[INFO] cloning repository https://github.com/E-Neo/tapl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/E-Neo/tapl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FE-Neo%2Ftapl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FE-Neo%2Ftapl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5da0e6cf31e800ef26f0d28408e6e8ce0a8a8f84
[INFO] checking E-Neo/tapl against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FE-Neo%2Ftapl" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/E-Neo/tapl
[INFO] finished tweaking git repo https://github.com/E-Neo/tapl
[INFO] tweaked toml for git repo https://github.com/E-Neo/tapl written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/E-Neo/tapl on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/E-Neo/tapl 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90c6b046bf66e374f78de8203a05ea2b50e86566a9b54023f69a55bcdc2018cd
[INFO] running `Command { std: "docker" "start" "-a" "90c6b046bf66e374f78de8203a05ea2b50e86566a9b54023f69a55bcdc2018cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90c6b046bf66e374f78de8203a05ea2b50e86566a9b54023f69a55bcdc2018cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90c6b046bf66e374f78de8203a05ea2b50e86566a9b54023f69a55bcdc2018cd", kill_on_drop: false }`
[INFO] [stdout] 90c6b046bf66e374f78de8203a05ea2b50e86566a9b54023f69a55bcdc2018cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bac052525317cbb37f0034c3b3cd619e124b54c0e551d830ea695763c7a28a7c
[INFO] running `Command { std: "docker" "start" "-a" "bac052525317cbb37f0034c3b3cd619e124b54c0e551d830ea695763c7a28a7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking ucd-trie v0.1.3
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking rustyline v7.0.0
[INFO] [stderr]     Checking tapl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:7:54
[INFO] [stdout]    |
[INFO] [stdout]  7 |   pub fn eval(ast: &AstNode) -> Result<AstNode, Error> {
[INFO] [stdout]    |  ______________________________________________________^
[INFO] [stdout]  8 | |     match ast {
[INFO] [stdout]  9 | |         AstNode::IfThenElse(t1, t2, t3) => match eval(t1)? {
[INFO] [stdout] 10 | |             AstNode::True => eval(t2),
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | /     match ast {
[INFO] [stdout]  9 | |         AstNode::IfThenElse(t1, t2, t3) => match eval(t1)? {
[INFO] [stdout] 10 | |             AstNode::True => eval(t2),
[INFO] [stdout] 11 | |             AstNode::False => eval(t3),
[INFO] [stdout] ...  |
[INFO] [stdout] 26 | |         _ => Ok(ast.clone()),
[INFO] [stdout] 27 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:9:44
[INFO] [stdout]    |
[INFO] [stdout]  9 |           AstNode::IfThenElse(t1, t2, t3) => match eval(t1)? {
[INFO] [stdout]    |  ____________________________________________^
[INFO] [stdout] 10 | |             AstNode::True => eval(t2),
[INFO] [stdout] 11 | |             AstNode::False => eval(t3),
[INFO] [stdout] 12 | |             _ => Ok(ast.clone()),
[INFO] [stdout] 13 | |         },
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, eval::Error>, AstNode>
[INFO] [stdout]  --> src/arith/eval.rs:9:50
[INFO] [stdout]   |
[INFO] [stdout] 9 |         AstNode::IfThenElse(t1, t2, t3) => match eval(t1)? {
[INFO] [stdout]   |                                                  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]  --> src/arith/eval.rs:9:50
[INFO] [stdout]   |
[INFO] [stdout] 9 |         AstNode::IfThenElse(t1, t2, t3) => match eval(t1)? {
[INFO] [stdout]   |                                                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]  --> src/arith/eval.rs:9:50
[INFO] [stdout]   |
[INFO] [stdout] 9 |         AstNode::IfThenElse(t1, t2, t3) => match eval(t1)? {
[INFO] [stdout]   |                                                  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:10:30
[INFO] [stdout]    |
[INFO] [stdout] 10 |             AstNode::True => eval(t2),
[INFO] [stdout]    |                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:11:31
[INFO] [stdout]    |
[INFO] [stdout] 11 |             AstNode::False => eval(t3),
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 |             _ => Ok(ast.clone()),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:14:26
[INFO] [stdout]    |
[INFO] [stdout] 14 |         AstNode::Zero => Ok(AstNode::Zero),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:15:29
[INFO] [stdout]    |
[INFO] [stdout] 15 |         AstNode::Succ(t) => Ok(AstNode::Succ(Box::new(eval(t)?))),
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, eval::Error>, AstNode>
[INFO] [stdout]   --> src/arith/eval.rs:15:55
[INFO] [stdout]    |
[INFO] [stdout] 15 |         AstNode::Succ(t) => Ok(AstNode::Succ(Box::new(eval(t)?))),
[INFO] [stdout]    |                                                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:15:55
[INFO] [stdout]    |
[INFO] [stdout] 15 |         AstNode::Succ(t) => Ok(AstNode::Succ(Box::new(eval(t)?))),
[INFO] [stdout]    |                                                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:15:55
[INFO] [stdout]    |
[INFO] [stdout] 15 |         AstNode::Succ(t) => Ok(AstNode::Succ(Box::new(eval(t)?))),
[INFO] [stdout]    |                                                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 |           AstNode::Pred(t) => match eval(t)? {
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 17 | |             AstNode::Zero => Ok(AstNode::Zero),
[INFO] [stdout] 18 | |             AstNode::Succ(t) => Ok(*t),
[INFO] [stdout] 19 | |             _ => Ok(ast.clone()),
[INFO] [stdout] 20 | |         },
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, eval::Error>, AstNode>
[INFO] [stdout]   --> src/arith/eval.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 |         AstNode::Pred(t) => match eval(t)? {
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 |         AstNode::Pred(t) => match eval(t)? {
[INFO] [stdout]    |                                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 |         AstNode::Pred(t) => match eval(t)? {
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:17:30
[INFO] [stdout]    |
[INFO] [stdout] 17 |             AstNode::Zero => Ok(AstNode::Zero),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:18:33
[INFO] [stdout]    |
[INFO] [stdout] 18 |             AstNode::Succ(t) => Ok(*t),
[INFO] [stdout]    |                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:19:18
[INFO] [stdout]    |
[INFO] [stdout] 19 |             _ => Ok(ast.clone()),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:21:31
[INFO] [stdout]    |
[INFO] [stdout] 21 |           AstNode::IsZero(t) => match eval(t)? {
[INFO] [stdout]    |  _______________________________^
[INFO] [stdout] 22 | |             AstNode::Zero => Ok(AstNode::True),
[INFO] [stdout] 23 | |             AstNode::Succ(_) => Ok(AstNode::False),
[INFO] [stdout] 24 | |             _ => Ok(ast.clone()),
[INFO] [stdout] 25 | |         },
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, eval::Error>, AstNode>
[INFO] [stdout]   --> src/arith/eval.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |         AstNode::IsZero(t) => match eval(t)? {
[INFO] [stdout]    |                                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |         AstNode::IsZero(t) => match eval(t)? {
[INFO] [stdout]    |                                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |         AstNode::IsZero(t) => match eval(t)? {
[INFO] [stdout]    |                                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |             AstNode::Zero => Ok(AstNode::True),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:23:33
[INFO] [stdout]    |
[INFO] [stdout] 23 |             AstNode::Succ(_) => Ok(AstNode::False),
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |             _ => Ok(ast.clone()),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 |         _ => Ok(ast.clone()),
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tapl` (lib test) due to 29 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:7:54
[INFO] [stdout]    |
[INFO] [stdout]  7 |   pub fn eval(ast: &AstNode) -> Result<AstNode, Error> {
[INFO] [stdout]    |  ______________________________________________________^
[INFO] [stdout]  8 | |     match ast {
[INFO] [stdout]  9 | |         AstNode::IfThenElse(t1, t2, t3) => match eval(t1)? {
[INFO] [stdout] 10 | |             AstNode::True => eval(t2),
[INFO] [stdout] ...  |
[INFO] [stdout] 28 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | /     match ast {
[INFO] [stdout]  9 | |         AstNode::IfThenElse(t1, t2, t3) => match eval(t1)? {
[INFO] [stdout] 10 | |             AstNode::True => eval(t2),
[INFO] [stdout] 11 | |             AstNode::False => eval(t3),
[INFO] [stdout] ...  |
[INFO] [stdout] 26 | |         _ => Ok(ast.clone()),
[INFO] [stdout] 27 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:9:44
[INFO] [stdout]    |
[INFO] [stdout]  9 |           AstNode::IfThenElse(t1, t2, t3) => match eval(t1)? {
[INFO] [stdout]    |  ____________________________________________^
[INFO] [stdout] 10 | |             AstNode::True => eval(t2),
[INFO] [stdout] 11 | |             AstNode::False => eval(t3),
[INFO] [stdout] 12 | |             _ => Ok(ast.clone()),
[INFO] [stdout] 13 | |         },
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, eval::Error>, AstNode>
[INFO] [stdout]  --> src/arith/eval.rs:9:50
[INFO] [stdout]   |
[INFO] [stdout] 9 |         AstNode::IfThenElse(t1, t2, t3) => match eval(t1)? {
[INFO] [stdout]   |                                                  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]  --> src/arith/eval.rs:9:50
[INFO] [stdout]   |
[INFO] [stdout] 9 |         AstNode::IfThenElse(t1, t2, t3) => match eval(t1)? {
[INFO] [stdout]   |                                                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]  --> src/arith/eval.rs:9:50
[INFO] [stdout]   |
[INFO] [stdout] 9 |         AstNode::IfThenElse(t1, t2, t3) => match eval(t1)? {
[INFO] [stdout]   |                                                  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:10:30
[INFO] [stdout]    |
[INFO] [stdout] 10 |             AstNode::True => eval(t2),
[INFO] [stdout]    |                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:11:31
[INFO] [stdout]    |
[INFO] [stdout] 11 |             AstNode::False => eval(t3),
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 |             _ => Ok(ast.clone()),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:14:26
[INFO] [stdout]    |
[INFO] [stdout] 14 |         AstNode::Zero => Ok(AstNode::Zero),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:15:29
[INFO] [stdout]    |
[INFO] [stdout] 15 |         AstNode::Succ(t) => Ok(AstNode::Succ(Box::new(eval(t)?))),
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, eval::Error>, AstNode>
[INFO] [stdout]   --> src/arith/eval.rs:15:55
[INFO] [stdout]    |
[INFO] [stdout] 15 |         AstNode::Succ(t) => Ok(AstNode::Succ(Box::new(eval(t)?))),
[INFO] [stdout]    |                                                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:15:55
[INFO] [stdout]    |
[INFO] [stdout] 15 |         AstNode::Succ(t) => Ok(AstNode::Succ(Box::new(eval(t)?))),
[INFO] [stdout]    |                                                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:15:55
[INFO] [stdout]    |
[INFO] [stdout] 15 |         AstNode::Succ(t) => Ok(AstNode::Succ(Box::new(eval(t)?))),
[INFO] [stdout]    |                                                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 |           AstNode::Pred(t) => match eval(t)? {
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 17 | |             AstNode::Zero => Ok(AstNode::Zero),
[INFO] [stdout] 18 | |             AstNode::Succ(t) => Ok(*t),
[INFO] [stdout] 19 | |             _ => Ok(ast.clone()),
[INFO] [stdout] 20 | |         },
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, eval::Error>, AstNode>
[INFO] [stdout]   --> src/arith/eval.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 |         AstNode::Pred(t) => match eval(t)? {
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 |         AstNode::Pred(t) => match eval(t)? {
[INFO] [stdout]    |                                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 |         AstNode::Pred(t) => match eval(t)? {
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:17:30
[INFO] [stdout]    |
[INFO] [stdout] 17 |             AstNode::Zero => Ok(AstNode::Zero),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:18:33
[INFO] [stdout]    |
[INFO] [stdout] 18 |             AstNode::Succ(t) => Ok(*t),
[INFO] [stdout]    |                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:19:18
[INFO] [stdout]    |
[INFO] [stdout] 19 |             _ => Ok(ast.clone()),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:21:31
[INFO] [stdout]    |
[INFO] [stdout] 21 |           AstNode::IsZero(t) => match eval(t)? {
[INFO] [stdout]    |  _______________________________^
[INFO] [stdout] 22 | |             AstNode::Zero => Ok(AstNode::True),
[INFO] [stdout] 23 | |             AstNode::Succ(_) => Ok(AstNode::False),
[INFO] [stdout] 24 | |             _ => Ok(ast.clone()),
[INFO] [stdout] 25 | |         },
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, eval::Error>, AstNode>
[INFO] [stdout]   --> src/arith/eval.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |         AstNode::IsZero(t) => match eval(t)? {
[INFO] [stdout]    |                                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |         AstNode::IsZero(t) => match eval(t)? {
[INFO] [stdout]    |                                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |         AstNode::IsZero(t) => match eval(t)? {
[INFO] [stdout]    |                                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |             AstNode::Zero => Ok(AstNode::True),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:23:33
[INFO] [stdout]    |
[INFO] [stdout] 23 |             AstNode::Succ(_) => Ok(AstNode::False),
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |             _ => Ok(ast.clone()),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AstNode, eval::Error>
[INFO] [stdout]   --> src/arith/eval.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 |         _ => Ok(ast.clone()),
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tapl` (lib) due to 29 previous errors
[INFO] running `Command { std: "docker" "inspect" "bac052525317cbb37f0034c3b3cd619e124b54c0e551d830ea695763c7a28a7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bac052525317cbb37f0034c3b3cd619e124b54c0e551d830ea695763c7a28a7c", kill_on_drop: false }`
[INFO] [stdout] bac052525317cbb37f0034c3b3cd619e124b54c0e551d830ea695763c7a28a7c
