[INFO] fetching crate tree-buf 0.10.0...
[INFO] checking tree-buf-0.10.0 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] extracting crate tree-buf 0.10.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate tree-buf 0.10.0
[INFO] finished tweaking crates.io crate tree-buf 0.10.0
[INFO] tweaked toml for crates.io crate tree-buf 0.10.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tree-buf 0.10.0 on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 90 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[INFO] [stderr]       Adding defer v0.1.0 (available: v0.2.1)
[INFO] [stderr]       Adding firestorm v0.3.1 (available: v0.5.1)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded simple-16 v0.2.0
[INFO] [stderr]   Downloaded tree-buf-macros v0.10.0
[INFO] [stderr]   Downloaded gibbon v0.1.3
[INFO] [stderr]   Downloaded coercible_errors v0.1.4
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[INFO] [stderr]   Downloaded transmute v0.1.1
[INFO] [stderr]   Downloaded defer v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efa5bd14d6415924063f94851880677b4803e766775553c508b85af0aefab003
[INFO] running `Command { std: "docker" "start" "-a" "efa5bd14d6415924063f94851880677b4803e766775553c508b85af0aefab003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efa5bd14d6415924063f94851880677b4803e766775553c508b85af0aefab003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efa5bd14d6415924063f94851880677b4803e766775553c508b85af0aefab003", kill_on_drop: false }`
[INFO] [stdout] efa5bd14d6415924063f94851880677b4803e766775553c508b85af0aefab003
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae2c58a937678155bafb91cbfbf91954409046466209f2c60a54f1b3ba0e63b8
[INFO] running `Command { std: "docker" "start" "-a" "ae2c58a937678155bafb91cbfbf91954409046466209f2c60a54f1b3ba0e63b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking object v0.37.3
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]     Checking csv-core v0.1.13
[INFO] [stderr]     Checking firestorm v0.3.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking zigzag v0.1.0
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking transmute v0.1.1
[INFO] [stderr]     Checking gibbon v0.1.3
[INFO] [stderr]     Checking defer v0.1.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking simple-16 v0.2.0
[INFO] [stderr]    Compiling tree-buf-macros v0.10.0
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking serde_json v1.0.145
[INFO] [stderr]     Checking csv v1.4.0
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking backtrace v0.3.76
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stderr]     Checking coercible_errors v0.1.4
[INFO] [stderr]     Checking tree-buf v0.10.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `tests`
[INFO] [stdout]   --> src/internal/encodings/delta.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 | #[cfg(tests)]
[INFO] [stdout]    |       ^^^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tests)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tests)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `array_fixed::*`, `boolean::*`, `float::*`, `integer::*`, and `tuple::*`
[INFO] [stdout]   --> src/internal/types/mod.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub use {array::*, array_fixed::*, boolean::*, bytes::*, float::*, hashmap::*, ignore::*, integer::*, nullable::*, string::*, tuple::*};
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^  ^^^^^^^^^^            ^^^^^^^^                         ^^^^^^^^^^                          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` attribute cannot be used on macro defs
[INFO] [stdout]  --> src/internal/branch/mod.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = help: `#[macro_use]` can be applied to crates, extern crates, and modules
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/internal/types/integer.rs:219:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |             if let Ok(lower_max) = lower_max {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 292 | impl_lowerable!(u64, encode_u64, fast_size_for_u64, u32, encode_u32, fast_size_for_u32, (u16), (PrefixVarIntCompressor));
[INFO] [stdout]     | ------------------------------------------------------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_lowerable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/internal/types/integer.rs:254:16
[INFO] [stdout]     |
[INFO] [stdout] 254 |             if let Ok(lower_max) = lower_max {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 292 | impl_lowerable!(u64, encode_u64, fast_size_for_u64, u32, encode_u32, fast_size_for_u32, (u16), (PrefixVarIntCompressor));
[INFO] [stdout]     | ------------------------------------------------------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `impl_lowerable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/internal/types/integer.rs:219:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |               if let Ok(lower_max) = lower_max {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 293 | / impl_lowerable!(
[INFO] [stdout] 294 | |     u32,
[INFO] [stdout] 295 | |     encode_u32,
[INFO] [stdout] 296 | |     fast_size_for_u32,
[INFO] [stdout] ...   |
[INFO] [stdout] 301 | |     (Simple16Compressor<u32>, DeltaZigZagCompressor, PrefixVarIntCompressor)
[INFO] [stdout] 302 | | ); // TODO: Consider adding Fixed.
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `impl_lowerable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/internal/types/integer.rs:254:16
[INFO] [stdout]     |
[INFO] [stdout] 254 |               if let Ok(lower_max) = lower_max {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 293 | / impl_lowerable!(
[INFO] [stdout] 294 | |     u32,
[INFO] [stdout] 295 | |     encode_u32,
[INFO] [stdout] 296 | |     fast_size_for_u32,
[INFO] [stdout] ...   |
[INFO] [stdout] 301 | |     (Simple16Compressor<u32>, DeltaZigZagCompressor, PrefixVarIntCompressor)
[INFO] [stdout] 302 | | ); // TODO: Consider adding Fixed.
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `impl_lowerable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/internal/types/integer.rs:219:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |               if let Ok(lower_max) = lower_max {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 303 | / impl_lowerable!(
[INFO] [stdout] 304 | |     u16,
[INFO] [stdout] 305 | |     encode_u16,
[INFO] [stdout] 306 | |     fast_size_for_u16,
[INFO] [stdout] ...   |
[INFO] [stdout] 311 | |     (Simple16Compressor<u16>, PrefixVarIntCompressor)
[INFO] [stdout] 312 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `impl_lowerable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/internal/types/integer.rs:254:16
[INFO] [stdout]     |
[INFO] [stdout] 254 |               if let Ok(lower_max) = lower_max {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 303 | / impl_lowerable!(
[INFO] [stdout] 304 | |     u16,
[INFO] [stdout] 305 | |     encode_u16,
[INFO] [stdout] 306 | |     fast_size_for_u16,
[INFO] [stdout] ...   |
[INFO] [stdout] 311 | |     (Simple16Compressor<u16>, PrefixVarIntCompressor)
[INFO] [stdout] 312 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `impl_lowerable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tree_buf::prelude::*`
[INFO] [stdout]  --> benches/float_list.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tree_buf::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `y` is never read
[INFO] [stdout]   --> tests/schema_mismatches.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub struct Y {
[INFO] [stdout]    |                - field in this struct
[INFO] [stdout] 29 |         y: u64,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Y` has a derived impl for the trait `Debug`, 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: unexpected `cfg` condition name: `tests`
[INFO] [stdout]   --> src/internal/encodings/delta.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 | #[cfg(tests)]
[INFO] [stdout]    |       ^^^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tests)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tests)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `array_fixed::*`, `boolean::*`, `float::*`, `integer::*`, and `tuple::*`
[INFO] [stdout]   --> src/internal/types/mod.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub use {array::*, array_fixed::*, boolean::*, bytes::*, float::*, hashmap::*, ignore::*, integer::*, nullable::*, string::*, tuple::*};
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^  ^^^^^^^^^^            ^^^^^^^^                         ^^^^^^^^^^                          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[macro_use]` attribute cannot be used on macro defs
[INFO] [stdout]  --> src/internal/branch/mod.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = help: `#[macro_use]` can be applied to crates, extern crates, and modules
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/internal/types/integer.rs:219:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |             if let Ok(lower_max) = lower_max {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 292 | impl_lowerable!(u64, encode_u64, fast_size_for_u64, u32, encode_u32, fast_size_for_u32, (u16), (PrefixVarIntCompressor));
[INFO] [stdout]     | ------------------------------------------------------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_lowerable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/internal/types/integer.rs:254:16
[INFO] [stdout]     |
[INFO] [stdout] 254 |             if let Ok(lower_max) = lower_max {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 292 | impl_lowerable!(u64, encode_u64, fast_size_for_u64, u32, encode_u32, fast_size_for_u32, (u16), (PrefixVarIntCompressor));
[INFO] [stdout]     | ------------------------------------------------------------------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `impl_lowerable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/internal/types/integer.rs:219:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |               if let Ok(lower_max) = lower_max {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 293 | / impl_lowerable!(
[INFO] [stdout] 294 | |     u32,
[INFO] [stdout] 295 | |     encode_u32,
[INFO] [stdout] 296 | |     fast_size_for_u32,
[INFO] [stdout] ...   |
[INFO] [stdout] 301 | |     (Simple16Compressor<u32>, DeltaZigZagCompressor, PrefixVarIntCompressor)
[INFO] [stdout] 302 | | ); // TODO: Consider adding Fixed.
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `impl_lowerable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/internal/types/integer.rs:254:16
[INFO] [stdout]     |
[INFO] [stdout] 254 |               if let Ok(lower_max) = lower_max {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 293 | / impl_lowerable!(
[INFO] [stdout] 294 | |     u32,
[INFO] [stdout] 295 | |     encode_u32,
[INFO] [stdout] 296 | |     fast_size_for_u32,
[INFO] [stdout] ...   |
[INFO] [stdout] 301 | |     (Simple16Compressor<u32>, DeltaZigZagCompressor, PrefixVarIntCompressor)
[INFO] [stdout] 302 | | ); // TODO: Consider adding Fixed.
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `impl_lowerable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/internal/types/integer.rs:219:16
[INFO] [stdout]     |
[INFO] [stdout] 219 |               if let Ok(lower_max) = lower_max {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 303 | / impl_lowerable!(
[INFO] [stdout] 304 | |     u16,
[INFO] [stdout] 305 | |     encode_u16,
[INFO] [stdout] 306 | |     fast_size_for_u16,
[INFO] [stdout] ...   |
[INFO] [stdout] 311 | |     (Simple16Compressor<u16>, PrefixVarIntCompressor)
[INFO] [stdout] 312 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `impl_lowerable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/internal/types/integer.rs:254:16
[INFO] [stdout]     |
[INFO] [stdout] 254 |               if let Ok(lower_max) = lower_max {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 303 | / impl_lowerable!(
[INFO] [stdout] 304 | |     u16,
[INFO] [stdout] 305 | |     encode_u16,
[INFO] [stdout] 306 | |     fast_size_for_u16,
[INFO] [stdout] ...   |
[INFO] [stdout] 311 | |     (Simple16Compressor<u16>, PrefixVarIntCompressor)
[INFO] [stdout] 312 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: this warning originates in the macro `impl_lowerable` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.60s
[INFO] running `Command { std: "docker" "inspect" "ae2c58a937678155bafb91cbfbf91954409046466209f2c60a54f1b3ba0e63b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae2c58a937678155bafb91cbfbf91954409046466209f2c60a54f1b3ba0e63b8", kill_on_drop: false }`
[INFO] [stdout] ae2c58a937678155bafb91cbfbf91954409046466209f2c60a54f1b3ba0e63b8
