2b7b62b568fbaa5a2a332231cf5386371f384c0abdd484eee2035dbbc9c [INFO] running `Command { std: "docker" "start" "-a" "4272c2b7b62b568fbaa5a2a332231cf5386371f384c0abdd484eee2035dbbc9c", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.54 [INFO] [stderr] Compiling quote v1.0.26 [INFO] [stderr] Compiling unicode-ident v1.0.8 [INFO] [stderr] Compiling libc v0.2.109 [INFO] [stderr] Compiling syn v1.0.82 [INFO] [stderr] Compiling indexmap v1.8.0 [INFO] [stderr] Compiling serde v1.0.130 [INFO] [stderr] Compiling instant v0.1.12 [INFO] [stderr] Compiling smallvec v1.7.0 [INFO] [stderr] Compiling crunchy v0.2.2 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling hashbrown v0.11.2 [INFO] [stderr] Compiling tiny-keccak v2.0.2 [INFO] [stderr] Compiling siphasher v0.3.7 [INFO] [stderr] Checking regex v1.5.5 [INFO] [stderr] Compiling lock_api v0.4.5 [INFO] [stderr] Compiling bit-vec v0.6.3 [INFO] [stderr] Compiling new_debug_unreachable v1.0.4 [INFO] [stderr] Compiling phf_shared v0.8.0 [INFO] [stderr] Compiling fixedbitset v0.2.0 [INFO] [stderr] Compiling precomputed-hash v0.1.1 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling bit-set v0.5.2 [INFO] [stderr] Checking matchers v0.1.0 [INFO] [stderr] Compiling ena v0.14.0 [INFO] [stderr] Checking thread_local v1.1.4 [INFO] [stderr] Compiling itertools v0.10.1 [INFO] [stderr] Checking tracing-log v0.1.2 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling pico-args v0.4.2 [INFO] [stderr] Compiling diff v0.1.12 [INFO] [stderr] Compiling crossbeam-utils v0.8.9 [INFO] [stderr] Checking petgraph v0.5.1 [INFO] [stderr] Checking oorandom v11.1.3 [INFO] [stderr] Checking unicode-segmentation v1.8.0 [INFO] [stderr] Checking lalrpop-util v0.19.6 [INFO] [stderr] Checking utf8parse v0.2.0 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking dissimilar v1.0.3 [INFO] [stderr] Compiling syn v2.0.10 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Checking expect-test v1.2.1 [INFO] [stderr] Checking pretty_assertions v0.6.1 [INFO] [stderr] Checking unicode-xid v0.2.2 [INFO] [stderr] Checking parking_lot_core v0.8.5 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking nix v0.19.1 [INFO] [stderr] Checking fs2 v0.4.3 [INFO] [stderr] Compiling dirs-sys-next v0.1.2 [INFO] [stderr] Compiling dirs-next v2.0.0 [INFO] [stderr] Checking parking_lot v0.11.2 [INFO] [stderr] Compiling term v0.7.0 [INFO] [stderr] Compiling ascii-canvas v3.0.0 [INFO] [stderr] Checking rustyline v7.1.0 [INFO] [stderr] Checking synstructure v0.13.0 [INFO] [stderr] Checking chalk-derive v0.92.0-dev.0 (/opt/rustwide/workdir/chalk-derive) [INFO] [stderr] Compiling serde_derive v1.0.130 [INFO] [stderr] Compiling tracing-attributes v0.1.18 [INFO] [stderr] Compiling salsa-macros v0.16.0 [INFO] [stderr] Checking chalk-ir v0.92.0-dev.0 (/opt/rustwide/workdir/chalk-ir) [INFO] [stderr] Checking tracing v0.1.29 [INFO] [stderr] Checking salsa v0.16.1 [INFO] [stderr] Checking tracing-subscriber v0.3.3 [INFO] [stderr] Checking tracing-tree v0.2.0 [INFO] [stderr] Checking chalk-solve v0.92.0-dev.0 (/opt/rustwide/workdir/chalk-solve) [INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> chalk-solve/src/logging_db.rs:143:21 [INFO] [stdout] | [INFO] [stdout] 143 | self.ws.db().borrow().generator_datum(generator_id) [INFO] [stdout] | ^^^^^^^^^ unnecessary method call [INFO] [stdout] | [INFO] [stdout] = note: the type `DB` does not implement `Borrow`, so calling `borrow` on `&DB` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[deny(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing [INFO] [stdout] --> chalk-solve/src/logging_db.rs:151:21 [INFO] [stdout] | [INFO] [stdout] 151 | self.ws.db().borrow().generator_witness_datum(generator_id) [INFO] [stdout] | ^^^^^^^^^ unnecessary method call [INFO] [stdout] | [INFO] [stdout] = note: the type `DB` does not implement `Borrow`, so calling `borrow` on `&DB` copies the reference, which does not do anything and can be removed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&LoggingRustIrDatabase` instead of borrowing the inner type [INFO] [stdout] --> chalk-solve/src/logging_db.rs:376:16 [INFO] [stdout] | [INFO] [stdout] 376 | self.db [INFO] [stdout] | ________________^ [INFO] [stdout] 377 | | .borrow() [INFO] [stdout] | |_____________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&LoggingRustIrDatabase` instead of borrowing the inner type [INFO] [stdout] --> chalk-solve/src/logging_db.rs:383:16 [INFO] [stdout] | [INFO] [stdout] 383 | self.db.borrow().unification_database().adt_variance(adt_id) [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&LoggingRustIrDatabase` instead of borrowing the inner type [INFO] [stdout] --> chalk-solve/src/logging_db.rs:414:16 [INFO] [stdout] | [INFO] [stdout] 414 | self.db.borrow().generator_datum(generator_id) [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&LoggingRustIrDatabase` instead of borrowing the inner type [INFO] [stdout] --> chalk-solve/src/logging_db.rs:422:16 [INFO] [stdout] | [INFO] [stdout] 422 | self.db.borrow().generator_witness_datum(generator_id) [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `chalk-solve` (lib) due to 3 previous errors; 4 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "4272c2b7b62b568fbaa5a2a332231cf5386371f384c0abdd484eee2035dbbc9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4272c2b7b62b568fbaa5a2a332231cf5386371f384c0abdd484eee2035dbbc9c", kill_on_drop: false }` [INFO] [stdout] 4272c2b7b62b568fbaa5a2a332231cf5386371f384c0abdd484eee2035dbbc9c