[INFO] updating cached repository https://github.com/foundoulis/slytherlisp_rust
[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] d5fb90327c70fe72e9482268ed8d5d79fc5109d0
[INFO] checking foundoulis/slytherlisp_rust against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffoundoulis%2Fslytherlisp_rust" "/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/foundoulis/slytherlisp_rust on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/foundoulis/slytherlisp_rust
[INFO] finished tweaking git repo https://github.com/foundoulis/slytherlisp_rust
[INFO] tweaked toml for git repo https://github.com/foundoulis/slytherlisp_rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/foundoulis/slytherlisp_rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] 57dfc04b54d7ebe988a5c80fdd91e0a01c8eb2108bb4c377ab5e70fa4e4e6bc9
[INFO] running `"docker" "start" "-a" "57dfc04b54d7ebe988a5c80fdd91e0a01c8eb2108bb4c377ab5e70fa4e4e6bc9"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking slytherlisp_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant `add` should have an upper camel case name
[INFO] [stderr]   --> src/types/callable.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     add,
[INFO] [stderr]    |     ^^^ help: convert the identifier to upper camel case: `Add`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `sub` should have an upper camel case name
[INFO] [stderr]   --> src/types/callable.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     sub,
[INFO] [stderr]    |     ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Sub`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `mul` should have an upper camel case name
[INFO] [stderr]   --> src/types/callable.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     mul,
[INFO] [stderr]    |     ^^^ help: convert the identifier to upper camel case: `Mul`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `div` should have an upper camel case name
[INFO] [stderr]   --> src/types/callable.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     div,
[INFO] [stderr]    |     ^^^ help: convert the identifier to upper camel case: `Div`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `print` should have an upper camel case name
[INFO] [stderr]   --> src/types/callable.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     print,
[INFO] [stderr]    |     ^^^^^ help: convert the identifier to upper camel case: `Print`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `add` should have an upper camel case name
[INFO] [stderr]   --> src/types/callable.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     add,
[INFO] [stderr]    |     ^^^ help: convert the identifier to upper camel case: `Add`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `sub` should have an upper camel case name
[INFO] [stderr]   --> src/types/callable.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     sub,
[INFO] [stderr]    |     ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Sub`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `mul` should have an upper camel case name
[INFO] [stderr]   --> src/types/callable.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     mul,
[INFO] [stderr]    |     ^^^ help: convert the identifier to upper camel case: `Mul`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `div` should have an upper camel case name
[INFO] [stderr]   --> src/types/callable.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     div,
[INFO] [stderr]    |     ^^^ help: convert the identifier to upper camel case: `Div`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `print` should have an upper camel case name
[INFO] [stderr]   --> src/types/callable.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     print,
[INFO] [stderr]    |     ^^^^^ help: convert the identifier to upper camel case: `Print`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stg`
[INFO] [stderr]    --> src/types/callable.rs:192:42
[INFO] [stderr]     |
[INFO] [stderr] 192 |     fn call(&mut self, args: &LispValue, stg: &mut LexicalVarStorage) -> LispValue {
[INFO] [stderr]     |                                          ^^^ help: consider prefixing with an underscore: `_stg`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/types/callable.rs:77:25
[INFO] [stderr]    |
[INFO] [stderr] 77 |                     let mut is_int = match *args_as_list[0] {
[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: function is never used: `run_repl`
[INFO] [stderr]   --> src/main.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn run_repl() {}
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stg`
[INFO] [stderr]    --> src/types/callable.rs:192:42
[INFO] [stderr]     |
[INFO] [stderr] 192 |     fn call(&mut self, args: &LispValue, stg: &mut LexicalVarStorage) -> LispValue {
[INFO] [stderr]     |                                          ^^^ help: consider prefixing with an underscore: `_stg`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/types/callable.rs:77:25
[INFO] [stderr]    |
[INFO] [stderr] 77 |                     let mut is_int = match *args_as_list[0] {
[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: function is never used: `run_repl`
[INFO] [stderr]   --> src/main.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn run_repl() {}
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `"docker" "inspect" "57dfc04b54d7ebe988a5c80fdd91e0a01c8eb2108bb4c377ab5e70fa4e4e6bc9"`
[INFO] running `"docker" "rm" "-f" "57dfc04b54d7ebe988a5c80fdd91e0a01c8eb2108bb4c377ab5e70fa4e4e6bc9"`
[INFO] [stdout] 57dfc04b54d7ebe988a5c80fdd91e0a01c8eb2108bb4c377ab5e70fa4e4e6bc9