[INFO] fetching crate yaml_lib 0.2.1...
[INFO] checking yaml_lib-0.2.1 against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] extracting crate yaml_lib 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate yaml_lib 0.2.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate yaml_lib 0.2.1
[INFO] tweaked toml for crates.io crate yaml_lib 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate yaml_lib 0.2.1 on toolchain 52995a223f2919dd3e2e427231db90a257350ded
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate yaml_lib 0.2.1 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" "+52995a223f2919dd3e2e427231db90a257350ded" "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-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:c0af3998e971868164375a7dfb646c9933ddd1a3bdb00fa2041266763dc1eeab" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f2001f106c5392691e29be523f5bb94f2f0dc44961ec0ad8651823cb0197555f
[INFO] running `Command { std: "docker" "start" "f2001f106c5392691e29be523f5bb94f2f0dc44961ec0ad8651823cb0197555f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2001f106c5392691e29be523f5bb94f2f0dc44961ec0ad8651823cb0197555f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f2001f106c5392691e29be523f5bb94f2f0dc44961ec0ad8651823cb0197555f" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2001f106c5392691e29be523f5bb94f2f0dc44961ec0ad8651823cb0197555f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f2001f106c5392691e29be523f5bb94f2f0dc44961ec0ad8651823cb0197555f" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.189
[INFO] [stderr]     Checking aho-corasick v1.1.5
[INFO] [stderr]     Checking regex-automata v0.4.18
[INFO] [stderr]     Checking getrandom v0.4.3
[INFO] [stderr]     Checking rand v0.10.2
[INFO] [stderr]     Checking regex v1.13.1
[INFO] [stderr]     Checking yaml_lib v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::io::traits::ISource`
[INFO] [stdout]   --> src/parser/document/mod.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     use crate::io::traits::ISource;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_none_node` is never used
[INFO] [stdout]   --> src/nodes/node_utils.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn is_none_node(node: &Node) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[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]    --> src/nodes/node.rs:976:21
[INFO] [stdout]     |
[INFO] [stdout] 976 |     pub fn children(&self) -> NodeChildIterator {
[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] 976 |     pub fn children(&self) -> NodeChildIterator<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils/streaming.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn iter_depth_first(&self) -> NodeIterator;
[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] 116 |     fn iter_depth_first(&self) -> NodeIterator<'_>;
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils/streaming.rs:119:27
[INFO] [stdout]     |
[INFO] [stdout] 119 |     fn iter_breadth_first(&self) -> NodeIterator;
[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] 119 |     fn iter_breadth_first(&self) -> NodeIterator<'_>;
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils/streaming.rs:142:25
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn iter_depth_first(&self) -> NodeIterator {
[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 |     fn iter_depth_first(&self) -> NodeIterator<'_> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils/streaming.rs:146:27
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn iter_breadth_first(&self) -> NodeIterator {
[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] 146 |     fn iter_breadth_first(&self) -> NodeIterator<'_> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `validation::error::ValidationError`
[INFO] [stdout]    --> src/validation/validators.rs:579:21
[INFO] [stdout]     |
[INFO] [stdout] 579 |                 Err(ValidationError::Custom("Number must be positive".to_string()).into())
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 579 -                 Err(ValidationError::Custom("Number must be positive".to_string()).into())
[INFO] [stdout] 579 +                 Err(ValidationError::Custom("Number must be positive".to_string()))
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 579 -                 Err(ValidationError::Custom("Number must be positive".to_string()).into())
[INFO] [stdout] 579 +                 Err(<validation::error::ValidationError as Into<_>>::into(ValidationError::Custom("Number must be positive".to_string())))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `validation::error::ValidationError`
[INFO] [stdout]    --> src/validation/validators.rs:581:22
[INFO] [stdout]     |
[INFO] [stdout] 581 |             _ => Err(ValidationError::Custom("Not a number".to_string()).into()),
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 581 -             _ => Err(ValidationError::Custom("Not a number".to_string()).into()),
[INFO] [stdout] 581 +             _ => Err(ValidationError::Custom("Not a number".to_string())),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 581 -             _ => Err(ValidationError::Custom("Not a number".to_string()).into()),
[INFO] [stdout] 581 +             _ => Err(<validation::error::ValidationError as Into<_>>::into(ValidationError::Custom("Not a number".to_string()))),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/nodes/node.rs:976:21
[INFO] [stdout]     |
[INFO] [stdout] 976 |     pub fn children(&self) -> NodeChildIterator {
[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] 976 |     pub fn children(&self) -> NodeChildIterator<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils/streaming.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn iter_depth_first(&self) -> NodeIterator;
[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] 116 |     fn iter_depth_first(&self) -> NodeIterator<'_>;
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils/streaming.rs:119:27
[INFO] [stdout]     |
[INFO] [stdout] 119 |     fn iter_breadth_first(&self) -> NodeIterator;
[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] 119 |     fn iter_breadth_first(&self) -> NodeIterator<'_>;
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils/streaming.rs:142:25
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn iter_depth_first(&self) -> NodeIterator {
[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 |     fn iter_depth_first(&self) -> NodeIterator<'_> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/utils/streaming.rs:146:27
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn iter_breadth_first(&self) -> NodeIterator {
[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] 146 |     fn iter_breadth_first(&self) -> NodeIterator<'_> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yaml_lib` (lib test) due to 2 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f2001f106c5392691e29be523f5bb94f2f0dc44961ec0ad8651823cb0197555f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2001f106c5392691e29be523f5bb94f2f0dc44961ec0ad8651823cb0197555f", kill_on_drop: false }`
[INFO] [stdout] f2001f106c5392691e29be523f5bb94f2f0dc44961ec0ad8651823cb0197555f
