[INFO] cloning repository https://github.com/kunieone/silk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kunieone/silk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkunieone%2Fsilk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkunieone%2Fsilk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a3736597f46aad4c68857f07288485e45a994da8
[INFO] checking kunieone/silk against master#c756124775121dea0e640652c5ee3c89e3dd0eb4 for pr-154971-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkunieone%2Fsilk" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kunieone/silk
[INFO] finished tweaking git repo https://github.com/kunieone/silk
[INFO] tweaked toml for git repo https://github.com/kunieone/silk written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kunieone/silk on toolchain c756124775121dea0e640652c5ee3c89e3dd0eb4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kunieone/silk 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" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getrandom v0.2.8
[INFO] [stderr]   Downloaded aho-corasick v0.7.20
[INFO] [stderr]   Downloaded regex-syntax v0.6.28
[INFO] [stderr]   Downloaded regex v1.7.0
[INFO] [stderr]   Downloaded libc v0.2.139
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c371066e35debd248598f5afde9551aa9773e448fcf03d68645add9210f1f4a4
[INFO] running `Command { std: "docker" "start" "-a" "c371066e35debd248598f5afde9551aa9773e448fcf03d68645add9210f1f4a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c371066e35debd248598f5afde9551aa9773e448fcf03d68645add9210f1f4a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c371066e35debd248598f5afde9551aa9773e448fcf03d68645add9210f1f4a4", kill_on_drop: false }`
[INFO] [stdout] c371066e35debd248598f5afde9551aa9773e448fcf03d68645add9210f1f4a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+c756124775121dea0e640652c5ee3c89e3dd0eb4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebfc810162c4d44742550ba38cbf3ae1ac83266d3345e44c37732db32da03fc3
[INFO] running `Command { std: "docker" "start" "-a" "ebfc810162c4d44742550ba38cbf3ae1ac83266d3345e44c37732db32da03fc3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking regex v1.7.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking silk-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `str`
[INFO] [stdout]   --> src/rand.rs:32:14
[INFO] [stdout]    |
[INFO] [stdout] 32 | macro_rules! str {
[INFO] [stdout]    |              ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/rand.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let b = str!(data);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_expression` is never used
[INFO] [stdout]  --> src/parser.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn parse_expression(tokens: &[Token], pos: &mut usize) -> Result<Expr, ParserError> {
[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 `parse_term` is never used
[INFO] [stdout]   --> src/parser.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn parse_term(tokens: &[Token], pos: &mut usize) -> Result<Expr, ParserError> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_factor` is never used
[INFO] [stdout]   --> src/parser.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn parse_factor(tokens: &[Token], pos: &mut usize) -> Result<Expr, ParserError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RandomArray` is never constructed
[INFO] [stdout]  --> src/rand.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct RandomArray<'a, T: 'a> {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/rand.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl<'a, T: Clone> RandomArray<'a, T> {
[INFO] [stdout]    | ------------------------------------- associated function in this implementation
[INFO] [stdout] 10 |     fn new(data: &'a [T]) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_terminal` is never used
[INFO] [stdout]  --> src/utils.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn is_terminal(t: TokenType) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_expression` is never used
[INFO] [stdout]  --> src/parser.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn parse_expression(tokens: &[Token], pos: &mut usize) -> Result<Expr, ParserError> {
[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 `parse_term` is never used
[INFO] [stdout]   --> src/parser.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn parse_term(tokens: &[Token], pos: &mut usize) -> Result<Expr, ParserError> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_factor` is never used
[INFO] [stdout]   --> src/parser.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn parse_factor(tokens: &[Token], pos: &mut usize) -> Result<Expr, ParserError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Swimable` is never used
[INFO] [stdout]   --> src/parser.rs:87:11
[INFO] [stdout]    |
[INFO] [stdout] 87 |     trait Swimable {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Duck` is never constructed
[INFO] [stdout]   --> src/parser.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 |     struct Duck();
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Fish` is never constructed
[INFO] [stdout]   --> src/parser.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 |     struct Fish();
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `swim_then_sing` is never used
[INFO] [stdout]    --> src/parser.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn swim_then_sing<T: Swimable>(item: T) -> T {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `swim_then_sing2` is never used
[INFO] [stdout]    --> src/parser.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn swim_then_sing2<T: Swimable>(item: T) -> impl Swimable {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RandomArray` is never constructed
[INFO] [stdout]  --> src/rand.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct RandomArray<'a, T: 'a> {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/rand.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl<'a, T: Clone> RandomArray<'a, T> {
[INFO] [stdout]    | ------------------------------------- associated function in this implementation
[INFO] [stdout] 10 |     fn new(data: &'a [T]) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_terminal` is never used
[INFO] [stdout]  --> src/utils.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn is_terminal(t: TokenType) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `A_test` should have a snake case name
[INFO] [stdout]   --> src/parser.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn A_test() {
[INFO] [stdout]    |    ^^^^^^ help: convert the identifier to snake case: `a_test`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.90s
[INFO] running `Command { std: "docker" "inspect" "ebfc810162c4d44742550ba38cbf3ae1ac83266d3345e44c37732db32da03fc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebfc810162c4d44742550ba38cbf3ae1ac83266d3345e44c37732db32da03fc3", kill_on_drop: false }`
[INFO] [stdout] ebfc810162c4d44742550ba38cbf3ae1ac83266d3345e44c37732db32da03fc3
