[INFO] updating cached repository https://github.com/tech6hutch/lang-compiler
[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] b876793959149a653e4614da96686ca7ea121203
[INFO] checking tech6hutch/lang-compiler against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftech6hutch%2Flang-compiler" "/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/tech6hutch/lang-compiler on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tech6hutch/lang-compiler
[INFO] finished tweaking git repo https://github.com/tech6hutch/lang-compiler
[INFO] tweaked toml for git repo https://github.com/tech6hutch/lang-compiler written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/tech6hutch/lang-compiler already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f21007378b47d740657b4f2a25ed6fa8134e1f1f15534fb9262c64dc77b7fc86
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "f21007378b47d740657b4f2a25ed6fa8134e1f1f15534fb9262c64dc77b7fc86"`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking unicode_names2 v0.4.0
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking bigdecimal v0.1.0
[INFO] [stderr]     Checking lang-compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `Display`, `Formatter`, `self`
[INFO] [stderr]  --> src/parser.rs:2:11
[INFO] [stderr]   |
[INFO] [stderr] 2 |     fmt::{self, Display, Debug, Formatter},
[INFO] [stderr]   |           ^^^^  ^^^^^^^         ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Display`, `Formatter`, `self`
[INFO] [stderr]  --> src/parser.rs:2:11
[INFO] [stderr]   |
[INFO] [stderr] 2 |     fmt::{self, Display, Debug, Formatter},
[INFO] [stderr]   |           ^^^^  ^^^^^^^         ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/interpreter.rs:103:25
[INFO] [stderr]     |
[INFO] [stderr] 103 |                         _ => return Err(RuntimeError::OperandTypeError {
[INFO] [stderr]     |                         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `operator`
[INFO] [stderr]   --> src/errors.rs:95:40
[INFO] [stderr]    |
[INFO] [stderr] 95 |             &OperandTypeError { arity, ref operator, type_str } => {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^ help: try ignoring the field: `operator: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/interpreter.rs:103:25
[INFO] [stderr]     |
[INFO] [stderr] 103 |                         _ => return Err(RuntimeError::OperandTypeError {
[INFO] [stderr]     |                         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `operator`
[INFO] [stderr]   --> src/errors.rs:95:40
[INFO] [stderr]    |
[INFO] [stderr] 95 |             &OperandTypeError { arity, ref operator, type_str } => {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^ help: try ignoring the field: `operator: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `if_some`
[INFO] [stderr]  --> src/util.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn if_some<T>(b: bool, t: T) -> Option<T> {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `if_then`
[INFO] [stderr]  --> src/util.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn if_then<T, F: FnOnce() -> T>(b: bool, f: F) -> Option<T> {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_col`
[INFO] [stderr]   --> src/text.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     pub fn next_col(&self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `TempStr`
[INFO] [stderr]    --> src/lexer.rs:215:5
[INFO] [stderr]     |
[INFO] [stderr] 215 |     TempStr(TemplateStringToken),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `synchronize`
[INFO] [stderr]    --> src/parser.rs:179:4
[INFO] [stderr]     |
[INFO] [stderr] 179 | fn synchronize(iter: MyIterType!()) {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `if_some`
[INFO] [stderr]  --> src/util.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn if_some<T>(b: bool, t: T) -> Option<T> {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `if_then`
[INFO] [stderr]  --> src/util.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn if_then<T, F: FnOnce() -> T>(b: bool, f: F) -> Option<T> {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_col`
[INFO] [stderr]   --> src/text.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     pub fn next_col(&self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `TempStr`
[INFO] [stderr]    --> src/lexer.rs:215:5
[INFO] [stderr]     |
[INFO] [stderr] 215 |     TempStr(TemplateStringToken),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `synchronize`
[INFO] [stderr]    --> src/parser.rs:179:4
[INFO] [stderr]     |
[INFO] [stderr] 179 | fn synchronize(iter: MyIterType!()) {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.84s
[INFO] running `"docker" "inspect" "f21007378b47d740657b4f2a25ed6fa8134e1f1f15534fb9262c64dc77b7fc86"`
[INFO] running `"docker" "rm" "-f" "f21007378b47d740657b4f2a25ed6fa8134e1f1f15534fb9262c64dc77b7fc86"`
[INFO] [stdout] f21007378b47d740657b4f2a25ed6fa8134e1f1f15534fb9262c64dc77b7fc86