[INFO] fetching crate tusk 0.0.1...
[INFO] checking tusk-0.0.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate tusk 0.0.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate tusk 0.0.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 245 packages
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9f437249deee81b62cf2b2882d1ad2d8bd17c4430003af863bd883a804fdc53
[INFO] running `Command { std: "docker" "start" "-a" "f9f437249deee81b62cf2b2882d1ad2d8bd17c4430003af863bd883a804fdc53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9f437249deee81b62cf2b2882d1ad2d8bd17c4430003af863bd883a804fdc53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9f437249deee81b62cf2b2882d1ad2d8bd17c4430003af863bd883a804fdc53", kill_on_drop: false }`
[INFO] [stdout] f9f437249deee81b62cf2b2882d1ad2d8bd17c4430003af863bd883a804fdc53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ada79fe34a7c1289a1612c1a6bf6d417927498a5c7f8b55c9c06e2085474f9c8
[INFO] running `Command { std: "docker" "start" "-a" "ada79fe34a7c1289a1612c1a6bf6d417927498a5c7f8b55c9c06e2085474f9c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
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[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking cookie v0.11.5
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling v_escape_derive v0.5.6
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking v_escape v0.7.4
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking trust-dns-proto v0.6.3
[INFO] [stderr]     Checking trust-dns-proto v0.5.0
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking trust-dns-resolver v0.10.3
[INFO] [stderr]     Checking actix v0.7.9
[INFO] [stderr]     Checking actix-net v0.2.6
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Checking tusk v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `clap` is imported redundantly
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use clap;
[INFO] [stdout]   |     ^^^^ the item `clap` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `env_logger` is imported redundantly
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `env_logger` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/plugins/inputs/random.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand;
[INFO] [stdout]   |     ^^^^ the item `rand` is already defined by prelude
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `clap` is imported redundantly
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use clap;
[INFO] [stdout]   |     ^^^^ the item `clap` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `env_logger` is imported redundantly
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `env_logger` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/plugins/inputs/random.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand;
[INFO] [stdout]   |     ^^^^ the item `rand` is already defined by prelude
[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)]` 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]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` 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]    |             ^
[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: unreachable pattern
[INFO] [stdout]   --> src/plugins/inputs/mod.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` 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)]` on by default
[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)]` 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: unreachable pattern
[INFO] [stdout]   --> src/plugins/outputs/mod.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[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)]` on by default
[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)]` 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: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.86s
[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
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "ada79fe34a7c1289a1612c1a6bf6d417927498a5c7f8b55c9c06e2085474f9c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ada79fe34a7c1289a1612c1a6bf6d417927498a5c7f8b55c9c06e2085474f9c8", kill_on_drop: false }`
[INFO] [stdout] ada79fe34a7c1289a1612c1a6bf6d417927498a5c7f8b55c9c06e2085474f9c8
[INFO] checking tusk-0.0.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate tusk 0.0.1 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate tusk 0.0.1 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3bcf0b11a7f373c1be54715e97de90d9dfa965564e529a8413716c5c492b4bcd
[INFO] running `Command { std: "docker" "start" "-a" "3bcf0b11a7f373c1be54715e97de90d9dfa965564e529a8413716c5c492b4bcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3bcf0b11a7f373c1be54715e97de90d9dfa965564e529a8413716c5c492b4bcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bcf0b11a7f373c1be54715e97de90d9dfa965564e529a8413716c5c492b4bcd", kill_on_drop: false }`
[INFO] [stdout] 3bcf0b11a7f373c1be54715e97de90d9dfa965564e529a8413716c5c492b4bcd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 876fece1da79e952bc1633aa126d7e6cee8620a86c3c7c11f6e3b95edcf363c0
[INFO] running `Command { std: "docker" "start" "-a" "876fece1da79e952bc1633aa126d7e6cee8620a86c3c7c11f6e3b95edcf363c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
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[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking unicode-normalization v0.1.23
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[INFO] [stderr]    Compiling semver v0.9.0
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[INFO] [stderr]    Compiling rustc_version v0.2.3
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[INFO] [stdout] warning: the item `clap` is imported redundantly
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use clap;
[INFO] [stdout]   |     ^^^^ the item `clap` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `env_logger` is imported redundantly
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `env_logger` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/plugins/inputs/random.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand;
[INFO] [stdout]   |     ^^^^ the item `rand` is already defined by prelude
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `clap` is imported redundantly
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use clap;
[INFO] [stdout]   |     ^^^^ the item `clap` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `env_logger` is imported redundantly
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `env_logger` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/plugins/inputs/random.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand;
[INFO] [stdout]   |     ^^^^ the item `rand` is already defined by prelude
[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)]` 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]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` 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]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` 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]    |             ^
[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]    |             ^
[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: 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)]` 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)]` on by default
[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)]` 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 `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)]` 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: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.85s
[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
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "876fece1da79e952bc1633aa126d7e6cee8620a86c3c7c11f6e3b95edcf363c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "876fece1da79e952bc1633aa126d7e6cee8620a86c3c7c11f6e3b95edcf363c0", kill_on_drop: false }`
[INFO] [stdout] 876fece1da79e952bc1633aa126d7e6cee8620a86c3c7c11f6e3b95edcf363c0