[INFO] fetching crate twiggy-ir 0.8.0...
[INFO] testing twiggy-ir-0.8.0 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate twiggy-ir 0.8.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate twiggy-ir 0.8.0
[INFO] finished tweaking crates.io crate twiggy-ir 0.8.0
[INFO] tweaked toml for crates.io crate twiggy-ir 0.8.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate twiggy-ir 0.8.0 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate twiggy-ir 0.8.0 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.18
[INFO] [stderr]   Downloaded serde_derive v1.0.219
[INFO] [stderr]   Downloaded proc-macro2 v1.0.94
[INFO] [stderr]   Downloaded fixedbitset v0.4.1
[INFO] [stderr]   Downloaded quote v1.0.40
[INFO] [stderr]   Downloaded rustc-demangle v0.1.21
[INFO] [stderr]   Downloaded frozen v1.0.0
[INFO] [stderr]   Downloaded indexmap v1.8.2
[INFO] [stderr]   Downloaded serde v1.0.219
[INFO] [stderr]   Downloaded hashbrown v0.11.2
[INFO] [stderr]   Downloaded cpp_demangle v0.3.5
[INFO] [stderr]   Downloaded petgraph v0.6.2
[INFO] [stderr]   Downloaded syn v2.0.101
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e4a9764e29e118f76ccf7561c237d0f94380ed914a754096a74b54a17505e10
[INFO] running `Command { std: "docker" "start" "-a" "0e4a9764e29e118f76ccf7561c237d0f94380ed914a754096a74b54a17505e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e4a9764e29e118f76ccf7561c237d0f94380ed914a754096a74b54a17505e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e4a9764e29e118f76ccf7561c237d0f94380ed914a754096a74b54a17505e10", kill_on_drop: false }`
[INFO] [stdout] 0e4a9764e29e118f76ccf7561c237d0f94380ed914a754096a74b54a17505e10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e171a67831e20046d75133949499987acf16df0ae7cb7a084604afb2c73aee7
[INFO] running `Command { std: "docker" "start" "-a" "9e171a67831e20046d75133949499987acf16df0ae7cb7a084604afb2c73aee7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cpp_demangle v0.3.5
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling fixedbitset v0.4.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling frozen v1.0.0
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling petgraph v0.6.2
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling twiggy-ir v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `roots` is never read
[INFO] [stdout]    --> ir.rs:148:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub struct Items {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 148 |     roots: Frozen<BTreeSet<Id>>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Items` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |     pub fn iter(&self) -> Iter {
[INFO] [stdout]     |                 ^^^^^     ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 162 |     pub fn iter(&self) -> Iter<'_> {
[INFO] [stdout]     |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir.rs:169:22
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn neighbors(&self, id: Id) -> Neighbors {
[INFO] [stdout]     |                      ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn neighbors(&self, id: Id) -> Neighbors<'_> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir.rs:179:25
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn predecessors(&self, id: Id) -> Predecessors {
[INFO] [stdout]     |                         ^^^^^             ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn predecessors(&self, id: Id) -> Predecessors<'_> {
[INFO] [stdout]     |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.07s
[INFO] running `Command { std: "docker" "inspect" "9e171a67831e20046d75133949499987acf16df0ae7cb7a084604afb2c73aee7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e171a67831e20046d75133949499987acf16df0ae7cb7a084604afb2c73aee7", kill_on_drop: false }`
[INFO] [stdout] 9e171a67831e20046d75133949499987acf16df0ae7cb7a084604afb2c73aee7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a7fe60993b05132164d0d68591b468fe689e922ac0ac5f0aebddd1fa707fd2c
[INFO] running `Command { std: "docker" "start" "-a" "2a7fe60993b05132164d0d68591b468fe689e922ac0ac5f0aebddd1fa707fd2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling twiggy-ir v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `roots` is never read
[INFO] [stdout]    --> ir.rs:148:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub struct Items {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 148 |     roots: Frozen<BTreeSet<Id>>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Items` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |     pub fn iter(&self) -> Iter {
[INFO] [stdout]     |                 ^^^^^     ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 162 |     pub fn iter(&self) -> Iter<'_> {
[INFO] [stdout]     |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir.rs:169:22
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn neighbors(&self, id: Id) -> Neighbors {
[INFO] [stdout]     |                      ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn neighbors(&self, id: Id) -> Neighbors<'_> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir.rs:179:25
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn predecessors(&self, id: Id) -> Predecessors {
[INFO] [stdout]     |                         ^^^^^             ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn predecessors(&self, id: Id) -> Predecessors<'_> {
[INFO] [stdout]     |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `roots` is never read
[INFO] [stdout]    --> ir.rs:148:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub struct Items {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 148 |     roots: Frozen<BTreeSet<Id>>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Items` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |     pub fn iter(&self) -> Iter {
[INFO] [stdout]     |                 ^^^^^     ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 162 |     pub fn iter(&self) -> Iter<'_> {
[INFO] [stdout]     |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir.rs:169:22
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn neighbors(&self, id: Id) -> Neighbors {
[INFO] [stdout]     |                      ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn neighbors(&self, id: Id) -> Neighbors<'_> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir.rs:179:25
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn predecessors(&self, id: Id) -> Predecessors {
[INFO] [stdout]     |                         ^^^^^             ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn predecessors(&self, id: Id) -> Predecessors<'_> {
[INFO] [stdout]     |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "2a7fe60993b05132164d0d68591b468fe689e922ac0ac5f0aebddd1fa707fd2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a7fe60993b05132164d0d68591b468fe689e922ac0ac5f0aebddd1fa707fd2c", kill_on_drop: false }`
[INFO] [stdout] 2a7fe60993b05132164d0d68591b468fe689e922ac0ac5f0aebddd1fa707fd2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7f1bb1a2ad508d9168d15a76b66afc4bc43ac2739edeae23fc026dacdfa89c8c
[INFO] running `Command { std: "docker" "start" "-a" "7f1bb1a2ad508d9168d15a76b66afc4bc43ac2739edeae23fc026dacdfa89c8c", kill_on_drop: false }`
[INFO] [stderr] warning: field `roots` is never read
[INFO] [stderr]    --> ir.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 140 | pub struct Items {
[INFO] [stderr]     |            ----- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 148 |     roots: Frozen<BTreeSet<Id>>,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Items` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> ir.rs:162:17
[INFO] [stderr]     |
[INFO] [stderr] 162 |     pub fn iter(&self) -> Iter {
[INFO] [stderr]     |                 ^^^^^     ^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 162 |     pub fn iter(&self) -> Iter<'_> {
[INFO] [stderr]     |                               ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> ir.rs:169:22
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn neighbors(&self, id: Id) -> Neighbors {
[INFO] [stderr]     |                      ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                      |
[INFO] [stderr]     |                      the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn neighbors(&self, id: Id) -> Neighbors<'_> {
[INFO] [stderr]     |                                                 ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> ir.rs:179:25
[INFO] [stderr]     |
[INFO] [stderr] 179 |     pub fn predecessors(&self, id: Id) -> Predecessors {
[INFO] [stderr]     |                         ^^^^^             ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 179 |     pub fn predecessors(&self, id: Id) -> Predecessors<'_> {
[INFO] [stderr]     |                                                       ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `twiggy-ir` (lib) generated 4 warnings (run `cargo fix --lib -p twiggy-ir` to apply 3 suggestions)
[INFO] [stderr] warning: `twiggy-ir` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests ir.rs (/opt/rustwide/target/debug/deps/twiggy_ir-5bff18e77d4f389d)
[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] [stderr]    Doc-tests twiggy_ir
[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" "7f1bb1a2ad508d9168d15a76b66afc4bc43ac2739edeae23fc026dacdfa89c8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f1bb1a2ad508d9168d15a76b66afc4bc43ac2739edeae23fc026dacdfa89c8c", kill_on_drop: false }`
[INFO] [stdout] 7f1bb1a2ad508d9168d15a76b66afc4bc43ac2739edeae23fc026dacdfa89c8c
