[INFO] cloning repository https://github.com/WangKhan/231hw6
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WangKhan/231hw6" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWangKhan%2F231hw6", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWangKhan%2F231hw6'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e3cb0736c448f0e1253a0c5f210d95dd9db5b61
[INFO] checking WangKhan/231hw6 against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWangKhan%2F231hw6" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/WangKhan/231hw6
[INFO] finished tweaking git repo https://github.com/WangKhan/231hw6
[INFO] tweaked toml for git repo https://github.com/WangKhan/231hw6 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/WangKhan/231hw6 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/WangKhan/231hw6 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prettytable-rs v0.10.0
[INFO] [stderr]   Downloaded sexp v1.1.4
[INFO] [stderr]   Downloaded prettydiff v0.6.4
[INFO] [stderr]   Downloaded pad v0.1.6
[INFO] [stderr]   Downloaded rustix v0.37.14
[INFO] [stderr]   Downloaded linux-raw-sys v0.3.4
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbfe42a6b35f0b34264872fc361beeee58bf63130f6da7b9c9f8387e7f7db168
[INFO] running `Command { std: "docker" "start" "-a" "fbfe42a6b35f0b34264872fc361beeee58bf63130f6da7b9c9f8387e7f7db168", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbfe42a6b35f0b34264872fc361beeee58bf63130f6da7b9c9f8387e7f7db168", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbfe42a6b35f0b34264872fc361beeee58bf63130f6da7b9c9f8387e7f7db168", kill_on_drop: false }`
[INFO] [stdout] fbfe42a6b35f0b34264872fc361beeee58bf63130f6da7b9c9f8387e7f7db168
[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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5d45031feafd2784e773904302b86f8fb872c9b8791cad1c678ee0c7154dd12
[INFO] running `Command { std: "docker" "start" "-a" "c5d45031feafd2784e773904302b86f8fb872c9b8791cad1c678ee0c7154dd12", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling rustix v0.37.14
[INFO] [stderr]     Checking linux-raw-sys v0.3.4
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling im v15.1.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking encode_unicode v1.0.0
[INFO] [stderr]     Checking pad v0.1.6
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking sexp v1.1.4
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking sized-chunks v0.6.5
[INFO] [stderr]     Checking is-terminal v0.4.7
[INFO] [stderr]     Checking csv v1.2.1
[INFO] [stderr]     Checking diamondback v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:622:15
[INFO] [stdout]     |
[INFO] [stdout] 622 |           let mut align_offset;
[INFO] [stdout]     |               ----^^^^^^^^^^^^
[INFO] [stdout]     |               |
[INFO] [stdout]     |               help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack_offset`
[INFO] [stdout]    --> src/main.rs:528:17
[INFO] [stdout]     |
[INFO] [stdout] 528 |             let stack_offset = si * 8;
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack_offset`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `label` is never read
[INFO] [stdout]    --> src/main.rs:481:33
[INFO] [stdout]     |
[INFO] [stdout] 481 |                 let mut label = String::new();
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end_label` is never read
[INFO] [stdout]    --> src/main.rs:482:37
[INFO] [stdout]     |
[INFO] [stdout] 482 |                 let mut end_label = String::new();
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:971:15
[INFO] [stdout]     |
[INFO] [stdout] 971 |           let mut len = params.len() as i64;
[INFO] [stdout]     |               ----^^^
[INFO] [stdout]     |               |
[INFO] [stdout]     |               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/main.rs:970:42
[INFO] [stdout]     |
[INFO] [stdout] 970 |         Lang::Def(Def::Func(fun, params, expr)) => {
[INFO] [stdout]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]    --> src/main.rs:977:20
[INFO] [stdout]     |
[INFO] [stdout] 977 |         Lang::Expr(exp) => {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]     --> src/main.rs:1012:24
[INFO] [stdout]      |
[INFO] [stdout] 1012 |             Lang::Expr(exp) => {
[INFO] [stdout]      |                        ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1026:9
[INFO] [stdout]      |
[INFO] [stdout] 1026 |     let mut env: HashMap<String, i64> = HashMap::new();
[INFO] [stdout]      |         ----^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking prettytable-rs v0.10.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking prettydiff v0.6.4
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:622:15
[INFO] [stdout]     |
[INFO] [stdout] 622 |           let mut align_offset;
[INFO] [stdout]     |               ----^^^^^^^^^^^^
[INFO] [stdout]     |               |
[INFO] [stdout]     |               help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack_offset`
[INFO] [stdout]    --> src/main.rs:528:17
[INFO] [stdout]     |
[INFO] [stdout] 528 |             let stack_offset = si * 8;
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack_offset`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `label` is never read
[INFO] [stdout]    --> src/main.rs:481:33
[INFO] [stdout]     |
[INFO] [stdout] 481 |                 let mut label = String::new();
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end_label` is never read
[INFO] [stdout]    --> src/main.rs:482:37
[INFO] [stdout]     |
[INFO] [stdout] 482 |                 let mut end_label = String::new();
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:971:15
[INFO] [stdout]     |
[INFO] [stdout] 971 |           let mut len = params.len() as i64;
[INFO] [stdout]     |               ----^^^
[INFO] [stdout]     |               |
[INFO] [stdout]     |               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/main.rs:970:42
[INFO] [stdout]     |
[INFO] [stdout] 970 |         Lang::Def(Def::Func(fun, params, expr)) => {
[INFO] [stdout]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]    --> src/main.rs:977:20
[INFO] [stdout]     |
[INFO] [stdout] 977 |         Lang::Expr(exp) => {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]     --> src/main.rs:1012:24
[INFO] [stdout]      |
[INFO] [stdout] 1012 |             Lang::Expr(exp) => {
[INFO] [stdout]      |                        ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1026:9
[INFO] [stdout]      |
[INFO] [stdout] 1026 |     let mut env: HashMap<String, i64> = HashMap::new();
[INFO] [stdout]      |         ----^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.32s
[INFO] running `Command { std: "docker" "inspect" "c5d45031feafd2784e773904302b86f8fb872c9b8791cad1c678ee0c7154dd12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5d45031feafd2784e773904302b86f8fb872c9b8791cad1c678ee0c7154dd12", kill_on_drop: false }`
[INFO] [stdout] c5d45031feafd2784e773904302b86f8fb872c9b8791cad1c678ee0c7154dd12
