[INFO] fetching crate ac-ffmpeg 0.15.5...
[INFO] checking ac-ffmpeg-0.15.5 against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] extracting crate ac-ffmpeg 0.15.5 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate ac-ffmpeg 0.15.5 on toolchain 9503ea19edbf01b9435e80e17d60ce1b88390116
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ac-ffmpeg 0.15.5
[INFO] finished tweaking crates.io crate ac-ffmpeg 0.15.5
[INFO] tweaked toml for crates.io crate ac-ffmpeg 0.15.5 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate ac-ffmpeg 0.15.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0a841ca8f0eccb42bdc00f3c15278790eec37fd31ff65775df82dd0d3f540ed
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e0a841ca8f0eccb42bdc00f3c15278790eec37fd31ff65775df82dd0d3f540ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0a841ca8f0eccb42bdc00f3c15278790eec37fd31ff65775df82dd0d3f540ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0a841ca8f0eccb42bdc00f3c15278790eec37fd31ff65775df82dd0d3f540ed", kill_on_drop: false }`
[INFO] [stdout] e0a841ca8f0eccb42bdc00f3c15278790eec37fd31ff65775df82dd0d3f540ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f639f09e809734863b23749675a1c6bd4f1c23e69a57eacb5eb52e3fe993181c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f639f09e809734863b23749675a1c6bd4f1c23e69a57eacb5eb52e3fe993181c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling ac-ffmpeg v0.15.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/codec/mod.rs:155:53
[INFO] [stdout]     |
[INFO] [stdout] 155 |             CodecErrorVariant::Again(msg) => panic!(msg),
[INFO] [stdout]     |                                                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 155 |             CodecErrorVariant::Again(msg) => panic!("{}", msg),
[INFO] [stdout]     |                                                     ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 155 |             CodecErrorVariant::Again(msg) => std::panic::panic_any(msg),
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/codec/mod.rs:155:53
[INFO] [stdout]     |
[INFO] [stdout] 155 |             CodecErrorVariant::Again(msg) => panic!(msg),
[INFO] [stdout]     |                                                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 155 |             CodecErrorVariant::Again(msg) => panic!("{}", msg),
[INFO] [stdout]     |                                                     ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 155 |             CodecErrorVariant::Again(msg) => std::panic::panic_any(msg),
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.34s
[INFO] running `Command { std: "docker" "inspect" "f639f09e809734863b23749675a1c6bd4f1c23e69a57eacb5eb52e3fe993181c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f639f09e809734863b23749675a1c6bd4f1c23e69a57eacb5eb52e3fe993181c", kill_on_drop: false }`
[INFO] [stdout] f639f09e809734863b23749675a1c6bd4f1c23e69a57eacb5eb52e3fe993181c