[INFO] cloning repository https://github.com/johnny-keker/enter_wavman
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnny-keker/enter_wavman" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnny-keker%2Fenter_wavman", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnny-keker%2Fenter_wavman'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 70605ef6e50609018b0f63d20806fda8aebd7c65
[INFO] checking johnny-keker/enter_wavman against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnny-keker%2Fenter_wavman" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnny-keker/enter_wavman on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/johnny-keker/enter_wavman
[INFO] finished tweaking git repo https://github.com/johnny-keker/enter_wavman
[INFO] tweaked toml for git repo https://github.com/johnny-keker/enter_wavman written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/johnny-keker/enter_wavman already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded text_io v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95914fd69f3d49727121e203fa7b488a30f540371e666195330622586f9ef5a3
[INFO] running `Command { std: "docker" "start" "-a" "95914fd69f3d49727121e203fa7b488a30f540371e666195330622586f9ef5a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95914fd69f3d49727121e203fa7b488a30f540371e666195330622586f9ef5a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95914fd69f3d49727121e203fa7b488a30f540371e666195330622586f9ef5a3", kill_on_drop: false }`
[INFO] [stdout] 95914fd69f3d49727121e203fa7b488a30f540371e666195330622586f9ef5a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d58fc008d38ea3b9c4026c6257264b2da37372323e7dfe35b8ab6611d2f90014
[INFO] running `Command { std: "docker" "start" "-a" "d58fc008d38ea3b9c4026c6257264b2da37372323e7dfe35b8ab6611d2f90014", 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] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking text_io v0.1.7
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking enter_wavman v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]   --> src/wavman.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::io::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LittleEndian`
[INFO] [stdout]   --> src/wavman.rs:76:19
[INFO] [stdout]    |
[INFO] [stdout] 76 |   use byteorder::{LittleEndian, WriteBytesExt};
[INFO] [stdout]    |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]   --> src/wavman.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::io::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LittleEndian`
[INFO] [stdout]   --> src/wavman.rs:76:19
[INFO] [stdout]    |
[INFO] [stdout] 76 |   use byteorder::{LittleEndian, WriteBytesExt};
[INFO] [stdout]    |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> src/notes_tools.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 |     .into_iter()
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 14 |     .iter()
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 13 |   return IntoIterator::into_iter(lead)
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> src/notes_tools.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 |     .into_iter()
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 14 |     .iter()
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 13 |   return IntoIterator::into_iter(lead)
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^^^    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.51s
[INFO] running `Command { std: "docker" "inspect" "d58fc008d38ea3b9c4026c6257264b2da37372323e7dfe35b8ab6611d2f90014", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d58fc008d38ea3b9c4026c6257264b2da37372323e7dfe35b8ab6611d2f90014", kill_on_drop: false }`
[INFO] [stdout] d58fc008d38ea3b9c4026c6257264b2da37372323e7dfe35b8ab6611d2f90014