[INFO] cloning repository https://github.com/lhvy/yoha
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lhvy/yoha" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flhvy%2Fyoha", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flhvy%2Fyoha'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a11f7126d5082724b14b61d7f071edfcab041b4a
[INFO] checking lhvy/yoha against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flhvy%2Fyoha" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lhvy/yoha on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lhvy/yoha
[INFO] finished tweaking git repo https://github.com/lhvy/yoha
[INFO] tweaked toml for git repo https://github.com/lhvy/yoha written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/lhvy/yoha already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7643f49ba3457ca3d698d1869f94b316e45e955e929a351300ebe0312669a5d
[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" "a7643f49ba3457ca3d698d1869f94b316e45e955e929a351300ebe0312669a5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7643f49ba3457ca3d698d1869f94b316e45e955e929a351300ebe0312669a5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7643f49ba3457ca3d698d1869f94b316e45e955e929a351300ebe0312669a5d", kill_on_drop: false }`
[INFO] [stdout] a7643f49ba3457ca3d698d1869f94b316e45e955e929a351300ebe0312669a5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a0a73a53f1fd7143f8d1088ac0b6cc405157352aaf064a3ad068531e52415ea
[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" "0a0a73a53f1fd7143f8d1088ac0b6cc405157352aaf064a3ad068531e52415ea", kill_on_drop: false }`
[INFO] [stderr]     Checking yoha v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `vars`
[INFO] [stdout]  --> src/eval.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     vars: HashMap<String, Value>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Str`
[INFO] [stdout]   --> src/eval.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Str(String),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Number`
[INFO] [stdout]   --> src/eval.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Number(i64),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eval_expr`
[INFO] [stdout]   --> src/eval.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn eval_expr(&self, expr: Expr) -> Value {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eval_var_def`
[INFO] [stdout]   --> src/eval.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn eval_var_def(&mut self, var_def: VarDef) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Number`
[INFO] [stdout]  --> src/parser/expr.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Number(Number),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Str`
[INFO] [stdout]  --> src/parser/expr.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Str(Str),
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Var`
[INFO] [stdout]  --> src/parser/expr.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Var(Var),
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/parser/expr.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub(crate) fn new(s: &str) -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/parser/number.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub(crate) fn new(s: &str) -> Self {
[INFO] [stdout]   |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/parser/str.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub(crate) fn new(s: &str) -> Self {
[INFO] [stdout]   |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/parser/var.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub(crate) fn new(s: &str) -> Self {
[INFO] [stdout]   |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/parser/var_def.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub(crate) fn new(s: &str) -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "0a0a73a53f1fd7143f8d1088ac0b6cc405157352aaf064a3ad068531e52415ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a0a73a53f1fd7143f8d1088ac0b6cc405157352aaf064a3ad068531e52415ea", kill_on_drop: false }`
[INFO] [stdout] 0a0a73a53f1fd7143f8d1088ac0b6cc405157352aaf064a3ad068531e52415ea