[INFO] cloning repository https://github.com/shaddyshad/friendly
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shaddyshad/friendly" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshaddyshad%2Ffriendly"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshaddyshad%2Ffriendly'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b6129120ecd6e147a328c725b22b97a6ce4f06af
[INFO] checking shaddyshad/friendly against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshaddyshad%2Ffriendly" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shaddyshad/friendly on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/shaddyshad/friendly
[INFO] finished tweaking git repo https://github.com/shaddyshad/friendly
[INFO] tweaked toml for git repo https://github.com/shaddyshad/friendly written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/shaddyshad/friendly already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 75b30888c97846dd098dc36b63dfb2c1acb447eafa2e4ad63ac6c5b979cf491e
[INFO] running `"docker" "start" "-a" "75b30888c97846dd098dc36b63dfb2c1acb447eafa2e4ad63ac6c5b979cf491e"`
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking h2 v0.2.4
[INFO] [stderr]     Checking hyper v0.13.4
[INFO] [stderr]     Checking serde_json v1.0.50
[INFO] [stderr]     Checking interactive_paper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `Borrowed`, `self`
[INFO] [stderr]  --> src/question_paper/interface.rs:3:24
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::borrow::Cow::{self, Borrowed};
[INFO] [stderr]   |                        ^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/question_paper/mod.rs:5:34
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::borrow::Cow::{Borrowed, self};
[INFO] [stderr]   |                                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/question_paper/mod.rs:215:9
[INFO] [stderr]     |
[INFO] [stderr] 215 |           /// Mark the node as skipped
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 216 | /         match self.resolve_read_intent(read_intent){
[INFO] [stderr] 217 | |             Ok(node) => {
[INFO] [stderr] 218 | |                 let index = node.index;
[INFO] [stderr] 219 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 227 | |             Err(err) => WriteResult::Error(err)
[INFO] [stderr] 228 | |         }
[INFO] [stderr]     | |_________- rustdoc does not generate documentation for expressions
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]  --> src/intents/resolvers/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::Cow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Intent`
[INFO] [stderr]  --> src/intents/resolvers/http.rs:1:13
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::{Intent, Errors, IntentParser};
[INFO] [stderr]   |             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Borrowed`, `self`
[INFO] [stderr]  --> src/intents/resolvers/http.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::borrow::Cow::{self, Borrowed};
[INFO] [stderr]   |                        ^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `body::HttpBody as _`
[INFO] [stderr]  --> src/intents/resolvers/http.rs:3:13
[INFO] [stderr]   |
[INFO] [stderr] 3 | use hyper::{body::HttpBody as _, Client, Uri};
[INFO] [stderr]   |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]  --> src/intents/resolvers/intent_parser.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::borrow::Cow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]  --> src/intents/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::borrow::Cow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/question_paper/builder/mod.rs:66:17
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 _ => ()
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning[E0170]: pattern binding `StartTag` is named the same as one of the variants of the type `parser::interface::TagKind`
[INFO] [stderr]   --> src/question_paper/builder/mod.rs:94:23
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 kind: StartTag,
[INFO] [stderr]    |                       ^^^^^^^^ help: to match on the variant, qualify the path: `parser::interface::TagKind::StartTag`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bindings_with_variant_name)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/question_paper/builder/section_builder.rs:127:17
[INFO] [stderr]     |
[INFO] [stderr] 127 |                 _ => ()
[INFO] [stderr]     |                 ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]    --> src/parser/tokenizer/mod.rs:221:54
[INFO] [stderr]     |
[INFO] [stderr] 221 |     fn get_preprocessed_char(&mut self, mut c: char, input: &mut XmlContent) -> Option<char> {
[INFO] [stderr]     |                                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `StartTag`
[INFO] [stderr]   --> src/question_paper/builder/mod.rs:94:23
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 kind: StartTag,
[INFO] [stderr]    |                       ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_StartTag`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/question_paper/interface.rs:16:32
[INFO] [stderr]    |
[INFO] [stderr] 16 |             Self::Question(ref c) => true,
[INFO] [stderr]    |                                ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/question_paper/interface.rs:23:31
[INFO] [stderr]    |
[INFO] [stderr] 23 |             Self::Section(ref c) => true,
[INFO] [stderr]    |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser/tokenizer/mod.rs:221:41
[INFO] [stderr]     |
[INFO] [stderr] 221 |     fn get_preprocessed_char(&mut self, mut c: char, input: &mut XmlContent) -> Option<char> {
[INFO] [stderr]     |                                         ----^
[INFO] [stderr]     |                                         |
[INFO] [stderr]     |                                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Borrowed`, `self`
[INFO] [stderr]  --> src/question_paper/interface.rs:3:24
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::borrow::Cow::{self, Borrowed};
[INFO] [stderr]   |                        ^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/question_paper/mod.rs:5:34
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::borrow::Cow::{Borrowed, self};
[INFO] [stderr]   |                                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/question_paper/mod.rs:215:9
[INFO] [stderr]     |
[INFO] [stderr] 215 |           /// Mark the node as skipped
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 216 | /         match self.resolve_read_intent(read_intent){
[INFO] [stderr] 217 | |             Ok(node) => {
[INFO] [stderr] 218 | |                 let index = node.index;
[INFO] [stderr] 219 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 227 | |             Err(err) => WriteResult::Error(err)
[INFO] [stderr] 228 | |         }
[INFO] [stderr]     | |_________- rustdoc does not generate documentation for expressions
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]  --> src/intents/resolvers/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::Cow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Intent`
[INFO] [stderr]  --> src/intents/resolvers/http.rs:1:13
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::{Intent, Errors, IntentParser};
[INFO] [stderr]   |             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Borrowed`, `self`
[INFO] [stderr]  --> src/intents/resolvers/http.rs:2:24
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::borrow::Cow::{self, Borrowed};
[INFO] [stderr]   |                        ^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `body::HttpBody as _`
[INFO] [stderr]  --> src/intents/resolvers/http.rs:3:13
[INFO] [stderr]   |
[INFO] [stderr] 3 | use hyper::{body::HttpBody as _, Client, Uri};
[INFO] [stderr]   |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]  --> src/intents/resolvers/intent_parser.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::borrow::Cow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]  --> src/intents/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::borrow::Cow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `parser`
[INFO] [stderr]   --> src/intents/resolvers/http.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     parser: IntentParser
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `StartTag` should have a snake case name
[INFO] [stderr]   --> src/question_paper/builder/mod.rs:94:23
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 kind: StartTag,
[INFO] [stderr]    |                       ^^^^^^^^ help: convert the identifier to snake case: `start_tag`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `StartTag` should have a snake case name
[INFO] [stderr]   --> src/question_paper/builder/mod.rs:94:23
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 kind: StartTag,
[INFO] [stderr]    |                       ^^^^^^^^ help: convert the identifier to snake case: `start_tag`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/question_paper/builder/mod.rs:66:17
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 _ => ()
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning[E0170]: pattern binding `StartTag` is named the same as one of the variants of the type `parser::interface::TagKind`
[INFO] [stderr]   --> src/question_paper/builder/mod.rs:94:23
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 kind: StartTag,
[INFO] [stderr]    |                       ^^^^^^^^ help: to match on the variant, qualify the path: `parser::interface::TagKind::StartTag`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bindings_with_variant_name)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/question_paper/builder/section_builder.rs:127:17
[INFO] [stderr]     |
[INFO] [stderr] 127 |                 _ => ()
[INFO] [stderr]     |                 ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]    --> src/parser/tokenizer/mod.rs:221:54
[INFO] [stderr]     |
[INFO] [stderr] 221 |     fn get_preprocessed_char(&mut self, mut c: char, input: &mut XmlContent) -> Option<char> {
[INFO] [stderr]     |                                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `StartTag`
[INFO] [stderr]   --> src/question_paper/builder/mod.rs:94:23
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 kind: StartTag,
[INFO] [stderr]    |                       ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_StartTag`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/question_paper/interface.rs:16:32
[INFO] [stderr]    |
[INFO] [stderr] 16 |             Self::Question(ref c) => true,
[INFO] [stderr]    |                                ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/question_paper/interface.rs:23:31
[INFO] [stderr]    |
[INFO] [stderr] 23 |             Self::Section(ref c) => true,
[INFO] [stderr]    |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser/tokenizer/mod.rs:221:41
[INFO] [stderr]     |
[INFO] [stderr] 221 |     fn get_preprocessed_char(&mut self, mut c: char, input: &mut XmlContent) -> Option<char> {
[INFO] [stderr]     |                                         ----^
[INFO] [stderr]     |                                         |
[INFO] [stderr]     |                                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `parser`
[INFO] [stderr]   --> src/intents/resolvers/http.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     parser: IntentParser
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]   --> src/parser/tokenizer/small_charset.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     #[macro_use]
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `StartTag` should have a snake case name
[INFO] [stderr]   --> src/question_paper/builder/mod.rs:94:23
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 kind: StartTag,
[INFO] [stderr]    |                       ^^^^^^^^ help: convert the identifier to snake case: `start_tag`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `StartTag` should have a snake case name
[INFO] [stderr]   --> src/question_paper/builder/mod.rs:94:23
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 kind: StartTag,
[INFO] [stderr]    |                       ^^^^^^^^ help: convert the identifier to snake case: `start_tag`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `"docker" "inspect" "75b30888c97846dd098dc36b63dfb2c1acb447eafa2e4ad63ac6c5b979cf491e"`
[INFO] running `"docker" "rm" "-f" "75b30888c97846dd098dc36b63dfb2c1acb447eafa2e4ad63ac6c5b979cf491e"`
[INFO] [stdout] 75b30888c97846dd098dc36b63dfb2c1acb447eafa2e4ad63ac6c5b979cf491e