[INFO] fetching crate tusk 0.0.1...
[INFO] checking tusk-0.0.1 against try#b946edaa85de45f124065f52b1bc55ba2fb4f9fb for pr-157562
[INFO] extracting crate tusk 0.0.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate tusk 0.0.1
[INFO] finished tweaking crates.io crate tusk 0.0.1
[INFO] tweaked toml for crates.io crate tusk 0.0.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tusk 0.0.1 on toolchain b946edaa85de45f124065f52b1bc55ba2fb4f9fb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "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" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 254 packages to latest compatible versions
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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] c4a84becae92383e04a4dd083c43f4d3b0779f77c3a4fb0331605e84115d4944
[INFO] running `Command { std: "docker" "start" "c4a84becae92383e04a4dd083c43f4d3b0779f77c3a4fb0331605e84115d4944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c4a84becae92383e04a4dd083c43f4d3b0779f77c3a4fb0331605e84115d4944" "/opt/rustwide/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4a84becae92383e04a4dd083c43f4d3b0779f77c3a4fb0331605e84115d4944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c4a84becae92383e04a4dd083c43f4d3b0779f77c3a4fb0331605e84115d4944" "/opt/rustwide/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/tusk/mod.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         /// Load the agent
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 58 |         let reader = File::open(&master_config_file_buf)?;
[INFO] [stdout]    |         -------------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/plugins/inputs/mod.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/plugins/inputs/mod.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |             InputFormat::JSON => serde_json::from_reader(input)?,
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 61 |             InputFormat::YAML => serde_yaml::from_reader(input)?,
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 62 |             InputFormat::Bincode => bincode::deserialize_from(input)?,
[INFO] [stdout]    |             -------------------- matches some of the same values
[INFO] [stdout] 63 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/plugins/outputs/mod.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/plugins/outputs/mod.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             OutputFormat::JSON => serde_json::to_writer(output, &readings)?,
[INFO] [stdout]    |             ------------------ matches some of the same values
[INFO] [stdout] 47 |             OutputFormat::YAML => serde_yaml::to_writer(output, &readings)?,
[INFO] [stdout]    |             ------------------ matches some of the same values
[INFO] [stdout] 48 |             OutputFormat::Bincode => bincode::serialize_into(output, &readings)?,
[INFO] [stdout]    |             --------------------- matches some of the same values
[INFO] [stdout] 49 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/tusk/mod.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn default() -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 44 |             ..Default::default()
[INFO] [stdout]    |               ------------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `wrapped`, `filter`, `tags`, and `dimensions` are never read
[INFO] [stdout]   --> src/tusk/wrapper.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Wrapper<P> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 11 |     wrapped: P,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     filter: Option<filter::Filter>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 16 |     #[serde(default)]
[INFO] [stdout] 17 |     tags: Vec<Tag>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 18 |     #[serde(default)]
[INFO] [stdout] 19 |     dimensions: Dimensions,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Wrapper` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> src/plugins/mod.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[derive(Debug, Fail)]
[INFO] [stdout]    |                 ^---
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 `Fail` is not local
[INFO] [stdout]    |                 move the `impl` block outside of this constant `_DERIVE_failure_Fail_FOR_PluginError`
[INFO] [stdout] 14 | pub enum PluginError {
[INFO] [stdout]    |          ----------- `PluginError` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]    = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive`
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]    = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout]    = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> src/plugins/mod.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[derive(Debug, Fail)]
[INFO] [stdout]    |                 ^---
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 `Display` is not local
[INFO] [stdout]    |                 move the `impl` block outside of this constant `_DERIVE_failure_core_fmt_Display_FOR_PluginError`
[INFO] [stdout] 14 | pub enum PluginError {
[INFO] [stdout]    |          ----------- `PluginError` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]    = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive`
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]    = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/plugins/outputs/stdout.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | /         self.format
[INFO] [stdout] 17 | |             .to_writer(BufWriter::new(io::stdout()), &readings);
[INFO] [stdout]    | |_______________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let _ = self.format
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/tusk/mod.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         /// Load the agent
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 58 |         let reader = File::open(&master_config_file_buf)?;
[INFO] [stdout]    |         -------------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/plugins/inputs/mod.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/plugins/inputs/mod.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |             InputFormat::JSON => serde_json::from_reader(input)?,
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 61 |             InputFormat::YAML => serde_yaml::from_reader(input)?,
[INFO] [stdout]    |             ----------------- matches some of the same values
[INFO] [stdout] 62 |             InputFormat::Bincode => bincode::deserialize_from(input)?,
[INFO] [stdout]    |             -------------------- matches some of the same values
[INFO] [stdout] 63 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/plugins/outputs/mod.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/plugins/outputs/mod.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             OutputFormat::JSON => serde_json::to_writer(output, &readings)?,
[INFO] [stdout]    |             ------------------ matches some of the same values
[INFO] [stdout] 47 |             OutputFormat::YAML => serde_yaml::to_writer(output, &readings)?,
[INFO] [stdout]    |             ------------------ matches some of the same values
[INFO] [stdout] 48 |             OutputFormat::Bincode => bincode::serialize_into(output, &readings)?,
[INFO] [stdout]    |             --------------------- matches some of the same values
[INFO] [stdout] 49 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/tusk/mod.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn default() -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 44 |             ..Default::default()
[INFO] [stdout]    |               ------------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `wrapped`, `filter`, `tags`, and `dimensions` are never read
[INFO] [stdout]   --> src/tusk/wrapper.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Wrapper<P> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 11 |     wrapped: P,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     filter: Option<filter::Filter>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 16 |     #[serde(default)]
[INFO] [stdout] 17 |     tags: Vec<Tag>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 18 |     #[serde(default)]
[INFO] [stdout] 19 |     dimensions: Dimensions,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Wrapper` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> src/plugins/mod.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[derive(Debug, Fail)]
[INFO] [stdout]    |                 ^---
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 `Fail` is not local
[INFO] [stdout]    |                 move the `impl` block outside of this constant `_DERIVE_failure_Fail_FOR_PluginError`
[INFO] [stdout] 14 | pub enum PluginError {
[INFO] [stdout]    |          ----------- `PluginError` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]    = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive`
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]    = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout]    = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> src/plugins/mod.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[derive(Debug, Fail)]
[INFO] [stdout]    |                 ^---
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 `Display` is not local
[INFO] [stdout]    |                 move the `impl` block outside of this constant `_DERIVE_failure_core_fmt_Display_FOR_PluginError`
[INFO] [stdout] 14 | pub enum PluginError {
[INFO] [stdout]    |          ----------- `PluginError` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]    = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive`
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]    = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/plugins/outputs/stdout.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | /         self.format
[INFO] [stdout] 17 | |             .to_writer(BufWriter::new(io::stdout()), &readings);
[INFO] [stdout]    | |_______________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let _ = self.format
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 36.61s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.11, nom v4.2.3, v_htmlescape v0.4.5
[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" "c4a84becae92383e04a4dd083c43f4d3b0779f77c3a4fb0331605e84115d4944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4a84becae92383e04a4dd083c43f4d3b0779f77c3a4fb0331605e84115d4944", kill_on_drop: false }`
[INFO] [stdout] c4a84becae92383e04a4dd083c43f4d3b0779f77c3a4fb0331605e84115d4944
