[INFO] cloning repository https://github.com/ericrobolson/GoForthAndProsper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ericrobolson/GoForthAndProsper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fericrobolson%2FGoForthAndProsper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fericrobolson%2FGoForthAndProsper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b53085cb1ea67ec306fa31b96de636f32aa4405
[INFO] building ericrobolson/GoForthAndProsper against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fericrobolson%2FGoForthAndProsper" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ericrobolson/GoForthAndProsper on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ericrobolson/GoForthAndProsper
[INFO] finished tweaking git repo https://github.com/ericrobolson/GoForthAndProsper
[INFO] tweaked toml for git repo https://github.com/ericrobolson/GoForthAndProsper written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ericrobolson/GoForthAndProsper 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 083206051cea8243c7a5490163e11f99a210485dea29036a1aacffdd8d0d6bb4
[INFO] running `Command { std: "docker" "start" "-a" "083206051cea8243c7a5490163e11f99a210485dea29036a1aacffdd8d0d6bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "083206051cea8243c7a5490163e11f99a210485dea29036a1aacffdd8d0d6bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "083206051cea8243c7a5490163e11f99a210485dea29036a1aacffdd8d0d6bb4", kill_on_drop: false }`
[INFO] [stdout] 083206051cea8243c7a5490163e11f99a210485dea29036a1aacffdd8d0d6bb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c906aa52106c7185549504e603f009b69384552472fd8b43d4b988a59436518f
[INFO] running `Command { std: "docker" "start" "-a" "c906aa52106c7185549504e603f009b69384552472fd8b43d4b988a59436518f", kill_on_drop: false }`
[INFO] [stderr]    Compiling valkyrie v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/context.rs:146:29
[INFO] [stdout]     |
[INFO] [stdout] 145 | ...                   todo!("There's a bug where yielding doesn't resume. It just chops off other stuff.");
[INFO] [stdout]     |                       ------------------------------------------------------------------------------------ any code following this expression is unreachable
[INFO] [stdout] 146 | ...                   return Ok(Return::Yielding);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]    --> src/context.rs:230:42
[INFO] [stdout]     |
[INFO] [stdout] 230 |         builtin_word!(self : "does>" => |context| {
[INFO] [stdout]     |                                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]    --> src/context.rs:234:43
[INFO] [stdout]     |
[INFO] [stdout] 234 |         builtin_word!(self : "create" => |context| {
[INFO] [stdout]     |                                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/main.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 19 |             Ok(size) => match forth.eval(input) {
[INFO] [stdout]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Compiling` is never constructed
[INFO] [stdout]  --> src/context.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Mode {
[INFO] [stdout]   |          ---- variant in this enum
[INFO] [stdout] 6 |     Interpreting,
[INFO] [stdout] 7 |     Compiling,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Mode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Custom` is never constructed
[INFO] [stdout]   --> src/context.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub enum Word {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 59 |     Custom {
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push`, `pop`, and `dictionary` are never used
[INFO] [stdout]    --> src/context.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 90  | impl Context {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 115 |     pub fn push(&mut self, data: Datum) -> Result<(), stack::StackErr> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 120 |     pub fn pop(&mut self) -> Result<Datum, stack::StackErr> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |     pub fn dictionary(&self) -> &[(Option<Id>, Rc<Word>)] {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "c906aa52106c7185549504e603f009b69384552472fd8b43d4b988a59436518f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c906aa52106c7185549504e603f009b69384552472fd8b43d4b988a59436518f", kill_on_drop: false }`
[INFO] [stdout] c906aa52106c7185549504e603f009b69384552472fd8b43d4b988a59436518f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f41e0a66690b73626fc07cf97aafbe50749baaeebe0c0819f1c55732ff1e0ebb
[INFO] running `Command { std: "docker" "start" "-a" "f41e0a66690b73626fc07cf97aafbe50749baaeebe0c0819f1c55732ff1e0ebb", kill_on_drop: false }`
[INFO] [stderr]    Compiling valkyrie v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/context.rs:146:29
[INFO] [stdout]     |
[INFO] [stdout] 145 | ...                   todo!("There's a bug where yielding doesn't resume. It just chops off other stuff.");
[INFO] [stdout]     |                       ------------------------------------------------------------------------------------ any code following this expression is unreachable
[INFO] [stdout] 146 | ...                   return Ok(Return::Yielding);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]    --> src/context.rs:230:42
[INFO] [stdout]     |
[INFO] [stdout] 230 |         builtin_word!(self : "does>" => |context| {
[INFO] [stdout]     |                                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `context`
[INFO] [stdout]    --> src/context.rs:234:43
[INFO] [stdout]     |
[INFO] [stdout] 234 |         builtin_word!(self : "create" => |context| {
[INFO] [stdout]     |                                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/stack.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let result = stack.pop();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/stack.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |         let result = stack.pop();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/main.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 19 |             Ok(size) => match forth.eval(input) {
[INFO] [stdout]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Compiling` is never constructed
[INFO] [stdout]  --> src/context.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Mode {
[INFO] [stdout]   |          ---- variant in this enum
[INFO] [stdout] 6 |     Interpreting,
[INFO] [stdout] 7 |     Compiling,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Mode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Custom` is never constructed
[INFO] [stdout]   --> src/context.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub enum Word {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 59 |     Custom {
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push`, `pop`, and `dictionary` are never used
[INFO] [stdout]    --> src/context.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 90  | impl Context {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 115 |     pub fn push(&mut self, data: Datum) -> Result<(), stack::StackErr> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 120 |     pub fn pop(&mut self) -> Result<Datum, stack::StackErr> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |     pub fn dictionary(&self) -> &[(Option<Id>, Rc<Word>)] {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_DUP_duplicates_top_of_stack` should have a snake case name
[INFO] [stdout]    --> src/context.rs:402:8
[INFO] [stdout]     |
[INFO] [stdout] 402 |     fn test_DUP_duplicates_top_of_stack() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `test_dup_duplicates_top_of_stack`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/dictionary.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         d.insert(Some(2), 3);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let _ = d.insert(Some(2), 3);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/dictionary.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         d.insert(Some(4), 5);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 177 |         let _ = d.insert(Some(4), 5);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "f41e0a66690b73626fc07cf97aafbe50749baaeebe0c0819f1c55732ff1e0ebb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f41e0a66690b73626fc07cf97aafbe50749baaeebe0c0819f1c55732ff1e0ebb", kill_on_drop: false }`
[INFO] [stdout] f41e0a66690b73626fc07cf97aafbe50749baaeebe0c0819f1c55732ff1e0ebb