[INFO] cloning repository https://github.com/CaffeineDuck/jBREAD
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CaffeineDuck/jBREAD" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCaffeineDuck%2FjBREAD", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCaffeineDuck%2FjBREAD'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 234c64a9a3d207f4e013fc7b109c2b982dc800fe
[INFO] building CaffeineDuck/jBREAD 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%2FCaffeineDuck%2FjBREAD" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CaffeineDuck/jBREAD 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/CaffeineDuck/jBREAD
[INFO] finished tweaking git repo https://github.com/CaffeineDuck/jBREAD
[INFO] tweaked toml for git repo https://github.com/CaffeineDuck/jBREAD written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/CaffeineDuck/jBREAD 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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f08edb741990ac2389fba4f2bf9bdd1d17368f4a27e4bc2ced7c0628d1ad9713
[INFO] running `Command { std: "docker" "start" "-a" "f08edb741990ac2389fba4f2bf9bdd1d17368f4a27e4bc2ced7c0628d1ad9713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f08edb741990ac2389fba4f2bf9bdd1d17368f4a27e4bc2ced7c0628d1ad9713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f08edb741990ac2389fba4f2bf9bdd1d17368f4a27e4bc2ced7c0628d1ad9713", kill_on_drop: false }`
[INFO] [stdout] f08edb741990ac2389fba4f2bf9bdd1d17368f4a27e4bc2ced7c0628d1ad9713
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] c64199b4ba665102e35a53fe13207600c254a5d64a5735040fd5e408f464b865
[INFO] running `Command { std: "docker" "start" "-a" "c64199b4ba665102e35a53fe13207600c254a5d64a5735040fd5e408f464b865", kill_on_drop: false }`
[INFO] [stderr]    Compiling j_bread v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `generate_ast::*`
[INFO] [stdout]  --> src/tool/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use generate_ast::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `scanner::*`
[INFO] [stdout]   --> src/lib.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub use scanner::*;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_mut_refs` has been stable since 1.83.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_mut_refs)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:40:39
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn visit_expr_variable(&mut self, expr: &crate::ast::Variable) -> Self::Result {
[INFO] [stdout]    |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:44:37
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn visit_expr_assign(&mut self, expr: &crate::ast::Assign) -> Self::Result {
[INFO] [stdout]    |                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:52:41
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn visit_stmt_expression(&mut self, expr: &crate::ast::Expression) -> Self::Result {
[INFO] [stdout]    |                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:56:36
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn visit_stmt_print(&mut self, expr: &crate::ast::Print) -> Self::Result {
[INFO] [stdout]    |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:60:34
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn visit_stmt_var(&mut self, expr: &crate::ast::Var) -> Self::Result {
[INFO] [stdout]    |                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:64:36
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn visit_stmt_block(&mut self, expr: &crate::ast::Block) -> Self::Result {
[INFO] [stdout]    |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ParseTrait` is never used
[INFO] [stdout]   --> src/parser.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait ParseTrait {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `Command { std: "docker" "inspect" "c64199b4ba665102e35a53fe13207600c254a5d64a5735040fd5e408f464b865", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c64199b4ba665102e35a53fe13207600c254a5d64a5735040fd5e408f464b865", kill_on_drop: false }`
[INFO] [stdout] c64199b4ba665102e35a53fe13207600c254a5d64a5735040fd5e408f464b865
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] e7a29845834143506916cbdc3187f79e33ceca95bba5dd2e63c0fd49824cac14
[INFO] running `Command { std: "docker" "start" "-a" "e7a29845834143506916cbdc3187f79e33ceca95bba5dd2e63c0fd49824cac14", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `generate_ast::*`
[INFO] [stdout]  --> src/tool/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use generate_ast::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `scanner::*`
[INFO] [stdout]   --> src/lib.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub use scanner::*;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_mut_refs` has been stable since 1.83.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_mut_refs)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:40:39
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn visit_expr_variable(&mut self, expr: &crate::ast::Variable) -> Self::Result {
[INFO] [stdout]    |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:44:37
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn visit_expr_assign(&mut self, expr: &crate::ast::Assign) -> Self::Result {
[INFO] [stdout]    |                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:52:41
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn visit_stmt_expression(&mut self, expr: &crate::ast::Expression) -> Self::Result {
[INFO] [stdout]    |                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:56:36
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn visit_stmt_print(&mut self, expr: &crate::ast::Print) -> Self::Result {
[INFO] [stdout]    |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:60:34
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn visit_stmt_var(&mut self, expr: &crate::ast::Var) -> Self::Result {
[INFO] [stdout]    |                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:64:36
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn visit_stmt_block(&mut self, expr: &crate::ast::Block) -> Self::Result {
[INFO] [stdout]    |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ParseTrait` is never used
[INFO] [stdout]   --> src/parser.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait ParseTrait {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling j_bread v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `generate_ast::*`
[INFO] [stdout]  --> src/tool/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use generate_ast::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `scanner::*`
[INFO] [stdout]   --> src/lib.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub use scanner::*;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_mut_refs` has been stable since 1.83.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_mut_refs)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:40:39
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn visit_expr_variable(&mut self, expr: &crate::ast::Variable) -> Self::Result {
[INFO] [stdout]    |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:44:37
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn visit_expr_assign(&mut self, expr: &crate::ast::Assign) -> Self::Result {
[INFO] [stdout]    |                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:52:41
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn visit_stmt_expression(&mut self, expr: &crate::ast::Expression) -> Self::Result {
[INFO] [stdout]    |                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:56:36
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn visit_stmt_print(&mut self, expr: &crate::ast::Print) -> Self::Result {
[INFO] [stdout]    |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:60:34
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn visit_stmt_var(&mut self, expr: &crate::ast::Var) -> Self::Result {
[INFO] [stdout]    |                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/tool/print_ast.rs:64:36
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn visit_stmt_block(&mut self, expr: &crate::ast::Block) -> Self::Result {
[INFO] [stdout]    |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ParseTrait` is never used
[INFO] [stdout]   --> src/parser.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait ParseTrait {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "e7a29845834143506916cbdc3187f79e33ceca95bba5dd2e63c0fd49824cac14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7a29845834143506916cbdc3187f79e33ceca95bba5dd2e63c0fd49824cac14", kill_on_drop: false }`
[INFO] [stdout] e7a29845834143506916cbdc3187f79e33ceca95bba5dd2e63c0fd49824cac14