[INFO] fetching crate diet-xml 0.2.2...
[INFO] checking diet-xml-0.2.2 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate diet-xml 0.2.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate diet-xml 0.2.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate diet-xml 0.2.2
[INFO] tweaked toml for crates.io crate diet-xml 0.2.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate diet-xml 0.2.2 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate diet-xml 0.2.2 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35a307687eaf42449b148482e636d3310b613d74af12db0c75a2392602ab6f40
[INFO] running `Command { std: "docker" "start" "-a" "35a307687eaf42449b148482e636d3310b613d74af12db0c75a2392602ab6f40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35a307687eaf42449b148482e636d3310b613d74af12db0c75a2392602ab6f40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35a307687eaf42449b148482e636d3310b613d74af12db0c75a2392602ab6f40", kill_on_drop: false }`
[INFO] [stdout] 35a307687eaf42449b148482e636d3310b613d74af12db0c75a2392602ab6f40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31dbbaf201c1626c78fef914c1a1ac0c3d88a2f6e33b26ca9e6668007782ccd9
[INFO] running `Command { std: "docker" "start" "-a" "31dbbaf201c1626c78fef914c1a1ac0c3d88a2f6e33b26ca9e6668007782ccd9", kill_on_drop: false }`
[INFO] [stderr]     Checking diet-xml v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/schema.rs:108:71
[INFO] [stdout]     |
[INFO] [stdout] 108 | ...me((format!("Duplicate element: {} - to use duplicate element names\n apply !uniquesuffix to element in schemea eg <element></element><element!2></element!2>\n the suffix will not appear in final output\n but suffix should be used in all method calls eg add_element(\"element!2\",\"value\"))", self.buffer)))) }
[INFO] [stdout]     |       ^                                                                                                                                                                                                                                                                                                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 108 -             true => { return Err(XmlSchemaError::DuplicateElementName((format!("Duplicate element: {} - to use duplicate element names\n apply !uniquesuffix to element in schemea eg <element></element><element!2></element!2>\n the suffix will not appear in final output\n but suffix should be used in all method calls eg add_element(\"element!2\",\"value\"))", self.buffer)))) }
[INFO] [stdout] 108 +             true => { return Err(XmlSchemaError::DuplicateElementName(format!("Duplicate element: {} - to use duplicate element names\n apply !uniquesuffix to element in schemea eg <element></element><element!2></element!2>\n the suffix will not appear in final output\n but suffix should be used in all method calls eg add_element(\"element!2\",\"value\"))", self.buffer))) }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/schema.rs:108:71
[INFO] [stdout]     |
[INFO] [stdout] 108 | ...me((format!("Duplicate element: {} - to use duplicate element names\n apply !uniquesuffix to element in schemea eg <element></element><element!2></element!2>\n the suffix will not appear in final output\n but suffix should be used in all method calls eg add_element(\"element!2\",\"value\"))", self.buffer)))) }
[INFO] [stdout]     |       ^                                                                                                                                                                                                                                                                                                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 108 -             true => { return Err(XmlSchemaError::DuplicateElementName((format!("Duplicate element: {} - to use duplicate element names\n apply !uniquesuffix to element in schemea eg <element></element><element!2></element!2>\n the suffix will not appear in final output\n but suffix should be used in all method calls eg add_element(\"element!2\",\"value\"))", self.buffer)))) }
[INFO] [stdout] 108 +             true => { return Err(XmlSchemaError::DuplicateElementName(format!("Duplicate element: {} - to use duplicate element names\n apply !uniquesuffix to element in schemea eg <element></element><element!2></element!2>\n the suffix will not appear in final output\n but suffix should be used in all method calls eg add_element(\"element!2\",\"value\"))", self.buffer))) }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/lib.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn attributes(&mut self, attributes: &[(&str, &str)]) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 165 |
[INFO] [stdout] 166 |         self.attributes(attributes);   
[INFO] [stdout]     |         --------------------------- recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `attributes` is never used
[INFO] [stdout]   --> src/builder.rs:42:19
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl<'a> ChainFromAdd<'a> {
[INFO] [stdout]    | ------------------------- method in this implementation
[INFO] [stdout] 42 |     pub(crate) fn attributes(self, attributes: &[(&str, &str)]) {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:141:33
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub fn set_key<K: ToString>(&mut self, nm_element: &str, txt_key: K) -> ChainFromAdd {
[INFO] [stdout]     |                                 ^^^^^^^^^ the lifetime is elided here       ------------ the same lifetime is hidden 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] 141 |     pub fn set_key<K: ToString>(&mut self, nm_element: &str, txt_key: K) -> ChainFromAdd<'_> {
[INFO] [stdout]     |                                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn add_element<V: ToString>(&mut self, nm_element: &str, value_element: V) -> ChainFromAdd {
[INFO] [stdout]     |                                     ^^^^^^^^^ the lifetime is elided here             ------------ the same lifetime is hidden 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] 150 |     pub fn add_element<V: ToString>(&mut self, nm_element: &str, value_element: V) -> ChainFromAdd<'_> {
[INFO] [stdout]     |                                                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/builder.rs:149:27
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub(crate) fn set_key(&mut self, nm_element: &str, txt_key: &str) -> ChainFromAdd {
[INFO] [stdout]     |                           ^^^^^^^^^ the lifetime is elided here          ------------ the same lifetime is hidden 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] 149 |     pub(crate) fn set_key(&mut self, nm_element: &str, txt_key: &str) -> ChainFromAdd<'_> {
[INFO] [stdout]     |                                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/builder.rs:173:31
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub(crate) fn add_element(&mut self, nm_element: &str, value_element: &str) -> ChainFromAdd {
[INFO] [stdout]     |                               ^^^^^^^^^ the lifetime is elided here                ------------ the same lifetime is hidden 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] 173 |     pub(crate) fn add_element(&mut self, nm_element: &str, value_element: &str) -> ChainFromAdd<'_> {
[INFO] [stdout]     |                                                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/lib.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn attributes(&mut self, attributes: &[(&str, &str)]) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 165 |
[INFO] [stdout] 166 |         self.attributes(attributes);   
[INFO] [stdout]     |         --------------------------- recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `attributes` is never used
[INFO] [stdout]   --> src/builder.rs:42:19
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl<'a> ChainFromAdd<'a> {
[INFO] [stdout]    | ------------------------- method in this implementation
[INFO] [stdout] 42 |     pub(crate) fn attributes(self, attributes: &[(&str, &str)]) {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:141:33
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub fn set_key<K: ToString>(&mut self, nm_element: &str, txt_key: K) -> ChainFromAdd {
[INFO] [stdout]     |                                 ^^^^^^^^^ the lifetime is elided here       ------------ the same lifetime is hidden 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] 141 |     pub fn set_key<K: ToString>(&mut self, nm_element: &str, txt_key: K) -> ChainFromAdd<'_> {
[INFO] [stdout]     |                                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn add_element<V: ToString>(&mut self, nm_element: &str, value_element: V) -> ChainFromAdd {
[INFO] [stdout]     |                                     ^^^^^^^^^ the lifetime is elided here             ------------ the same lifetime is hidden 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] 150 |     pub fn add_element<V: ToString>(&mut self, nm_element: &str, value_element: V) -> ChainFromAdd<'_> {
[INFO] [stdout]     |                                                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/builder.rs:149:27
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub(crate) fn set_key(&mut self, nm_element: &str, txt_key: &str) -> ChainFromAdd {
[INFO] [stdout]     |                           ^^^^^^^^^ the lifetime is elided here          ------------ the same lifetime is hidden 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] 149 |     pub(crate) fn set_key(&mut self, nm_element: &str, txt_key: &str) -> ChainFromAdd<'_> {
[INFO] [stdout]     |                                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/builder.rs:173:31
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub(crate) fn add_element(&mut self, nm_element: &str, value_element: &str) -> ChainFromAdd {
[INFO] [stdout]     |                               ^^^^^^^^^ the lifetime is elided here                ------------ the same lifetime is hidden 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] 173 |     pub(crate) fn add_element(&mut self, nm_element: &str, value_element: &str) -> ChainFromAdd<'_> {
[INFO] [stdout]     |                                                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "31dbbaf201c1626c78fef914c1a1ac0c3d88a2f6e33b26ca9e6668007782ccd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31dbbaf201c1626c78fef914c1a1ac0c3d88a2f6e33b26ca9e6668007782ccd9", kill_on_drop: false }`
[INFO] [stdout] 31dbbaf201c1626c78fef914c1a1ac0c3d88a2f6e33b26ca9e6668007782ccd9