[INFO] cloning repository https://github.com/claytonwramsey/jam-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/claytonwramsey/jam-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclaytonwramsey%2Fjam-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclaytonwramsey%2Fjam-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a2cbe9df98b42e62ad6ea94b71faab407d2aed68
[INFO] checking claytonwramsey/jam-rs against try#84addd32a13fa2d3f62fe5d99031611147b7fb13 for pr-147565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclaytonwramsey%2Fjam-rs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/claytonwramsey/jam-rs
[INFO] finished tweaking git repo https://github.com/claytonwramsey/jam-rs
[INFO] tweaked toml for git repo https://github.com/claytonwramsey/jam-rs written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/claytonwramsey/jam-rs on toolchain 84addd32a13fa2d3f62fe5d99031611147b7fb13
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/claytonwramsey/jam-rs 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" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking claytonwramsey/jam-rs against try#84addd32a13fa2d3f62fe5d99031611147b7fb13 for pr-147565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclaytonwramsey%2Fjam-rs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/claytonwramsey/jam-rs
[INFO] finished tweaking git repo https://github.com/claytonwramsey/jam-rs
[INFO] tweaked toml for git repo https://github.com/claytonwramsey/jam-rs written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/claytonwramsey/jam-rs on toolchain 84addd32a13fa2d3f62fe5d99031611147b7fb13
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/claytonwramsey/jam-rs 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" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9dc2a62b8cc6ea8fe2dc56400ad3205be72f38385e4354bed6b7de7d508e454f
[INFO] running `Command { std: "docker" "start" "-a" "9dc2a62b8cc6ea8fe2dc56400ad3205be72f38385e4354bed6b7de7d508e454f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9dc2a62b8cc6ea8fe2dc56400ad3205be72f38385e4354bed6b7de7d508e454f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dc2a62b8cc6ea8fe2dc56400ad3205be72f38385e4354bed6b7de7d508e454f", kill_on_drop: false }`
[INFO] [stdout] 9dc2a62b8cc6ea8fe2dc56400ad3205be72f38385e4354bed6b7de7d508e454f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+84addd32a13fa2d3f62fe5d99031611147b7fb13" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8722f71d1c429050373295cab080e0c6a7ae7b5c72446dbcd918a36a3ec6305b
[INFO] running `Command { std: "docker" "start" "-a" "8722f71d1c429050373295cab080e0c6a7ae7b5c72446dbcd918a36a3ec6305b", kill_on_drop: false }`
[INFO] [stderr]     Checking jam-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `keys` and `eq` are never used
[INFO] [stdout]   --> src/binding.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub trait Environment: Sized + Eq {
[INFO] [stdout]    |           ----------- methods in this trait
[INFO] [stdout] 23 |     /// Get the set of keys for this environment.
[INFO] [stdout] 24 |     fn keys<'a>(&'a self) -> Box<dyn Iterator<Item = &'a str> + 'a>;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn eq(&self, other: &Self) -> bool
[INFO] [stdout]    |        ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CallByValue` is never constructed
[INFO] [stdout]   --> src/binding.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub struct CallByValue {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ValueCell` is never used
[INFO] [stdout]   --> src/binding.rs:86:6
[INFO] [stdout]    |
[INFO] [stdout] 86 | type ValueCell = RefCell<Option<Rc<EitherValue<CallByValue>>>>;
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `clone_storage` is never used
[INFO] [stdout]   --> src/binding.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 88 | impl CallByValue {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 91 |     fn clone_storage(&self) -> HashMap<String, ValueCell> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NameValue` is never used
[INFO] [stdout]    --> src/binding.rs:188:6
[INFO] [stdout]     |
[INFO] [stdout] 188 | type NameValue = (Option<Rc<CallByName>>, Rc<Ast>);
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CallByName` is never constructed
[INFO] [stdout]    --> src/binding.rs:192:12
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub struct CallByName {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `clone_storage` and `with_storage` are never used
[INFO] [stdout]    --> src/binding.rs:204:8
[INFO] [stdout]     |
[INFO] [stdout] 203 | impl CallByName {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 204 |     fn clone_storage(&self) -> HashMap<String, RefCell<Option<NameValue>>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 212 |     fn with_storage(storage: HashMap<String, RefCell<Option<NameValue>>>) -> Rc<CallByName> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `NeedValue` is never used
[INFO] [stdout]    --> src/binding.rs:304:6
[INFO] [stdout]     |
[INFO] [stdout] 304 | enum NeedValue {
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CallByNeed` is never constructed
[INFO] [stdout]    --> src/binding.rs:314:12
[INFO] [stdout]     |
[INFO] [stdout] 314 | pub struct CallByNeed {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `clone_storage` and `with_storage` are never used
[INFO] [stdout]    --> src/binding.rs:322:8
[INFO] [stdout]     |
[INFO] [stdout] 321 | impl CallByNeed {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 322 |     fn clone_storage(&self) -> HashMap<String, RefCell<Option<NeedValue>>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 330 |     fn with_storage(storage: HashMap<String, RefCell<Option<NeedValue>>>) -> Rc<CallByNeed> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Unbound` and `ForwardReference` are never constructed
[INFO] [stdout]   --> src/evaluate.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum Error<E: Environment> {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 12 |     /// A variable was unbound and occurred free.
[INFO] [stdout] 13 |     Unbound(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     ForwardReference(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `WeakClosure` is never constructed
[INFO] [stdout]   --> src/value.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub enum EitherValue<E: Environment> {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 53 |     WeakClosure {
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EitherValue` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `demote_in` is never used
[INFO] [stdout]   --> src/value.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn demote_in<E: Environment>(ev: &Rc<EitherValue<E>>, env: &E) -> Rc<EitherValue<E>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `strengthen` is never used
[INFO] [stdout]    --> src/value.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub fn strengthen<E: Environment>(ev: &Rc<EitherValue<E>>) -> Rc<EitherValue<E>> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_strong` and `strongly_refers_to` are never used
[INFO] [stdout]    --> src/value.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 124 | impl<E: Environment> EitherValue<E> {
[INFO] [stdout]     | ----------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 127 |     fn is_strong(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 140 |     fn strongly_refers_to(&self, env: &E) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "8722f71d1c429050373295cab080e0c6a7ae7b5c72446dbcd918a36a3ec6305b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8722f71d1c429050373295cab080e0c6a7ae7b5c72446dbcd918a36a3ec6305b", kill_on_drop: false }`
[INFO] [stdout] 8722f71d1c429050373295cab080e0c6a7ae7b5c72446dbcd918a36a3ec6305b
