[INFO] updating cached repository https://github.com/peter-wilkins-mayden/mal-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] e74e436326984f33f144238c6a6ae6619b453a19
[INFO] checking peter-wilkins-mayden/mal-rust against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeter-wilkins-mayden%2Fmal-rust" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/peter-wilkins-mayden/mal-rust on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/peter-wilkins-mayden/mal-rust
[INFO] finished tweaking git repo https://github.com/peter-wilkins-mayden/mal-rust
[INFO] tweaked toml for git repo https://github.com/peter-wilkins-mayden/mal-rust written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/peter-wilkins-mayden/mal-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "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] 238fbf3cb192be59406fa55ad4f7c10b063e6149195da94fd34a0b2906b73e97
[INFO] running `"docker" "start" "-a" "238fbf3cb192be59406fa55ad4f7c10b063e6149195da94fd34a0b2906b73e97"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking smallstr v0.1.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling terminfo v0.6.1
[INFO] [stderr]     Checking mortal v0.2.1
[INFO] [stderr]     Checking linefeed v0.6.0
[INFO] [stderr]     Checking mal-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `start`
[INFO] [stderr]   --> src/reader.rs:46:28
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn read_seq(&mut self, start: &str, end: &str) -> Result<MalType, MalErr> {
[INFO] [stderr]    |                            ^^^^^ help: consider prefixing with an underscore: `_start`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `end`
[INFO] [stderr]   --> src/reader.rs:46:41
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn read_seq(&mut self, start: &str, end: &str) -> Result<MalType, MalErr> {
[INFO] [stderr]    |                                         ^^^ help: consider prefixing with an underscore: `_end`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unescape_str`
[INFO] [stderr]    --> src/reader.rs:100:1
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn unescape_str(s: &str) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `start`
[INFO] [stderr]   --> src/reader.rs:46:28
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn read_seq(&mut self, start: &str, end: &str) -> Result<MalType, MalErr> {
[INFO] [stderr]    |                            ^^^^^ help: consider prefixing with an underscore: `_start`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `end`
[INFO] [stderr]   --> src/reader.rs:46:41
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn read_seq(&mut self, start: &str, end: &str) -> Result<MalType, MalErr> {
[INFO] [stderr]    |                                         ^^^ help: consider prefixing with an underscore: `_end`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unescape_str`
[INFO] [stderr]    --> src/reader.rs:100:1
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn unescape_str(s: &str) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MalType`
[INFO] [stderr]  --> src/bin/step1_read_print.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 | use mal_rust::types::{MalType, MalErr};
[INFO] [stderr]   |                       ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MalType`
[INFO] [stderr]  --> src/bin/step1_read_print.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 | use mal_rust::types::{MalType, MalErr};
[INFO] [stderr]   |                       ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.28s
[INFO] running `"docker" "inspect" "238fbf3cb192be59406fa55ad4f7c10b063e6149195da94fd34a0b2906b73e97"`
[INFO] running `"docker" "rm" "-f" "238fbf3cb192be59406fa55ad4f7c10b063e6149195da94fd34a0b2906b73e97"`
[INFO] [stdout] 238fbf3cb192be59406fa55ad4f7c10b063e6149195da94fd34a0b2906b73e97