[INFO] fetching crate pretty_rdf 0.1.0...
[INFO] checking pretty_rdf-0.1.0 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate pretty_rdf 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate pretty_rdf 0.1.0 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pretty_rdf 0.1.0
[INFO] finished tweaking crates.io crate pretty_rdf 0.1.0
[INFO] tweaked toml for crates.io crate pretty_rdf 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17f30614cd9591853d09d96f521116d854b105afc08d67dbe6dd129fb37eda79
[INFO] running `Command { std: "docker" "start" "-a" "17f30614cd9591853d09d96f521116d854b105afc08d67dbe6dd129fb37eda79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17f30614cd9591853d09d96f521116d854b105afc08d67dbe6dd129fb37eda79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17f30614cd9591853d09d96f521116d854b105afc08d67dbe6dd129fb37eda79", kill_on_drop: false }`
[INFO] [stdout] 17f30614cd9591853d09d96f521116d854b105afc08d67dbe6dd129fb37eda79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 697320fd9207638d2e897ef5f2d8ebe4bc3e57c676d046ec6e40b535bd6260c4
[INFO] running `Command { std: "docker" "start" "-a" "697320fd9207638d2e897ef5f2d8ebe4bc3e57c676d046ec6e40b535bd6260c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking rio_api v0.5.3
[INFO] [stderr]     Checking oxilangtag v0.1.2
[INFO] [stderr]     Checking oxiri v0.1.1
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking rio_turtle v0.5.3
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking quick-xml v0.21.0
[INFO] [stderr]     Checking pretty_rdf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/lib.rs:785:9
[INFO] [stdout]     |
[INFO] [stdout] 785 | /         &self.v.make_contiguous()
[INFO] [stdout] 786 | |             .sort_by(
[INFO] [stdout] 787 | |                 |a, b| {
[INFO] [stdout] 788 | |                     match (a, b) {
[INFO] [stdout] ...   |
[INFO] [stdout] 821 | |                 }
[INFO] [stdout] 822 | |             );
[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] 785 |         let _ = &self.v.make_contiguous()
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/lib.rs:850:21
[INFO] [stdout]     |
[INFO] [stdout] 850 |                     &self.by_sub.insert(n.clone(), v.clone());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 850 |                     let _ = &self.by_sub.insert(n.clone(), v.clone());
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]     --> src/lib.rs:1280:9
[INFO] [stdout]      |
[INFO] [stdout] 1280 |         &self.1.push(triple);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1280 |         let _ = &self.1.push(triple);
[INFO] [stdout]      |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/lib.rs:785:9
[INFO] [stdout]     |
[INFO] [stdout] 785 | /         &self.v.make_contiguous()
[INFO] [stdout] 786 | |             .sort_by(
[INFO] [stdout] 787 | |                 |a, b| {
[INFO] [stdout] 788 | |                     match (a, b) {
[INFO] [stdout] ...   |
[INFO] [stdout] 821 | |                 }
[INFO] [stdout] 822 | |             );
[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] 785 |         let _ = &self.v.make_contiguous()
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/lib.rs:850:21
[INFO] [stdout]     |
[INFO] [stdout] 850 |                     &self.by_sub.insert(n.clone(), v.clone());
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 850 |                     let _ = &self.by_sub.insert(n.clone(), v.clone());
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]     --> src/lib.rs:1280:9
[INFO] [stdout]      |
[INFO] [stdout] 1280 |         &self.1.push(triple);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1280 |         let _ = &self.1.push(triple);
[INFO] [stdout]      |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `Command { std: "docker" "inspect" "697320fd9207638d2e897ef5f2d8ebe4bc3e57c676d046ec6e40b535bd6260c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "697320fd9207638d2e897ef5f2d8ebe4bc3e57c676d046ec6e40b535bd6260c4", kill_on_drop: false }`
[INFO] [stdout] 697320fd9207638d2e897ef5f2d8ebe4bc3e57c676d046ec6e40b535bd6260c4