[INFO] updating cached repository https://github.com/AlmightyFloppyFish/leaf
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1df89a6d9de84817722c1f0f548cd594a9e9191f
[INFO] checking AlmightyFloppyFish/leaf against master#4007d4ef26eab44bdabc2b7574d032152264d3ad for pr-66919
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlmightyFloppyFish%2Fleaf" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlmightyFloppyFish/leaf on toolchain 4007d4ef26eab44bdabc2b7574d032152264d3ad
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/AlmightyFloppyFish/leaf
[INFO] finished tweaking git repo https://github.com/AlmightyFloppyFish/leaf
[INFO] tweaked toml for git repo https://github.com/AlmightyFloppyFish/leaf written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/AlmightyFloppyFish/leaf already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "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] e6a021d5691993c30789bcfa5fc6b62c5c12b8d288c1cc2f0c0bfada9c67dbe9
[INFO] running `"docker" "start" "-a" "e6a021d5691993c30789bcfa5fc6b62c5c12b8d288c1cc2f0c0bfada9c67dbe9"`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking termion v1.5.3
[INFO] [stderr]     Checking leaf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/parser/body/match.rs:1:25
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::{BodySource, Token};
[INFO] [stderr]   |                         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/parser/body/match.rs:1:25
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::{BodySource, Token};
[INFO] [stderr]   |                         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BodySource`, `Key`, `ParseError`, `Tokenizer`
[INFO] [stderr]  --> src/parser/annotation.rs:1:13
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::{BodySource, Key, ParseError, ParseFault, RawToken, Token, Tokenizer, Type};
[INFO] [stderr]   |             ^^^^^^^^^^  ^^^  ^^^^^^^^^^                               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BodySource`, `Key`, `ParseError`, `Tokenizer`
[INFO] [stderr]  --> src/parser/annotation.rs:1:13
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::{BodySource, Key, ParseError, ParseFault, RawToken, Token, Tokenizer, Type};
[INFO] [stderr]   |             ^^^^^^^^^^  ^^^  ^^^^^^^^^^                               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `anot`
[INFO] [stderr]    --> src/parser.rs:174:63
[INFO] [stderr]     |
[INFO] [stderr] 174 | ...                   Some(RawToken::Identifier(single, anot)) => single,
[INFO] [stderr]     |                                                         ^^^^ help: consider prefixing with an underscore: `_anot`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `anot`
[INFO] [stderr]    --> src/parser.rs:174:63
[INFO] [stderr]     |
[INFO] [stderr] 174 | ...                   Some(RawToken::Identifier(single, anot)) => single,
[INFO] [stderr]     |                                                         ^^^^ help: consider prefixing with an underscore: `_anot`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `anot`
[INFO] [stderr]   --> src/parser/type.rs:44:40
[INFO] [stderr]    |
[INFO] [stderr] 44 |         RawToken::Identifier(mut name, anot) => {
[INFO] [stderr]    |                                        ^^^^ help: consider prefixing with an underscore: `_anot`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `anot`
[INFO] [stderr]   --> src/parser/type.rs:62:50
[INFO] [stderr]    |
[INFO] [stderr] 62 |             RawToken::Identifier(mut field_name, anot) => {
[INFO] [stderr]    |                                                  ^^^^ help: consider prefixing with an underscore: `_anot`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `anot`
[INFO] [stderr]   --> src/parser/type.rs:77:45
[INFO] [stderr]    |
[INFO] [stderr] 77 |             RawToken::Identifier(type_name, anot) => {
[INFO] [stderr]    |                                             ^^^^ help: consider prefixing with an underscore: `_anot`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `anot`
[INFO] [stderr]   --> src/parser/type.rs:44:40
[INFO] [stderr]    |
[INFO] [stderr] 44 |         RawToken::Identifier(mut name, anot) => {
[INFO] [stderr]    |                                        ^^^^ help: consider prefixing with an underscore: `_anot`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `anot`
[INFO] [stderr]   --> src/parser/type.rs:62:50
[INFO] [stderr]    |
[INFO] [stderr] 62 |             RawToken::Identifier(mut field_name, anot) => {
[INFO] [stderr]    |                                                  ^^^^ help: consider prefixing with an underscore: `_anot`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `anot`
[INFO] [stderr]   --> src/parser/type.rs:77:45
[INFO] [stderr]    |
[INFO] [stderr] 77 |             RawToken::Identifier(type_name, anot) => {
[INFO] [stderr]    |                                             ^^^^ help: consider prefixing with an underscore: `_anot`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/parser/irbuilder/checker.rs:67:37
[INFO] [stderr]    |
[INFO] [stderr] 67 |             RawToken::ByPointer(box t) => {
[INFO] [stderr]    |                                     ^ help: consider prefixing with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/parser/irbuilder/checker.rs:67:37
[INFO] [stderr]    |
[INFO] [stderr] 67 |             RawToken::ByPointer(box t) => {
[INFO] [stderr]    |                                     ^ help: consider prefixing with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lid`
[INFO] [stderr]    --> src/parser/irbuilder/checker.rs:108:36
[INFO] [stderr]     |
[INFO] [stderr] 108 | ...                   Lambda(lid, parameter_type) => unimplemented!(),
[INFO] [stderr]     |                              ^^^ help: consider prefixing with an underscore: `_lid`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lid`
[INFO] [stderr]    --> src/parser/irbuilder/checker.rs:108:36
[INFO] [stderr]     |
[INFO] [stderr] 108 | ...                   Lambda(lid, parameter_type) => unimplemented!(),
[INFO] [stderr]     |                              ^^^ help: consider prefixing with an underscore: `_lid`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parameter_type`
[INFO] [stderr]    --> src/parser/irbuilder/checker.rs:108:41
[INFO] [stderr]     |
[INFO] [stderr] 108 | ...                   Lambda(lid, parameter_type) => unimplemented!(),
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_parameter_type`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parameter_type`
[INFO] [stderr]    --> src/parser/irbuilder/checker.rs:108:41
[INFO] [stderr]     |
[INFO] [stderr] 108 | ...                   Lambda(lid, parameter_type) => unimplemented!(),
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_parameter_type`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build`
[INFO] [stderr]  --> src/parser/body/match.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn build(_source: impl BodySource) -> Result<MatchExpr, ()> {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `param_borrow`
[INFO] [stderr]   --> src/interpreter/runner/parambuffer.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn param_borrow(&'p self, i: usize) -> &'p Value {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build`
[INFO] [stderr]  --> src/parser/body/match.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn build(_source: impl BodySource) -> Result<MatchExpr, ()> {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `param_borrow`
[INFO] [stderr]   --> src/interpreter/runner/parambuffer.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn param_borrow(&'p self, i: usize) -> &'p Value {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.16s
[INFO] running `"docker" "inspect" "e6a021d5691993c30789bcfa5fc6b62c5c12b8d288c1cc2f0c0bfada9c67dbe9"`
[INFO] running `"docker" "rm" "-f" "e6a021d5691993c30789bcfa5fc6b62c5c12b8d288c1cc2f0c0bfada9c67dbe9"`
[INFO] [stdout] e6a021d5691993c30789bcfa5fc6b62c5c12b8d288c1cc2f0c0bfada9c67dbe9