[INFO] fetching crate polyglot 0.2.1... [INFO] testing polyglot-0.2.1 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1 [INFO] extracting crate polyglot 0.2.1 into /workspace/builds/worker-0-tc1/source [INFO] started tweaking crates.io crate polyglot 0.2.1 [INFO] finished tweaking crates.io crate polyglot 0.2.1 [INFO] tweaked toml for crates.io crate polyglot 0.2.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate polyglot 0.2.1 on toolchain caccb4d0368bd918ef6668af8e13834d07040417 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 23 packages to latest compatible versions [INFO] [stderr] Adding rmp-serde v0.14.4 (available: v1.3.0) [INFO] [stderr] Adding serde_yaml v0.8.26 (available: v0.9.34+deprecated) [INFO] [stderr] Adding toml v0.5.11 (available: v0.9.7) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded rmp-serde v0.14.4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c58b85811b16582473ebfcf52247ffb58753cb86b521ef10fce24c4a612157f3 [INFO] running `Command { std: "docker" "start" "-a" "c58b85811b16582473ebfcf52247ffb58753cb86b521ef10fce24c4a612157f3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c58b85811b16582473ebfcf52247ffb58753cb86b521ef10fce24c4a612157f3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c58b85811b16582473ebfcf52247ffb58753cb86b521ef10fce24c4a612157f3", kill_on_drop: false }` [INFO] [stdout] c58b85811b16582473ebfcf52247ffb58753cb86b521ef10fce24c4a612157f3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 60403d1f8614af61325847d6911116041d71132764640df2e134a6c07bc5d79f [INFO] running `Command { std: "docker" "start" "-a" "60403d1f8614af61325847d6911116041d71132764640df2e134a6c07bc5d79f", kill_on_drop: false }` [INFO] [stderr] Compiling polyglot v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/de.rs:23:20 [INFO] [stdout] | [INFO] [stdout] 23 | pub fn from_str(s: &str, format: Format) -> crate::Result [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `format` [INFO] [stdout] --> src/de.rs:23:29 [INFO] [stdout] | [INFO] [stdout] 23 | pub fn from_str(s: &str, format: Format) -> crate::Result [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rdr` [INFO] [stdout] --> src/de.rs:77:30 [INFO] [stdout] | [INFO] [stdout] 77 | pub fn from_reader(mut rdr: R, format: Format) -> crate::Result [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rdr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `format` [INFO] [stdout] --> src/de.rs:77:38 [INFO] [stdout] | [INFO] [stdout] 77 | pub fn from_reader(mut rdr: R, format: Format) -> crate::Result [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/de.rs:77:26 [INFO] [stdout] | [INFO] [stdout] 77 | pub fn from_reader(mut rdr: R, format: Format) -> crate::Result [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: `val` [INFO] [stdout] --> src/ser.rs:21:29 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn to_vec(val: &T, format: Format) -> crate::Result> { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `format` [INFO] [stdout] --> src/ser.rs:21:38 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn to_vec(val: &T, format: Format) -> crate::Result> { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/ser.rs:75:32 [INFO] [stdout] | [INFO] [stdout] 75 | pub fn to_string(val: &T, format: Format) -> crate::Result { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `format` [INFO] [stdout] --> src/ser.rs:75:41 [INFO] [stdout] | [INFO] [stdout] 75 | pub fn to_string(val: &T, format: Format) -> crate::Result { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s [INFO] running `Command { std: "docker" "inspect" "60403d1f8614af61325847d6911116041d71132764640df2e134a6c07bc5d79f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "60403d1f8614af61325847d6911116041d71132764640df2e134a6c07bc5d79f", kill_on_drop: false }` [INFO] [stdout] 60403d1f8614af61325847d6911116041d71132764640df2e134a6c07bc5d79f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3938a65dc0acd7d8282d925244ce1c252c3abac9f5db7365a7391b7a50dcb0f8 [INFO] running `Command { std: "docker" "start" "-a" "3938a65dc0acd7d8282d925244ce1c252c3abac9f5db7365a7391b7a50dcb0f8", kill_on_drop: false }` [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/de.rs:23:20 [INFO] [stdout] | [INFO] [stdout] 23 | pub fn from_str(s: &str, format: Format) -> crate::Result [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `format` [INFO] [stdout] --> src/de.rs:23:29 [INFO] [stdout] | [INFO] [stdout] 23 | pub fn from_str(s: &str, format: Format) -> crate::Result [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rdr` [INFO] [stdout] --> src/de.rs:77:30 [INFO] [stdout] | [INFO] [stdout] 77 | pub fn from_reader(mut rdr: R, format: Format) -> crate::Result [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rdr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `format` [INFO] [stdout] --> src/de.rs:77:38 [INFO] [stdout] | [INFO] [stdout] 77 | pub fn from_reader(mut rdr: R, format: Format) -> crate::Result [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/de.rs:77:26 [INFO] [stdout] | [INFO] [stdout] 77 | pub fn from_reader(mut rdr: R, format: Format) -> crate::Result [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: `val` [INFO] [stdout] --> src/ser.rs:21:29 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn to_vec(val: &T, format: Format) -> crate::Result> { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `format` [INFO] [stdout] --> src/ser.rs:21:38 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn to_vec(val: &T, format: Format) -> crate::Result> { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/ser.rs:75:32 [INFO] [stdout] | [INFO] [stdout] 75 | pub fn to_string(val: &T, format: Format) -> crate::Result { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `format` [INFO] [stdout] --> src/ser.rs:75:41 [INFO] [stdout] | [INFO] [stdout] 75 | pub fn to_string(val: &T, format: Format) -> crate::Result { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling polyglot v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] error[E0599]: no variant or associated item named `JSON` found for enum `Format` in the current scope [INFO] [stdout] --> src/tests/de.rs:34:56 [INFO] [stdout] | [INFO] [stdout] 34 | simple_json: (include_str!("data/1.json"), Format::JSON), [INFO] [stdout] | ^^^^ variant or associated item not found in `Format` [INFO] [stdout] | [INFO] [stdout] ::: src/format.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum Format { [INFO] [stdout] | --------------- variant or associated item `JSON` not found for this enum [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no variant or associated item named `TOML` found for enum `Format` in the current scope [INFO] [stdout] --> src/tests/de.rs:35:56 [INFO] [stdout] | [INFO] [stdout] 35 | simple_toml: (include_str!("data/1.toml"), Format::TOML), [INFO] [stdout] | ^^^^ variant or associated item not found in `Format` [INFO] [stdout] | [INFO] [stdout] ::: src/format.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum Format { [INFO] [stdout] | --------------- variant or associated item `TOML` not found for this enum [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no variant or associated item named `JSON` found for enum `Format` in the current scope [INFO] [stdout] --> src/tests/format.rs:16:26 [INFO] [stdout] | [INFO] [stdout] 16 | asref_json: (Format::JSON, "json"), [INFO] [stdout] | ^^^^ variant or associated item not found in `Format` [INFO] [stdout] | [INFO] [stdout] ::: src/format.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum Format { [INFO] [stdout] | --------------- variant or associated item `JSON` not found for this enum [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no variant or associated item named `TOML` found for enum `Format` in the current scope [INFO] [stdout] --> src/tests/format.rs:17:26 [INFO] [stdout] | [INFO] [stdout] 17 | asref_toml: (Format::TOML, "toml"), [INFO] [stdout] | ^^^^ variant or associated item not found in `Format` [INFO] [stdout] | [INFO] [stdout] ::: src/format.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum Format { [INFO] [stdout] | --------------- variant or associated item `TOML` not found for this enum [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no variant or associated item named `MsgPack` found for enum `Format` in the current scope [INFO] [stdout] --> src/tests/format.rs:18:29 [INFO] [stdout] | [INFO] [stdout] 18 | asref_msgpack: (Format::MsgPack, "msgpack"), [INFO] [stdout] | ^^^^^^^ variant or associated item not found in `Format` [INFO] [stdout] | [INFO] [stdout] ::: src/format.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum Format { [INFO] [stdout] | --------------- variant or associated item `MsgPack` not found for this enum [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no variant or associated item named `YAML` found for enum `Format` in the current scope [INFO] [stdout] --> src/tests/format.rs:19:26 [INFO] [stdout] | [INFO] [stdout] 19 | asref_yaml: (Format::YAML, "yaml"), [INFO] [stdout] | ^^^^ variant or associated item not found in `Format` [INFO] [stdout] | [INFO] [stdout] ::: src/format.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum Format { [INFO] [stdout] | --------------- variant or associated item `YAML` not found for this enum [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no variant or associated item named `JSON` found for enum `Format` in the current scope [INFO] [stdout] --> src/tests/ser.rs:12:42 [INFO] [stdout] | [INFO] [stdout] 12 | for frmt in vec![Format::JSON, Format::MsgPack, Format::TOML, Format::YAML].iter() { [INFO] [stdout] | ^^^^ variant or associated item not found in `Format` [INFO] [stdout] ... [INFO] [stdout] 28 | / ser_tests! { [INFO] [stdout] 29 | | base_struct: TestStructA{name: String::from("John"), age: 18, is_nice: true}, [INFO] [stdout] 30 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] ::: src/format.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum Format { [INFO] [stdout] | --------------- variant or associated item `JSON` not found for this enum [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `ser_tests` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no variant or associated item named `MsgPack` found for enum `Format` in the current scope [INFO] [stdout] --> src/tests/ser.rs:12:56 [INFO] [stdout] | [INFO] [stdout] 12 | for frmt in vec![Format::JSON, Format::MsgPack, Format::TOML, Format::YAML].iter() { [INFO] [stdout] | ^^^^^^^ variant or associated item not found in `Format` [INFO] [stdout] ... [INFO] [stdout] 28 | / ser_tests! { [INFO] [stdout] 29 | | base_struct: TestStructA{name: String::from("John"), age: 18, is_nice: true}, [INFO] [stdout] 30 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] ::: src/format.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum Format { [INFO] [stdout] | --------------- variant or associated item `MsgPack` not found for this enum [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `ser_tests` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no variant or associated item named `TOML` found for enum `Format` in the current scope [INFO] [stdout] --> src/tests/ser.rs:12:73 [INFO] [stdout] | [INFO] [stdout] 12 | for frmt in vec![Format::JSON, Format::MsgPack, Format::TOML, Format::YAML].iter() { [INFO] [stdout] | ^^^^ variant or associated item not found in `Format` [INFO] [stdout] ... [INFO] [stdout] 28 | / ser_tests! { [INFO] [stdout] 29 | | base_struct: TestStructA{name: String::from("John"), age: 18, is_nice: true}, [INFO] [stdout] 30 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] ::: src/format.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum Format { [INFO] [stdout] | --------------- variant or associated item `TOML` not found for this enum [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `ser_tests` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no variant or associated item named `YAML` found for enum `Format` in the current scope [INFO] [stdout] --> src/tests/ser.rs:12:87 [INFO] [stdout] | [INFO] [stdout] 12 | for frmt in vec![Format::JSON, Format::MsgPack, Format::TOML, Format::YAML].iter() { [INFO] [stdout] | ^^^^ variant or associated item not found in `Format` [INFO] [stdout] ... [INFO] [stdout] 28 | / ser_tests! { [INFO] [stdout] 29 | | base_struct: TestStructA{name: String::from("John"), age: 18, is_nice: true}, [INFO] [stdout] 30 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] ::: src/format.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum Format { [INFO] [stdout] | --------------- variant or associated item `YAML` not found for this enum [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `ser_tests` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/de.rs:23:20 [INFO] [stdout] | [INFO] [stdout] 23 | pub fn from_str(s: &str, format: Format) -> crate::Result [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `format` [INFO] [stdout] --> src/de.rs:23:29 [INFO] [stdout] | [INFO] [stdout] 23 | pub fn from_str(s: &str, format: Format) -> crate::Result [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rdr` [INFO] [stdout] --> src/de.rs:77:30 [INFO] [stdout] | [INFO] [stdout] 77 | pub fn from_reader(mut rdr: R, format: Format) -> crate::Result [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rdr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `format` [INFO] [stdout] --> src/de.rs:77:38 [INFO] [stdout] | [INFO] [stdout] 77 | pub fn from_reader(mut rdr: R, format: Format) -> crate::Result [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/de.rs:77:26 [INFO] [stdout] | [INFO] [stdout] 77 | pub fn from_reader(mut rdr: R, format: Format) -> crate::Result [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: `val` [INFO] [stdout] --> src/ser.rs:21:29 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn to_vec(val: &T, format: Format) -> crate::Result> { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `format` [INFO] [stdout] --> src/ser.rs:21:38 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn to_vec(val: &T, format: Format) -> crate::Result> { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> src/ser.rs:75:32 [INFO] [stdout] | [INFO] [stdout] 75 | pub fn to_string(val: &T, format: Format) -> crate::Result { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `format` [INFO] [stdout] --> src/ser.rs:75:41 [INFO] [stdout] | [INFO] [stdout] 75 | pub fn to_string(val: &T, format: Format) -> crate::Result { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_format` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] [INFO] [stderr] error: could not compile `polyglot` (lib test) due to 10 previous errors; 9 warnings emitted [INFO] running `Command { std: "docker" "inspect" "3938a65dc0acd7d8282d925244ce1c252c3abac9f5db7365a7391b7a50dcb0f8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3938a65dc0acd7d8282d925244ce1c252c3abac9f5db7365a7391b7a50dcb0f8", kill_on_drop: false }` [INFO] [stdout] 3938a65dc0acd7d8282d925244ce1c252c3abac9f5db7365a7391b7a50dcb0f8