[INFO] cloning repository https://github.com/ijks/esolangs-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ijks/esolangs-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fijks%2Fesolangs-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fijks%2Fesolangs-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9aba1332285c0c330988fe7d60d35987fdf2af74
[INFO] checking ijks/esolangs-rs against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fijks%2Fesolangs-rs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ijks/esolangs-rs on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/ijks/esolangs-rs
[INFO] finished tweaking git repo https://github.com/ijks/esolangs-rs
[INFO] tweaked toml for git repo https://github.com/ijks/esolangs-rs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ijks/esolangs-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proptest v0.10.1
[INFO] [stderr]   Downloaded utf8-chars v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d61451cb8f0d411ce303ff4cda9f2e3d97604ca0a299fa882385306a00085856
[INFO] running `Command { std: "docker" "start" "-a" "d61451cb8f0d411ce303ff4cda9f2e3d97604ca0a299fa882385306a00085856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d61451cb8f0d411ce303ff4cda9f2e3d97604ca0a299fa882385306a00085856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d61451cb8f0d411ce303ff4cda9f2e3d97604ca0a299fa882385306a00085856", kill_on_drop: false }`
[INFO] [stdout] d61451cb8f0d411ce303ff4cda9f2e3d97604ca0a299fa882385306a00085856
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0baa8a4ec25c81b87974c48974999a151da09cc4b1ae8bbcdecf255fd0ff9d92
[INFO] running `Command { std: "docker" "start" "-a" "0baa8a4ec25c81b87974c48974999a151da09cc4b1ae8bbcdecf255fd0ff9d92", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking bit-vec v0.6.2
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking emmental v0.1.0 (/opt/rustwide/workdir/emmental)
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> emmental/src/state.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &sym in program.next() {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to iterate over `program` remove the call to `next`
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &sym in program.by_ref() {
[INFO] [stdout]    |                            ~~~~~~~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 28 |         if let Some(&sym) = program.next() {
[INFO] [stdout]    |         ~~~~~~~~~~~~    ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> emmental/src/state.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &sym in program.next() {
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to iterate over `program` remove the call to `next`
[INFO] [stdout]    |
[INFO] [stdout] 28 |         for &sym in program.by_ref() {
[INFO] [stdout]    |                            ~~~~~~~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 28 |         if let Some(&sym) = program.next() {
[INFO] [stdout]    |         ~~~~~~~~~~~~    ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking utf8-chars v1.0.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking proptest v0.10.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking mascarpone v0.1.0 (/opt/rustwide/workdir/mascarpone)
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> mascarpone/src/state.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{self, BufRead, BufReader, Read, Write},
[INFO] [stdout]   |                ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `program`
[INFO] [stdout]   --> mascarpone/src/operation.rs:22:27
[INFO] [stdout]    |
[INFO] [stdout] 22 |             Self::Program(program, interp) => todo!(),
[INFO] [stdout]    |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_program`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interp`
[INFO] [stdout]   --> mascarpone/src/operation.rs:22:36
[INFO] [stdout]    |
[INFO] [stdout] 22 |             Self::Program(program, interp) => todo!(),
[INFO] [stdout]    |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_interp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Variant` is more private than the item `Interpreter::variant`
[INFO] [stdout]   --> mascarpone/src/interpreter.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn variant(&self) -> &Variant {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `Interpreter::variant` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Variant` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> mascarpone/src/interpreter.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Variant {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `mapping` and `variant` are never used
[INFO] [stdout]   --> mascarpone/src/interpreter.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Interpreter {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn mapping(mapping: HashMap<Symbol, Operation>) -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |     pub fn variant(&self) -> &Variant {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pop_while` is never used
[INFO] [stdout]   --> mascarpone/src/stack.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl<T> Stack<T> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn pop_while<'a, P>(&'a mut self, mut pred: P) -> impl Iterator<Item = T> + 'a
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> mascarpone/src/state.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{self, BufRead, BufReader, Read, Write},
[INFO] [stdout]   |                ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `program`
[INFO] [stdout]   --> mascarpone/src/operation.rs:22:27
[INFO] [stdout]    |
[INFO] [stdout] 22 |             Self::Program(program, interp) => todo!(),
[INFO] [stdout]    |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_program`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interp`
[INFO] [stdout]   --> mascarpone/src/operation.rs:22:36
[INFO] [stdout]    |
[INFO] [stdout] 22 |             Self::Program(program, interp) => todo!(),
[INFO] [stdout]    |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_interp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Variant` is more private than the item `Interpreter::variant`
[INFO] [stdout]   --> mascarpone/src/interpreter.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn variant(&self) -> &Variant {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `Interpreter::variant` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Variant` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> mascarpone/src/interpreter.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Variant {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `mapping` and `variant` are never used
[INFO] [stdout]   --> mascarpone/src/interpreter.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Interpreter {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn mapping(mapping: HashMap<Symbol, Operation>) -> Self {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |     pub fn variant(&self) -> &Variant {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.81s
[INFO] running `Command { std: "docker" "inspect" "0baa8a4ec25c81b87974c48974999a151da09cc4b1ae8bbcdecf255fd0ff9d92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0baa8a4ec25c81b87974c48974999a151da09cc4b1ae8bbcdecf255fd0ff9d92", kill_on_drop: false }`
[INFO] [stdout] 0baa8a4ec25c81b87974c48974999a151da09cc4b1ae8bbcdecf255fd0ff9d92