[INFO] fetching crate mux-lang 0.3.2...
[INFO] checking mux-lang-0.3.2 against master#6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd for pr-153721
[INFO] extracting crate mux-lang 0.3.2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate mux-lang 0.3.2
[INFO] finished tweaking crates.io crate mux-lang 0.3.2
[INFO] tweaked toml for crates.io crate mux-lang 0.3.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mux-lang 0.3.2 on toolchain 6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mux-lang 0.3.2 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" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 883652410a43cfde22c130fd6370b4f5406d24b3c9f1021a6e6feb5b52038ec3
[INFO] running `Command { std: "docker" "start" "883652410a43cfde22c130fd6370b4f5406d24b3c9f1021a6e6feb5b52038ec3", kill_on_drop: false }`
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[INFO] [stderr] warning: mux-lang@0.3.2: Could not find libmux_runtime yet. Expected locations:
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[INFO] [stdout] warning: function `json_type` is never used
[INFO] [stdout]   --> src/semantics/stdlib.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn json_type() -> Type {
[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 `sig` is never used
[INFO] [stdout]   --> src/semantics/stdlib.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn sig(params: Vec<Type>, return_type: Type) -> BuiltInSig {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `register_batch` is never used
[INFO] [stdout]   --> src/semantics/stdlib.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn register_batch(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `FLOAT_PARAM` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 157 | static FLOAT_PARAM: &[Type] = &[Type::Primitive(PrimitiveType::Float)];
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `FLOAT_FLOAT_PARAMS` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 | static FLOAT_FLOAT_PARAMS: &[Type] = &[
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `INT_PARAM` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:162:8
[INFO] [stdout]     |
[INFO] [stdout] 162 | static INT_PARAM: &[Type] = &[Type::Primitive(PrimitiveType::Int)];
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `INT_STR_PARAMS` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 | static INT_STR_PARAMS: &[Type] = &[
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `BOOL_PARAM` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 167 | static BOOL_PARAM: &[Type] = &[Type::Primitive(PrimitiveType::Bool)];
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `BOOL_STR_PARAMS` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:168:8
[INFO] [stdout]     |
[INFO] [stdout] 168 | static BOOL_STR_PARAMS: &[Type] = &[
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `STR_PARAM` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:172:8
[INFO] [stdout]     |
[INFO] [stdout] 172 | static STR_PARAM: &[Type] = &[Type::Primitive(PrimitiveType::Str)];
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `STR_STR_PARAMS` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 173 | static STR_STR_PARAMS: &[Type] = &[
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `EMPTY_PARAMS` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:177:8
[INFO] [stdout]     |
[INFO] [stdout] 177 | static EMPTY_PARAMS: &[Type] = &[];
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `io_fn` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:194:4
[INFO] [stdout]     |
[INFO] [stdout] 194 | fn io_fn(name: &'static str, params: &'static [Type], ret: Type) -> StdlibItem {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `io_str_fn` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:202:4
[INFO] [stdout]     |
[INFO] [stdout] 202 | fn io_str_fn(name: &'static str, ret: Type) -> StdlibItem {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `io_str_str_fn` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:205:4
[INFO] [stdout]     |
[INFO] [stdout] 205 | fn io_str_str_fn(name: &'static str, ret: Type) -> StdlibItem {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sql_connection_type` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:228:4
[INFO] [stdout]     |
[INFO] [stdout] 228 | fn sql_connection_type() -> Type {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `datetime_fn` is never used
[INFO] [stdout]    --> src/semantics/stdlib.rs:684:4
[INFO] [stdout]     |
[INFO] [stdout] 684 | fn datetime_fn(name: &'static str, params: &'static [Type], ret: Type) -> StdlibItem {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 23s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: proc-macro-error2 v2.0.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "883652410a43cfde22c130fd6370b4f5406d24b3c9f1021a6e6feb5b52038ec3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "883652410a43cfde22c130fd6370b4f5406d24b3c9f1021a6e6feb5b52038ec3", kill_on_drop: false }`
[INFO] [stdout] 883652410a43cfde22c130fd6370b4f5406d24b3c9f1021a6e6feb5b52038ec3