[INFO] fetching crate pattern-compiler 0.1.0...
[INFO] checking pattern-compiler-0.1.0 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate pattern-compiler 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate pattern-compiler 0.1.0 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pattern-compiler 0.1.0
[INFO] finished tweaking crates.io crate pattern-compiler 0.1.0
[INFO] tweaked toml for crates.io crate pattern-compiler 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 74eebc246565cc493ed6c78beb99107c271151f49a0ded950980a73a71a8a92a
[INFO] running `Command { std: "docker" "start" "-a" "74eebc246565cc493ed6c78beb99107c271151f49a0ded950980a73a71a8a92a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74eebc246565cc493ed6c78beb99107c271151f49a0ded950980a73a71a8a92a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74eebc246565cc493ed6c78beb99107c271151f49a0ded950980a73a71a8a92a", kill_on_drop: false }`
[INFO] [stdout] 74eebc246565cc493ed6c78beb99107c271151f49a0ded950980a73a71a8a92a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 849817d3a512d47e8a2a92dc5b3f20ac625766abaf292299e0b08b21d48594a5
[INFO] running `Command { std: "docker" "start" "-a" "849817d3a512d47e8a2a92dc5b3f20ac625766abaf292299e0b08b21d48594a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]    Compiling derivative v1.0.4
[INFO] [stderr]     Checking pattern-compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cfg/generate_dot.rs:17:34
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn to_dot(&self, w: &mut Write) -> ::std::io::Result<()> {
[INFO] [stdout]    |                                  ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/matrix.rs:29:29
[INFO] [stdout]    |
[INFO] [stdout] 29 |                      -> Box<Iterator<Item = &'a [T]> + 'a> {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = &'a [T]> + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix.rs:187:49
[INFO] [stdout]     |
[INFO] [stdout] 187 |     pub fn iterate_clauses<'a>(&'a self) -> Box<Iterator<Item = (NodeIndex, &'a [MatchMatrixElement<P>])> + 'a> {
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (NodeIndex, &'a [MatchMatrixElement<P>])> + 'a`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cfg/generate_dot.rs:17:34
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn to_dot(&self, w: &mut Write) -> ::std::io::Result<()> {
[INFO] [stdout]    |                                  ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/matrix.rs:29:29
[INFO] [stdout]    |
[INFO] [stdout] 29 |                      -> Box<Iterator<Item = &'a [T]> + 'a> {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = &'a [T]> + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix.rs:187:49
[INFO] [stdout]     |
[INFO] [stdout] 187 |     pub fn iterate_clauses<'a>(&'a self) -> Box<Iterator<Item = (NodeIndex, &'a [MatchMatrixElement<P>])> + 'a> {
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (NodeIndex, &'a [MatchMatrixElement<P>])> + 'a`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ExpandedClauseNodes`, `PatternProvider`
[INFO] [stdout]  --> src/simple_pattern/test.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ::{ PatternProvider, ExpandedClauseNodes };
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Direction`, `Graph`
[INFO] [stdout]  --> src/simple_pattern/test.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use ::petgraph::{ Graph, Direction };
[INFO] [stdout]   |                   ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::petgraph::graph::NodeIndex`
[INFO] [stdout]  --> src/simple_pattern/test.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ::petgraph::graph::NodeIndex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.55s
[INFO] running `Command { std: "docker" "inspect" "849817d3a512d47e8a2a92dc5b3f20ac625766abaf292299e0b08b21d48594a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "849817d3a512d47e8a2a92dc5b3f20ac625766abaf292299e0b08b21d48594a5", kill_on_drop: false }`
[INFO] [stdout] 849817d3a512d47e8a2a92dc5b3f20ac625766abaf292299e0b08b21d48594a5