[INFO] cloning repository https://github.com/PabloReszczynski/Clank
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PabloReszczynski/Clank" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPabloReszczynski%2FClank", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPabloReszczynski%2FClank'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 68edacc440fe529d97afb3c6bd2bd676b30ac53b
[INFO] checking PabloReszczynski/Clank against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPabloReszczynski%2FClank" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PabloReszczynski/Clank on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PabloReszczynski/Clank
[INFO] finished tweaking git repo https://github.com/PabloReszczynski/Clank
[INFO] tweaked toml for git repo https://github.com/PabloReszczynski/Clank written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/PabloReszczynski/Clank already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3dcac22c9213321f3932ff5d520992ab4b3373d20ee16ae7650fc7e465f771cf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3dcac22c9213321f3932ff5d520992ab4b3373d20ee16ae7650fc7e465f771cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3dcac22c9213321f3932ff5d520992ab4b3373d20ee16ae7650fc7e465f771cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dcac22c9213321f3932ff5d520992ab4b3373d20ee16ae7650fc7e465f771cf", kill_on_drop: false }`
[INFO] [stdout] 3dcac22c9213321f3932ff5d520992ab4b3373d20ee16ae7650fc7e465f771cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54f8eb753d3574cf649a73765ced9923c0951df5dd8dbfe1ffca237c51b0424b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "54f8eb753d3574cf649a73765ced9923c0951df5dd8dbfe1ffca237c51b0424b", kill_on_drop: false }`
[INFO] [stderr]     Checking clank v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]   --> src/parser.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let src = String::from("(+ 1 2)");
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t1`
[INFO] [stdout]   --> src/parser.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let t1 = String::from("+");
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_t1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t2`
[INFO] [stdout]   --> src/parser.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let t2 = String::from("1");
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_t2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t3`
[INFO] [stdout]   --> src/parser.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let t3 = String::from("2");
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_t3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t4`
[INFO] [stdout]   --> src/parser.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let t4 = String::from("(");
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_t4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t5`
[INFO] [stdout]   --> src/parser.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let t5 = String::from(")");
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_t5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `LispVal`
[INFO] [stdout]  --> src/main.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum LispVal<'a> {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `show_val`
[INFO] [stdout]   --> src/main.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn show_val(val: &LispVal) -> String {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `show_list`
[INFO] [stdout]   --> src/main.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn show_list(contents: &LinkedList<&LispVal>) -> String {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "54f8eb753d3574cf649a73765ced9923c0951df5dd8dbfe1ffca237c51b0424b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54f8eb753d3574cf649a73765ced9923c0951df5dd8dbfe1ffca237c51b0424b", kill_on_drop: false }`
[INFO] [stdout] 54f8eb753d3574cf649a73765ced9923c0951df5dd8dbfe1ffca237c51b0424b