[INFO] fetching crate auto-diff 0.5.9...
[INFO] checking auto-diff-0.5.9 against try#863511eff87e66198b396935f3b5c8a543022f53 for pr-139493-1
[INFO] extracting crate auto-diff 0.5.9 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate auto-diff 0.5.9
[INFO] finished tweaking crates.io crate auto-diff 0.5.9
[INFO] tweaked toml for crates.io crate auto-diff 0.5.9 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate auto-diff 0.5.9 on toolchain 863511eff87e66198b396935f3b5c8a543022f53
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+863511eff87e66198b396935f3b5c8a543022f53" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate auto-diff 0.5.9 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" "+863511eff87e66198b396935f3b5c8a543022f53" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+863511eff87e66198b396935f3b5c8a543022f53" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86cac42798815843f7cfdd57e01304317b9c4abb5b26a163a8cf11ddd31b3a4d
[INFO] running `Command { std: "docker" "start" "-a" "86cac42798815843f7cfdd57e01304317b9c4abb5b26a163a8cf11ddd31b3a4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86cac42798815843f7cfdd57e01304317b9c4abb5b26a163a8cf11ddd31b3a4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86cac42798815843f7cfdd57e01304317b9c4abb5b26a163a8cf11ddd31b3a4d", kill_on_drop: false }`
[INFO] [stdout] 86cac42798815843f7cfdd57e01304317b9c4abb5b26a163a8cf11ddd31b3a4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+863511eff87e66198b396935f3b5c8a543022f53" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab5c82496023db27246a81bf531e5df57205ecf05017bd9c088f8cfee02b5fd6
[INFO] running `Command { std: "docker" "start" "-a" "ab5c82496023db27246a81bf531e5df57205ecf05017bd9c088f8cfee02b5fd6", kill_on_drop: false }`
[INFO] [stderr] warning: auto-diff v0.5.9 (/opt/rustwide/workdir) ignoring invalid dependency `cargo-expand` which is missing a lib target
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling serde_json v1.0.79
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[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling protobuf v2.27.1
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[INFO] [stderr]     Checking crc32fast v1.3.2
[INFO] [stderr]     Checking miniz_oxide v0.3.7
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[INFO] [stderr]    Compiling rustc_version v0.4.0
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[INFO] [stderr]     Checking plotters-backend v0.3.2
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[INFO] [stderr]     Checking blas-sys v0.7.1
[INFO] [stderr]     Checking lapack-sys v0.14.0
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking gethostname v0.2.3
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking oorandom v11.1.3
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[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking blas v0.22.0
[INFO] [stderr]     Checking lapack v0.19.0
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking tensorboard-proto v0.5.7
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling auto-diff-macros v0.5.9
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling openblas-build v0.1.1
[INFO] [stderr]    Compiling openblas-src v0.10.4
[INFO] [stderr]     Checking tensorboard-rs v0.5.9
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking tensor-rs v0.5.9
[INFO] [stderr]     Checking serde-pickle v0.6.3
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking auto-diff v0.5.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/collection/generational_index.rs:131:21
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn iter_key(&self) -> GenIndexIter<T> {
[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] 131 |     pub fn iter_key(&self) -> GenIndexIter<'_, T> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/collection/generational_index.rs:142:27
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn new(index_ref: &GenIndex<T>) -> GenIndexIter<T> {
[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] 142 |     pub fn new(index_ref: &GenIndex<T>) -> GenIndexIter<'_, T> {
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/collection/directed_graph.rs:50:22
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn iter_data(&self) -> NodeIterator<TData> {
[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] 50 |     pub fn iter_data(&self) -> NodeIterator<'_, TData> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/collection/directed_graph.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn iter_op(&self) -> NodeIterator<TOp> {
[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] 56 |     pub fn iter_op(&self) -> NodeIterator<'_, TOp> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/collection/directed_graph.rs:65:32
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn iter_op_given_input(&self, var: &TData) -> Result<NodeIterator<TOp>, &str> {
[INFO] [stdout]    |                                ^^^^^                         ^^^^^^^^^^^^^^^^^  ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                                |                             |
[INFO] [stdout]    |                                |                             the same lifetime is hidden here
[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] 65 |     pub fn iter_op_given_input(&self, var: &TData) -> Result<NodeIterator<'_, TOp>, &str> {
[INFO] [stdout]    |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/collection/directed_graph.rs:78:33
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn iter_op_given_output(&self, var: &TData) -> Result<NodeIterator<TOp>, &str> {
[INFO] [stdout]    |                                 ^^^^^                         ^^^^^^^^^^^^^^^^^  ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                                 |                             |
[INFO] [stdout]    |                                 |                             the same lifetime is hidden here
[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] 78 |     pub fn iter_op_given_output(&self, var: &TData) -> Result<NodeIterator<'_, TOp>, &str> {
[INFO] [stdout]    |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/collection/directed_graph.rs:91:32
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn iter_input_given_op(&self, func: &TOp) -> Result<NodeIterator<TData>, &str> {
[INFO] [stdout]    |                                ^^^^^                        ^^^^^^^^^^^^^^^^^^^  ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                                |                            |
[INFO] [stdout]    |                                |                            the same lifetime is hidden here
[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] 91 |     pub fn iter_input_given_op(&self, func: &TOp) -> Result<NodeIterator<'_, TData>, &str> {
[INFO] [stdout]    |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/collection/directed_graph.rs:104:33
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn iter_output_given_op(&self, func: &TOp) -> Result<NodeIterator<TData>, &str> {
[INFO] [stdout]     |                                 ^^^^^                        ^^^^^^^^^^^^^^^^^^^  ^^^^ the same lifetime is elided here
[INFO] [stdout]     |                                 |                            |
[INFO] [stdout]     |                                 |                            the same lifetime is hidden here
[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] 104 |     pub fn iter_output_given_op(&self, func: &TOp) -> Result<NodeIterator<'_, TData>, &str> {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/collection/generational_index.rs:131:21
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn iter_key(&self) -> GenIndexIter<T> {
[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] 131 |     pub fn iter_key(&self) -> GenIndexIter<'_, T> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/collection/generational_index.rs:142:27
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn new(index_ref: &GenIndex<T>) -> GenIndexIter<T> {
[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] 142 |     pub fn new(index_ref: &GenIndex<T>) -> GenIndexIter<'_, T> {
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/collection/directed_graph.rs:50:22
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn iter_data(&self) -> NodeIterator<TData> {
[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] 50 |     pub fn iter_data(&self) -> NodeIterator<'_, TData> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/collection/directed_graph.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn iter_op(&self) -> NodeIterator<TOp> {
[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] 56 |     pub fn iter_op(&self) -> NodeIterator<'_, TOp> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/collection/directed_graph.rs:65:32
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn iter_op_given_input(&self, var: &TData) -> Result<NodeIterator<TOp>, &str> {
[INFO] [stdout]    |                                ^^^^^                         ^^^^^^^^^^^^^^^^^  ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                                |                             |
[INFO] [stdout]    |                                |                             the same lifetime is hidden here
[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] 65 |     pub fn iter_op_given_input(&self, var: &TData) -> Result<NodeIterator<'_, TOp>, &str> {
[INFO] [stdout]    |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/collection/directed_graph.rs:78:33
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn iter_op_given_output(&self, var: &TData) -> Result<NodeIterator<TOp>, &str> {
[INFO] [stdout]    |                                 ^^^^^                         ^^^^^^^^^^^^^^^^^  ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                                 |                             |
[INFO] [stdout]    |                                 |                             the same lifetime is hidden here
[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] 78 |     pub fn iter_op_given_output(&self, var: &TData) -> Result<NodeIterator<'_, TOp>, &str> {
[INFO] [stdout]    |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/collection/directed_graph.rs:91:32
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn iter_input_given_op(&self, func: &TOp) -> Result<NodeIterator<TData>, &str> {
[INFO] [stdout]    |                                ^^^^^                        ^^^^^^^^^^^^^^^^^^^  ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                                |                            |
[INFO] [stdout]    |                                |                            the same lifetime is hidden here
[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] 91 |     pub fn iter_input_given_op(&self, func: &TOp) -> Result<NodeIterator<'_, TData>, &str> {
[INFO] [stdout]    |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/collection/directed_graph.rs:104:33
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn iter_output_given_op(&self, func: &TOp) -> Result<NodeIterator<TData>, &str> {
[INFO] [stdout]     |                                 ^^^^^                        ^^^^^^^^^^^^^^^^^^^  ^^^^ the same lifetime is elided here
[INFO] [stdout]     |                                 |                            |
[INFO] [stdout]     |                                 |                            the same lifetime is hidden here
[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] 104 |     pub fn iter_output_given_op(&self, func: &TOp) -> Result<NodeIterator<'_, TData>, &str> {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5m 29s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5, lazy_static v1.4.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "ab5c82496023db27246a81bf531e5df57205ecf05017bd9c088f8cfee02b5fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab5c82496023db27246a81bf531e5df57205ecf05017bd9c088f8cfee02b5fd6", kill_on_drop: false }`
[INFO] [stdout] ab5c82496023db27246a81bf531e5df57205ecf05017bd9c088f8cfee02b5fd6
