[INFO] fetching crate fuzzy-tree 0.1.2... [INFO] building fuzzy-tree-0.1.2 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] extracting crate fuzzy-tree 0.1.2 into /workspace/builds/worker-3-tc1/source [INFO] validating manifest of crates.io crate fuzzy-tree 0.1.2 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate fuzzy-tree 0.1.2 [INFO] finished tweaking crates.io crate fuzzy-tree 0.1.2 [INFO] tweaked toml for crates.io crate fuzzy-tree 0.1.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate crates.io crate fuzzy-tree 0.1.2 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded regex v1.3.6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] dca6c8c2bd9a5370eed07ef132bf1d617340567857e71b3a162d57348298df4e [INFO] running `Command { std: "docker" "start" "-a" "dca6c8c2bd9a5370eed07ef132bf1d617340567857e71b3a162d57348298df4e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dca6c8c2bd9a5370eed07ef132bf1d617340567857e71b3a162d57348298df4e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dca6c8c2bd9a5370eed07ef132bf1d617340567857e71b3a162d57348298df4e", kill_on_drop: false }` [INFO] [stdout] dca6c8c2bd9a5370eed07ef132bf1d617340567857e71b3a162d57348298df4e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f3797869eb033dead28ad1bda86f7d37e0a26e3228106eefdfd4167314b96e66 [INFO] running `Command { std: "docker" "start" "-a" "f3797869eb033dead28ad1bda86f7d37e0a26e3228106eefdfd4167314b96e66", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.68 [INFO] [stderr] Compiling cc v1.0.52 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling rustc-demangle v0.1.16 [INFO] [stderr] Compiling unicode-width v0.1.7 [INFO] [stderr] Compiling regex-syntax v0.6.17 [INFO] [stderr] Compiling quick-error v1.2.3 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling vec_map v0.8.1 [INFO] [stderr] Compiling numtoa v0.1.0 [INFO] [stderr] Compiling termcolor v1.1.0 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling thread_local v1.0.1 [INFO] [stderr] Compiling humantime v1.3.0 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling aho-corasick v0.7.10 [INFO] [stderr] Compiling backtrace-sys v0.1.36 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling termion v1.5.5 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling backtrace v0.3.46 [INFO] [stderr] Compiling failure v0.1.7 [INFO] [stderr] Compiling which v3.1.1 [INFO] [stderr] Compiling regex v1.3.6 [INFO] [stderr] Compiling env_logger v0.7.1 [INFO] [stderr] Compiling fuzzy-tree v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: methods `add_parent` and `n_children` are never used [INFO] [stdout] --> src/path.rs:92:5 [INFO] [stdout] | [INFO] [stdout] 89 | pub trait PathBehaviour { [INFO] [stdout] | ------------- methods in this trait [INFO] [stdout] ... [INFO] [stdout] 92 | fn add_parent(&self, parent: &RcPath); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 96 | fn n_children(&self) -> usize; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.16s [INFO] running `Command { std: "docker" "inspect" "f3797869eb033dead28ad1bda86f7d37e0a26e3228106eefdfd4167314b96e66", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f3797869eb033dead28ad1bda86f7d37e0a26e3228106eefdfd4167314b96e66", kill_on_drop: false }` [INFO] [stdout] f3797869eb033dead28ad1bda86f7d37e0a26e3228106eefdfd4167314b96e66 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2ea5c79c80d7f1fac124159a127919b03920af21dcaea88de95ae93f5edb9708 [INFO] running `Command { std: "docker" "start" "-a" "2ea5c79c80d7f1fac124159a127919b03920af21dcaea88de95ae93f5edb9708", kill_on_drop: false }` [INFO] [stderr] Compiling fuzzy-tree v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/tree.rs:525:7 [INFO] [stdout] | [INFO] [stdout] 525 | let mut paths = create_test_paths(); [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: methods `add_parent` and `n_children` are never used [INFO] [stdout] --> src/path.rs:92:5 [INFO] [stdout] | [INFO] [stdout] 89 | pub trait PathBehaviour { [INFO] [stdout] | ------------- methods in this trait [INFO] [stdout] ... [INFO] [stdout] 92 | fn add_parent(&self, parent: &RcPath); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 96 | fn n_children(&self) -> usize; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/tree.rs:481:3 [INFO] [stdout] | [INFO] [stdout] 481 | &paths[3].add_child(&paths[4]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 481 | let _ = &paths[3].add_child(&paths[4]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/tree.rs:482:3 [INFO] [stdout] | [INFO] [stdout] 482 | &paths[4].add_child(&paths[5]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 482 | let _ = &paths[4].add_child(&paths[5]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/tree.rs:483:3 [INFO] [stdout] | [INFO] [stdout] 483 | &paths[4].add_child(&paths[6]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 483 | let _ = &paths[4].add_child(&paths[6]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/tree.rs:484:3 [INFO] [stdout] | [INFO] [stdout] 484 | &paths[3].add_child(&paths[7]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 484 | let _ = &paths[3].add_child(&paths[7]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/tree.rs:485:3 [INFO] [stdout] | [INFO] [stdout] 485 | &paths[7].add_child(&paths[8]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 485 | let _ = &paths[7].add_child(&paths[8]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/tree.rs:486:3 [INFO] [stdout] | [INFO] [stdout] 486 | &paths[7].add_child(&paths[9]); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 486 | let _ = &paths[7].add_child(&paths[9]); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.45s [INFO] running `Command { std: "docker" "inspect" "2ea5c79c80d7f1fac124159a127919b03920af21dcaea88de95ae93f5edb9708", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2ea5c79c80d7f1fac124159a127919b03920af21dcaea88de95ae93f5edb9708", kill_on_drop: false }` [INFO] [stdout] 2ea5c79c80d7f1fac124159a127919b03920af21dcaea88de95ae93f5edb9708