[INFO] cloning repository https://github.com/Furetur/jex_vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Furetur/jex_vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFuretur%2Fjex_vm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFuretur%2Fjex_vm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de356aaff4768dae4f1b3f9e99020cdf8ec34e1b
[INFO] checking Furetur/jex_vm 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%2FFuretur%2Fjex_vm" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Furetur/jex_vm
[INFO] finished tweaking git repo https://github.com/Furetur/jex_vm
[INFO] tweaked toml for git repo https://github.com/Furetur/jex_vm written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Furetur/jex_vm 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/Furetur/jex_vm 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e254989e4d73d8b05074af767880d19c0d282160fb368d96f93c5bcd7af636fe
[INFO] running `Command { std: "docker" "start" "-a" "e254989e4d73d8b05074af767880d19c0d282160fb368d96f93c5bcd7af636fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e254989e4d73d8b05074af767880d19c0d282160fb368d96f93c5bcd7af636fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e254989e4d73d8b05074af767880d19c0d282160fb368d96f93c5bcd7af636fe", kill_on_drop: false }`
[INFO] [stdout] e254989e4d73d8b05074af767880d19c0d282160fb368d96f93c5bcd7af636fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f56552f9bab5dfed596f0276849a085671abcd2fdf3da80962a1948078be3fd1
[INFO] running `Command { std: "docker" "start" "-a" "f56552f9bab5dfed596f0276849a085671abcd2fdf3da80962a1948078be3fd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking os_str_bytes v2.4.0
[INFO] [stderr]     Checking scanrs v0.2.1
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking extendable_vm v0.4.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking jex_vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `UnaryOperatorNotDefined`
[INFO] [stdout]  --> src/instructions/objects.rs:2:69
[INFO] [stdout]   |
[INFO] [stdout] 2 |     ExpectedInstructionArgument, FieldNotFound, NotObjectException, UnaryOperatorNotDefined,
[INFO] [stdout]   |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> src/values/values.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cell::{Cell, RefCell};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `UnaryOperatorNotDefined`
[INFO] [stdout]  --> src/instructions/objects.rs:2:69
[INFO] [stdout]   |
[INFO] [stdout] 2 |     ExpectedInstructionArgument, FieldNotFound, NotObjectException, UnaryOperatorNotDefined,
[INFO] [stdout]   |                                                                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> src/values/values.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cell::{Cell, RefCell};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:14:32
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn build_jex_machine(code: &Code<JexConstant>) -> JexMachine {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn build_jex_machine(code: &Code<JexConstant>) -> JexMachine<'_> {
[INFO] [stdout]    |                                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:14:32
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn build_jex_machine(code: &Code<JexConstant>) -> JexMachine {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn build_jex_machine(code: &Code<JexConstant>) -> JexMachine<'_> {
[INFO] [stdout]    |                                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     #[clap(about = "Path to file that contains bytecode")]
[INFO] [stdout] 14 | |     input_file: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jex_vm` (bin "jex_vm" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: function `run_chunk` is never used
[INFO] [stdout]   --> tests/run/mod.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn run_chunk(chunk: TestChunk) -> Option<JexValue> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_instructions` is never used
[INFO] [stdout]   --> tests/run/mod.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_instructions(instructions: Vec<TestInstruction>) -> Option<JexValue> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> tests/run/code.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl TestInstruction {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn new(op_code: JexOpCode) -> TestInstruction {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_instructions` is never used
[INFO] [stdout]   --> tests/run/mod.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_instructions(instructions: Vec<TestInstruction>) -> Option<JexValue> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> tests/run/code.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl TestInstruction {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn new(op_code: JexOpCode) -> TestInstruction {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_instructions` is never used
[INFO] [stdout]   --> tests/run/mod.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_instructions(instructions: Vec<TestInstruction>) -> Option<JexValue> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     #[clap(about = "Path to file that contains bytecode")]
[INFO] [stdout] 14 | |     input_file: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_instructions` is never used
[INFO] [stdout]   --> tests/run/mod.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_instructions(instructions: Vec<TestInstruction>) -> Option<JexValue> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jex_vm` (bin "jex_vm") due to 1 previous error
[INFO] [stdout] warning: function `run_instructions` is never used
[INFO] [stdout]   --> tests/run/mod.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn run_instructions(instructions: Vec<TestInstruction>) -> Option<JexValue> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f56552f9bab5dfed596f0276849a085671abcd2fdf3da80962a1948078be3fd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f56552f9bab5dfed596f0276849a085671abcd2fdf3da80962a1948078be3fd1", kill_on_drop: false }`
[INFO] [stdout] f56552f9bab5dfed596f0276849a085671abcd2fdf3da80962a1948078be3fd1
