[INFO] cloning repository https://github.com/gbrls/rust-microc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gbrls/rust-microc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgbrls%2Frust-microc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgbrls%2Frust-microc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a6c292fce20e61940fcc01959fd356fb18f01ecf
[INFO] checking gbrls/rust-microc against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgbrls%2Frust-microc" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gbrls/rust-microc on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gbrls/rust-microc
[INFO] finished tweaking git repo https://github.com/gbrls/rust-microc
[INFO] tweaked toml for git repo https://github.com/gbrls/rust-microc written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/gbrls/rust-microc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossterm_winapi v0.6.2
[INFO] [stderr]   Downloaded radium v0.5.3
[INFO] [stderr]   Downloaded tap v1.0.0
[INFO] [stderr]   Downloaded signal-hook v0.1.17
[INFO] [stderr]   Downloaded funty v1.1.0
[INFO] [stderr]   Downloaded crossterm v0.16.0
[INFO] [stderr]   Downloaded bitvec v0.19.4
[INFO] [stderr]   Downloaded colour v0.5.0
[INFO] [stderr]   Downloaded wyz v0.2.0
[INFO] [stderr]   Downloaded strum v0.20.0
[INFO] [stderr]   Downloaded strum_macros v0.20.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dd935617b0ba5c51bd14f4e8c29c2963a6c03f5bcba3228d5ea55564da673400
[INFO] running `Command { std: "docker" "start" "-a" "dd935617b0ba5c51bd14f4e8c29c2963a6c03f5bcba3228d5ea55564da673400", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd935617b0ba5c51bd14f4e8c29c2963a6c03f5bcba3228d5ea55564da673400", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd935617b0ba5c51bd14f4e8c29c2963a6c03f5bcba3228d5ea55564da673400", kill_on_drop: false }`
[INFO] [stdout] dd935617b0ba5c51bd14f4e8c29c2963a6c03f5bcba3228d5ea55564da673400
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "-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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11432926e592823c90aac04affec8d0e2328a27f72338e71ed2ad6d3c0f1a804
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "11432926e592823c90aac04affec8d0e2328a27f72338e71ed2ad6d3c0f1a804", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking strum v0.20.0
[INFO] [stderr]    Compiling nom v6.0.1
[INFO] [stderr]     Checking libc v0.2.81
[INFO] [stderr]     Checking lexical-core v0.7.4
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking bitvec v0.19.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking crossterm v0.16.0
[INFO] [stderr]     Checking colour v0.5.0
[INFO] [stderr]    Compiling strum_macros v0.20.1
[INFO] [stderr]     Checking tinyc-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::ast::*`
[INFO] [stdout]  --> src/analysis.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/analysis.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parser`
[INFO] [stdout]  --> src/compiler.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::parser;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `convert::TryInto`
[INFO] [stdout]  --> src/compiler.rs:8:33
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::{collections::HashMap, convert::TryInto};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ast::*`
[INFO] [stdout]  --> src/analysis.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/analysis.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `convert::TryInto`
[INFO] [stdout]  --> src/compiler.rs:8:33
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::{collections::HashMap, convert::TryInto};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/compiler.rs:437:21
[INFO] [stdout]     |
[INFO] [stdout] 437 |                 let t = self.ast_to_ir(first)?;
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/output.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let output = Command::new("rm")
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eval`
[INFO] [stdout]   --> src/ast.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn eval(&self) -> i32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/compiler.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new() -> StackFrame {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_label`
[INFO] [stdout]    --> src/compiler.rs:244:8
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn next_label(&self) -> u32 {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last_label`
[INFO] [stdout]    --> src/compiler.rs:248:8
[INFO] [stdout]     |
[INFO] [stdout] 248 |     fn last_label(&self) -> u32 {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_and_run`
[INFO] [stdout]   --> src/output.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn build_and_run(program: &str) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `delete`
[INFO] [stdout]   --> src/output.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn delete(fname: &str) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/compiler.rs:437:21
[INFO] [stdout]     |
[INFO] [stdout] 437 |                 let t = self.ast_to_ir(first)?;
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/output.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let output = Command::new("rm")
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/compiler.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new() -> StackFrame {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_label`
[INFO] [stdout]    --> src/compiler.rs:244:8
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn next_label(&self) -> u32 {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `last_label`
[INFO] [stdout]    --> src/compiler.rs:248:8
[INFO] [stdout]     |
[INFO] [stdout] 248 |     fn last_label(&self) -> u32 {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_newline`
[INFO] [stdout]    --> src/parser.rs:404:8
[INFO] [stdout]     |
[INFO] [stdout] 404 |     fn test_newline(i: &str) -> IResult<&str, Vec<AST>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.08s
[INFO] running `Command { std: "docker" "inspect" "11432926e592823c90aac04affec8d0e2328a27f72338e71ed2ad6d3c0f1a804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11432926e592823c90aac04affec8d0e2328a27f72338e71ed2ad6d3c0f1a804", kill_on_drop: false }`
[INFO] [stdout] 11432926e592823c90aac04affec8d0e2328a27f72338e71ed2ad6d3c0f1a804