[INFO] fetching crate qoaudio 0.7.0...
[INFO] checking qoaudio-0.7.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate qoaudio 0.7.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate qoaudio 0.7.0 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 qoaudio 0.7.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate qoaudio 0.7.0
[INFO] tweaked toml for crates.io crate qoaudio 0.7.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate qoaudio 0.7.0 already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dasp_sample v0.11.0
[INFO] [stderr]   Downloaded oboe v0.5.0
[INFO] [stderr]   Downloaded shlex v1.2.0
[INFO] [stderr]   Downloaded coreaudio-sys v0.2.13
[INFO] [stderr]   Downloaded core-foundation-sys v0.6.2
[INFO] [stderr]   Downloaded coreaudio-rs v0.11.2
[INFO] [stderr]   Downloaded rodio v0.17.1
[INFO] [stderr]   Downloaded alsa v0.7.1
[INFO] [stderr]   Downloaded jni v0.20.0
[INFO] [stderr]   Downloaded oboe-sys v0.5.0
[INFO] [stderr]   Downloaded cpal v0.15.2
[INFO] [stderr]   Downloaded windows v0.46.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4328cb29e1186eb31763222e66ebacc7bfa959ba3b31f08043cd43392154569a
[INFO] running `Command { std: "docker" "start" "-a" "4328cb29e1186eb31763222e66ebacc7bfa959ba3b31f08043cd43392154569a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4328cb29e1186eb31763222e66ebacc7bfa959ba3b31f08043cd43392154569a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4328cb29e1186eb31763222e66ebacc7bfa959ba3b31f08043cd43392154569a", kill_on_drop: false }`
[INFO] [stdout] 4328cb29e1186eb31763222e66ebacc7bfa959ba3b31f08043cd43392154569a
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0970217e1f634a288688733da4f50a25f667dfcbb1a778816b8f44b4a73a8d2
[INFO] running `Command { std: "docker" "start" "-a" "d0970217e1f634a288688733da4f50a25f667dfcbb1a778816b8f44b4a73a8d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]     Checking qoaudio v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]     Checking regex v1.9.5
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stdout] warning: the item `Cursor` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:607:9
[INFO] [stdout]     |
[INFO] [stdout] 606 |     use super::*;
[INFO] [stdout]     |         -------- the item `Cursor` is already imported here
[INFO] [stdout] 607 |     use std::io::Cursor;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.51s
[INFO] running `Command { std: "docker" "inspect" "d0970217e1f634a288688733da4f50a25f667dfcbb1a778816b8f44b4a73a8d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0970217e1f634a288688733da4f50a25f667dfcbb1a778816b8f44b4a73a8d2", kill_on_drop: false }`
[INFO] [stdout] d0970217e1f634a288688733da4f50a25f667dfcbb1a778816b8f44b4a73a8d2
[INFO] checking qoaudio-0.7.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate qoaudio 0.7.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate qoaudio 0.7.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qoaudio 0.7.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate qoaudio 0.7.0
[INFO] tweaked toml for crates.io crate qoaudio 0.7.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate qoaudio 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3fba123cb10d40ae91ad5976b6cfd05f3f7db108e344433b4d52eaa8c608e003
[INFO] running `Command { std: "docker" "start" "-a" "3fba123cb10d40ae91ad5976b6cfd05f3f7db108e344433b4d52eaa8c608e003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fba123cb10d40ae91ad5976b6cfd05f3f7db108e344433b4d52eaa8c608e003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fba123cb10d40ae91ad5976b6cfd05f3f7db108e344433b4d52eaa8c608e003", kill_on_drop: false }`
[INFO] [stdout] 3fba123cb10d40ae91ad5976b6cfd05f3f7db108e344433b4d52eaa8c608e003
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9fe7e0fa5ab9b184db0ce606e87d8767c252104b62f343c6c89339eb0d1756f
[INFO] running `Command { std: "docker" "start" "-a" "f9fe7e0fa5ab9b184db0ce606e87d8767c252104b62f343c6c89339eb0d1756f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]     Checking qoaudio v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking regex v1.9.5
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]     Checking csv v1.2.2
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stdout] warning: the item `Cursor` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:607:9
[INFO] [stdout]     |
[INFO] [stdout] 606 |     use super::*;
[INFO] [stdout]     |         -------- the item `Cursor` is already imported here
[INFO] [stdout] 607 |     use std::io::Cursor;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.96s
[INFO] running `Command { std: "docker" "inspect" "f9fe7e0fa5ab9b184db0ce606e87d8767c252104b62f343c6c89339eb0d1756f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9fe7e0fa5ab9b184db0ce606e87d8767c252104b62f343c6c89339eb0d1756f", kill_on_drop: false }`
[INFO] [stdout] f9fe7e0fa5ab9b184db0ce606e87d8767c252104b62f343c6c89339eb0d1756f