[INFO] cloning repository https://github.com/bsbgreenfield/boop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bsbgreenfield/boop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbsbgreenfield%2Fboop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbsbgreenfield%2Fboop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 56070fd849e320092dd1d1a3b9ff5d388524cafa
[INFO] building bsbgreenfield/boop 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%2Fbsbgreenfield%2Fboop" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bsbgreenfield/boop 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/bsbgreenfield/boop
[INFO] finished tweaking git repo https://github.com/bsbgreenfield/boop
[INFO] tweaked toml for git repo https://github.com/bsbgreenfield/boop written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bsbgreenfield/boop 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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 6d0d69431fcebac41ce8b33f12bc5879d3379a99fda4ffb49a2ea3c5549b2322
[INFO] running `Command { std: "docker" "start" "-a" "6d0d69431fcebac41ce8b33f12bc5879d3379a99fda4ffb49a2ea3c5549b2322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d0d69431fcebac41ce8b33f12bc5879d3379a99fda4ffb49a2ea3c5549b2322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d0d69431fcebac41ce8b33f12bc5879d3379a99fda4ffb49a2ea3c5549b2322", kill_on_drop: false }`
[INFO] [stdout] 6d0d69431fcebac41ce8b33f12bc5879d3379a99fda4ffb49a2ea3c5549b2322
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a4414b2620da996947315ad2eb5a4c38cccda2b5de422d2da1148b1243e79972
[INFO] running `Command { std: "docker" "start" "-a" "a4414b2620da996947315ad2eb5a4c38cccda2b5de422d2da1148b1243e79972", kill_on_drop: false }`
[INFO] [stderr]    Compiling Boop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Operations::*`
[INFO] [stdout]  --> src/compiler/test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use Operations::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Write`
[INFO] [stdout]  --> src/compiler/test.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `compiler_main::*`
[INFO] [stdout]    --> src/compiler/mod.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub use compiler_main::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `expression::*`
[INFO] [stdout]    --> src/compiler/mod.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 | pub use expression::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::object::ObjFunction`
[INFO] [stdout]  --> src/vm.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::object::ObjFunction;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `compiler::VarDecResult` is more private than the item `compiler_main::<impl compiler::Compiler<'a>>::variable_declaration`
[INFO] [stdout]    --> src/compiler/compiler_main.rs:481:5
[INFO] [stdout]     |
[INFO] [stdout] 481 |     pub fn variable_declaration(&mut self) -> VarDecResult {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `compiler_main::<impl compiler::Compiler<'a>>::variable_declaration` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `compiler::VarDecResult` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/compiler/mod.rs:53:1
[INFO] [stdout]     |
[INFO] [stdout] 53  | enum VarDecResult {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `compiler::Precedence` is more private than the item `compiler::compiler_functions::prec_of`
[INFO] [stdout]   --> src/compiler/compiler_functions.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout] 3  | pub fn prec_of(operation: &Operations) -> Precedence {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `compiler::compiler_functions::prec_of` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `compiler::Precedence` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/compiler/mod.rs:59:1
[INFO] [stdout]    |
[INFO] [stdout] 59 | enum Precedence {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `types` is never read
[INFO] [stdout]   --> src/compiler/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Compiler<'a> {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     types: HashSet<String>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `PrecGrouping` is never constructed
[INFO] [stdout]   --> src/compiler/mod.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | enum Precedence {
[INFO] [stdout]    |      ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 71 |     PrecGrouping,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Precedence` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new_sized` and `new_unsized` are never used
[INFO] [stdout]   --> src/type.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl DataType {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 8  |     pub fn new_sized(name: &str) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub fn new_unsized(name: &str) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `BoopError` is never constructed
[INFO] [stdout]   --> src/vm.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum RuntimeError {
[INFO] [stdout]    |          ------------ variant in this enum
[INFO] [stdout] 11 |     BoopError,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `code_text` is never read
[INFO] [stdout]   --> src/vm.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Vm<'a> {
[INFO] [stdout]    |            -- field in this struct
[INFO] [stdout] 20 |     code_text: &'a String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `ObjString` should have a snake case name
[INFO] [stdout]   --> src/object.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |             ObjString => ObjType::ObjStringType,
[INFO] [stdout]    |             ^^^^^^^^^ help: convert the identifier to snake case: `obj_string`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `ObjBobj` should have a snake case name
[INFO] [stdout]   --> src/object.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |             ObjBobj => ObjType::ObjBobjType,
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case: `obj_bobj`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "a4414b2620da996947315ad2eb5a4c38cccda2b5de422d2da1148b1243e79972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4414b2620da996947315ad2eb5a4c38cccda2b5de422d2da1148b1243e79972", kill_on_drop: false }`
[INFO] [stdout] a4414b2620da996947315ad2eb5a4c38cccda2b5de422d2da1148b1243e79972
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 1c688f07eadbdfb4570562a73eb4e8e292e6b3a76c882d2c6f82c433abfc682e
[INFO] running `Command { std: "docker" "start" "-a" "1c688f07eadbdfb4570562a73eb4e8e292e6b3a76c882d2c6f82c433abfc682e", kill_on_drop: false }`
[INFO] [stderr]    Compiling Boop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `compiler_main::*`
[INFO] [stdout]    --> src/compiler/mod.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub use compiler_main::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `expression::*`
[INFO] [stdout]    --> src/compiler/mod.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 | pub use expression::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::object::ObjFunction`
[INFO] [stdout]  --> src/vm.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::object::ObjFunction;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `compiler::VarDecResult` is more private than the item `compiler_main::<impl compiler::Compiler<'a>>::variable_declaration`
[INFO] [stdout]    --> src/compiler/compiler_main.rs:481:5
[INFO] [stdout]     |
[INFO] [stdout] 481 |     pub fn variable_declaration(&mut self) -> VarDecResult {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ method `compiler_main::<impl compiler::Compiler<'a>>::variable_declaration` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `compiler::VarDecResult` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/compiler/mod.rs:53:1
[INFO] [stdout]     |
[INFO] [stdout] 53  | enum VarDecResult {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `compiler::Precedence` is more private than the item `compiler::compiler_functions::prec_of`
[INFO] [stdout]   --> src/compiler/compiler_functions.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout] 3  | pub fn prec_of(operation: &Operations) -> Precedence {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `compiler::compiler_functions::prec_of` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `compiler::Precedence` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/compiler/mod.rs:59:1
[INFO] [stdout]    |
[INFO] [stdout] 59 | enum Precedence {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `types` is never read
[INFO] [stdout]   --> src/compiler/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Compiler<'a> {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     types: HashSet<String>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `PrecGrouping` is never constructed
[INFO] [stdout]   --> src/compiler/mod.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | enum Precedence {
[INFO] [stdout]    |      ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 71 |     PrecGrouping,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Precedence` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new_sized` and `new_unsized` are never used
[INFO] [stdout]   --> src/type.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl DataType {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 8  |     pub fn new_sized(name: &str) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub fn new_unsized(name: &str) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `BoopError` is never constructed
[INFO] [stdout]   --> src/vm.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum RuntimeError {
[INFO] [stdout]    |          ------------ variant in this enum
[INFO] [stdout] 11 |     BoopError,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `code_text` is never read
[INFO] [stdout]   --> src/vm.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Vm<'a> {
[INFO] [stdout]    |            -- field in this struct
[INFO] [stdout] 20 |     code_text: &'a String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `ObjString` should have a snake case name
[INFO] [stdout]   --> src/object.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |             ObjString => ObjType::ObjStringType,
[INFO] [stdout]    |             ^^^^^^^^^ help: convert the identifier to snake case: `obj_string`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `ObjBobj` should have a snake case name
[INFO] [stdout]   --> src/object.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |             ObjBobj => ObjType::ObjBobjType,
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case: `obj_bobj`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "1c688f07eadbdfb4570562a73eb4e8e292e6b3a76c882d2c6f82c433abfc682e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c688f07eadbdfb4570562a73eb4e8e292e6b3a76c882d2c6f82c433abfc682e", kill_on_drop: false }`
[INFO] [stdout] 1c688f07eadbdfb4570562a73eb4e8e292e6b3a76c882d2c6f82c433abfc682e