[INFO] cloning repository https://github.com/nomeata/nanobruijn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nomeata/nanobruijn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnomeata%2Fnanobruijn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnomeata%2Fnanobruijn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a86285c0829e410c2442d57d38d6003fb3993d4
[INFO] checking nomeata/nanobruijn against f4dd856795debe636f2ba39a900f162f5abeb7e8 for pr-160904
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnomeata%2Fnanobruijn" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nomeata/nanobruijn
[INFO] finished tweaking git repo https://github.com/nomeata/nanobruijn
[INFO] tweaked toml for git repo https://github.com/nomeata/nanobruijn written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nomeata/nanobruijn on toolchain f4dd856795debe636f2ba39a900f162f5abeb7e8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f4dd856795debe636f2ba39a900f162f5abeb7e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nomeata/nanobruijn 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" "+f4dd856795debe636f2ba39a900f162f5abeb7e8" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stacker v0.1.23
[INFO] [stderr]   Downloaded psm v0.1.30
[INFO] [stderr]   Downloaded ar_archive_writer v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 3222a0b3c7954992cda57f4b8bcb65bceaaa14af63c21efcaac4c5747ec7ed55
[INFO] running `Command { std: "docker" "start" "3222a0b3c7954992cda57f4b8bcb65bceaaa14af63c21efcaac4c5747ec7ed55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3222a0b3c7954992cda57f4b8bcb65bceaaa14af63c21efcaac4c5747ec7ed55", 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" "3222a0b3c7954992cda57f4b8bcb65bceaaa14af63c21efcaac4c5747ec7ed55" "/opt/rustwide/cargo-home/bin/cargo" "+f4dd856795debe636f2ba39a900f162f5abeb7e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3222a0b3c7954992cda57f4b8bcb65bceaaa14af63c21efcaac4c5747ec7ed55", 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" "3222a0b3c7954992cda57f4b8bcb65bceaaa14af63c21efcaac4c5747ec7ed55" "/opt/rustwide/cargo-home/bin/cargo" "+f4dd856795debe636f2ba39a900f162f5abeb7e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling cc v1.2.58
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking semver v1.0.27
[INFO] [stderr]     Checking indexmap v2.13.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling stacker v0.1.23
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling ar_archive_writer v0.5.1
[INFO] [stderr]    Compiling psm v0.1.30
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking nanobruijn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `CorePtr`
[INFO] [stdout]  --> src/tc.rs:7:53
[INFO] [stdout]   |
[INFO] [stdout] 7 |     nat_xor, nat_shr, nat_shl, AppArgs, ExportFile, CorePtr, LevelPtr,
[INFO] [stdout]   |                                                     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CorePtr`
[INFO] [stdout]  --> src/tc.rs:7:53
[INFO] [stdout]   |
[INFO] [stdout] 7 |     nat_xor, nat_shr, nat_shl, AppArgs, ExportFile, CorePtr, LevelPtr,
[INFO] [stdout]   |                                                     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CorePtr`
[INFO] [stdout]  --> src/tests/util.rs:1:47
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::util::{Config, CowStr, ExportFile, CorePtr, LevelPtr, ExprPtr, TcCtx};
[INFO] [stdout]   |                                               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trace_defeq_flag`
[INFO] [stdout]    --> src/tc.rs:244:17
[INFO] [stdout]     |
[INFO] [stdout] 244 |             let trace_defeq_flag = self.config.declaration_filter.is_some();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trace_defeq_flag`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trace_defeq_flag`
[INFO] [stdout]    --> src/tc.rs:244:17
[INFO] [stdout]     |
[INFO] [stdout] 244 |             let trace_defeq_flag = self.config.declaration_filter.is_some();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trace_defeq_flag`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `BvTails` is more private than the item `LeanDag::bvtails`
[INFO] [stdout]     --> src/util.rs:1774:5
[INFO] [stdout]      |
[INFO] [stdout] 1774 |     pub bvtails: crate::canon::BvTails,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `LeanDag::bvtails` is reachable at visibility `pub`
[INFO] [stdout]      |
[INFO] [stdout] note: but type `BvTails` is only usable at visibility `pub(crate)`
[INFO] [stdout]     --> src/canon.rs:184:1
[INFO] [stdout]      |
[INFO] [stdout]  184 | pub(crate) struct BvTails {
[INFO] [stdout]      | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `single`, `shl`, `unbind`, `or_into`, and `min_ge` are never used
[INFO] [stdout]    --> src/canon.rs:48:19
[INFO] [stdout]     |
[INFO] [stdout]  45 | impl BvSet {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  48 |     pub(crate) fn single(i: u16) -> Self {
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 108 |     pub(crate) fn shl(&self, s: u16) -> Self {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |     pub(crate) fn unbind(&self) -> Self {
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 122 |     pub(crate) fn or_into(&mut self, o: &Self) {
[INFO] [stdout]     |                   ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     pub(crate) fn min_ge(&self, cutoff: u16) -> Option<u16> { min_ge_words(self.head, &self.tail, cutoff) }
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ensure_infers_as_sort` is never used
[INFO] [stdout]    --> src/nanoda_tc.rs:207:19
[INFO] [stdout]     |
[INFO] [stdout] 123 | impl<'x, 't: 'x, 'p: 't> NanodaTypeChecker<'x, 't, 'p> {
[INFO] [stdout]     | ------------------------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 207 |     pub(crate) fn ensure_infers_as_sort(&mut self, e: ExprPtr<'t>) -> LevelPtr<'t> {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `UniqueHashMap` is never used
[INFO] [stdout]   --> src/util.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(crate) type UniqueHashMap<K, V> = HashMap<K, V, BuildHasherDefault<UniqueHasher>>;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_unique_hash_map` is never used
[INFO] [stdout]    --> src/util.rs:191:15
[INFO] [stdout]     |
[INFO] [stdout] 191 | pub(crate) fn new_unique_hash_map<K, V>() -> UniqueHashMap<K, V> { UniqueHashMap::with_hasher(Default::default()) }
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_allocated` is never used
[INFO] [stdout]    --> src/util.rs:200:19
[INFO] [stdout]     |
[INFO] [stdout] 197 | impl<K, V> LazyMap<K, V> {
[INFO] [stdout]     | ------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 200 |     pub(crate) fn is_allocated(&self) -> bool { self.0.is_some() }
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_mut` is never used
[INFO] [stdout]    --> src/util.rs:208:19
[INFO] [stdout]     |
[INFO] [stdout] 203 | impl<K: Eq + std::hash::Hash, V> LazyMap<K, V> {
[INFO] [stdout]     | ---------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 208 |     pub(crate) fn get_mut(&mut self, key: &K) -> Option<&mut V> {
[INFO] [stdout]     |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `BvTails` is more private than the item `LeanDag::bvtails`
[INFO] [stdout]     --> src/util.rs:1774:5
[INFO] [stdout]      |
[INFO] [stdout] 1774 |     pub bvtails: crate::canon::BvTails,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `LeanDag::bvtails` is reachable at visibility `pub`
[INFO] [stdout]      |
[INFO] [stdout] note: but type `BvTails` is only usable at visibility `pub(crate)`
[INFO] [stdout]     --> src/canon.rs:184:1
[INFO] [stdout]      |
[INFO] [stdout]  184 | pub(crate) struct BvTails {
[INFO] [stdout]      | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `single` is never used
[INFO] [stdout]   --> src/canon.rs:48:19
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl BvSet {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub(crate) fn single(i: u16) -> Self {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ensure_infers_as_sort` is never used
[INFO] [stdout]    --> src/nanoda_tc.rs:207:19
[INFO] [stdout]     |
[INFO] [stdout] 123 | impl<'x, 't: 'x, 'p: 't> NanodaTypeChecker<'x, 't, 'p> {
[INFO] [stdout]     | ------------------------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 207 |     pub(crate) fn ensure_infers_as_sort(&mut self, e: ExprPtr<'t>) -> LevelPtr<'t> {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `UniqueHashMap` is never used
[INFO] [stdout]   --> src/util.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(crate) type UniqueHashMap<K, V> = HashMap<K, V, BuildHasherDefault<UniqueHasher>>;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_unique_hash_map` is never used
[INFO] [stdout]    --> src/util.rs:191:15
[INFO] [stdout]     |
[INFO] [stdout] 191 | pub(crate) fn new_unique_hash_map<K, V>() -> UniqueHashMap<K, V> { UniqueHashMap::with_hasher(Default::default()) }
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_allocated` is never used
[INFO] [stdout]    --> src/util.rs:200:19
[INFO] [stdout]     |
[INFO] [stdout] 197 | impl<K, V> LazyMap<K, V> {
[INFO] [stdout]     | ------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 200 |     pub(crate) fn is_allocated(&self) -> bool { self.0.is_some() }
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_mut` is never used
[INFO] [stdout]    --> src/util.rs:208:19
[INFO] [stdout]     |
[INFO] [stdout] 203 | impl<K: Eq + std::hash::Hash, V> LazyMap<K, V> {
[INFO] [stdout]     | ---------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 208 |     pub(crate) fn get_mut(&mut self, key: &K) -> Option<&mut V> {
[INFO] [stdout]     |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let (mut export_file, skipped_axioms) = cfg.to_export_file()?;
[INFO] [stdout]    |          ----^^^^^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MainError` is never constructed
[INFO] [stdout]   --> src/main.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct MainError(Box<dyn Error>);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let (mut export_file, skipped_axioms) = cfg.to_export_file()?;
[INFO] [stdout]    |          ----^^^^^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MainError` is never constructed
[INFO] [stdout]   --> src/main.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct MainError(Box<dyn Error>);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.22s
[INFO] running `Command { std: "docker" "inspect" "3222a0b3c7954992cda57f4b8bcb65bceaaa14af63c21efcaac4c5747ec7ed55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3222a0b3c7954992cda57f4b8bcb65bceaaa14af63c21efcaac4c5747ec7ed55", kill_on_drop: false }`
[INFO] [stdout] 3222a0b3c7954992cda57f4b8bcb65bceaaa14af63c21efcaac4c5747ec7ed55
