[INFO] cloning repository https://github.com/deryilz/basic-hm-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/deryilz/basic-hm-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderyilz%2Fbasic-hm-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderyilz%2Fbasic-hm-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9435c1b881034fc63b0dd5c0134f43613d383ebb
[INFO] checking deryilz/basic-hm-rust against try#b66808126f24f2f30898306a881e1676824ea80c for pr-133502-23
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderyilz%2Fbasic-hm-rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/deryilz/basic-hm-rust
[INFO] finished tweaking git repo https://github.com/deryilz/basic-hm-rust
[INFO] tweaked toml for git repo https://github.com/deryilz/basic-hm-rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/deryilz/basic-hm-rust on toolchain b66808126f24f2f30898306a881e1676824ea80c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b66808126f24f2f30898306a881e1676824ea80c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/deryilz/basic-hm-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b66808126f24f2f30898306a881e1676824ea80c" "fetch" "--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-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b05a5a3615d4e3fd6c79e56659d49e0041df03e36136ed5b18208a7ef28388dc
[INFO] running `Command { std: "docker" "start" "b05a5a3615d4e3fd6c79e56659d49e0041df03e36136ed5b18208a7ef28388dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b05a5a3615d4e3fd6c79e56659d49e0041df03e36136ed5b18208a7ef28388dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b05a5a3615d4e3fd6c79e56659d49e0041df03e36136ed5b18208a7ef28388dc" "/opt/rustwide/cargo-home/bin/cargo" "+b66808126f24f2f30898306a881e1676824ea80c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b05a5a3615d4e3fd6c79e56659d49e0041df03e36136ed5b18208a7ef28388dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b05a5a3615d4e3fd6c79e56659d49e0041df03e36136ed5b18208a7ef28388dc" "/opt/rustwide/cargo-home/bin/cargo" "+b66808126f24f2f30898306a881e1676824ea80c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling im v15.1.0
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking sized-chunks v0.6.5
[INFO] [stderr]     Checking toy-typechecker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/structs.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     IntLiteral(i32),
[INFO] [stdout]   |     ---------- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 -     IntLiteral(i32),
[INFO] [stdout] 4 +     IntLiteral(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `BoolLiteral` and `Let` are never constructed
[INFO] [stdout]   --> src/structs.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout]  3 | pub enum Node {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout]  4 |     IntLiteral(i32),
[INFO] [stdout]  5 |     BoolLiteral(bool),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     Let(String, Box<Node>, Box<Node>),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `bool`, `set`, and `to_string` are never used
[INFO] [stdout]   --> src/structs.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Node {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn bool(b: bool) -> Node {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn set(name: &str, value: Node, rest: Node) -> Node {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn to_string(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/structs.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     IntLiteral(i32),
[INFO] [stdout]   |     ---------- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 -     IntLiteral(i32),
[INFO] [stdout] 4 +     IntLiteral(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `BoolLiteral` and `Let` are never constructed
[INFO] [stdout]   --> src/structs.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout]  3 | pub enum Node {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout]  4 |     IntLiteral(i32),
[INFO] [stdout]  5 |     BoolLiteral(bool),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     Let(String, Box<Node>, Box<Node>),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `bool`, `set`, and `to_string` are never used
[INFO] [stdout]   --> src/structs.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Node {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn bool(b: bool) -> Node {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn set(name: &str, value: Node, rest: Node) -> Node {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn to_string(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.12s
[INFO] running `Command { std: "docker" "inspect" "b05a5a3615d4e3fd6c79e56659d49e0041df03e36136ed5b18208a7ef28388dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b05a5a3615d4e3fd6c79e56659d49e0041df03e36136ed5b18208a7ef28388dc", kill_on_drop: false }`
[INFO] [stdout] b05a5a3615d4e3fd6c79e56659d49e0041df03e36136ed5b18208a7ef28388dc
