[INFO] cloning repository https://github.com/LabAcoustics/piwfs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LabAcoustics/piwfs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLabAcoustics%2Fpiwfs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLabAcoustics%2Fpiwfs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5b8e0d665f80b002be707e2bbed4ae74475445c6
[INFO] checking LabAcoustics/piwfs against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLabAcoustics%2Fpiwfs" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LabAcoustics/piwfs on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LabAcoustics/piwfs
[INFO] finished tweaking git repo https://github.com/LabAcoustics/piwfs
[INFO] tweaked toml for git repo https://github.com/LabAcoustics/piwfs written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/LabAcoustics/piwfs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--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-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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 67a1443c038e4af015463c3e8f3ca1990f58c6a979ba6de84ff7c948d680070f
[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" "67a1443c038e4af015463c3e8f3ca1990f58c6a979ba6de84ff7c948d680070f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67a1443c038e4af015463c3e8f3ca1990f58c6a979ba6de84ff7c948d680070f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67a1443c038e4af015463c3e8f3ca1990f58c6a979ba6de84ff7c948d680070f", kill_on_drop: false }`
[INFO] [stdout] 67a1443c038e4af015463c3e8f3ca1990f58c6a979ba6de84ff7c948d680070f
[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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38d877969e311d2f44cb68604bbc43683122ea51bf9c495a5a18ba2fd85a97af
[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" "38d877969e311d2f44cb68604bbc43683122ea51bf9c495a5a18ba2fd85a97af", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]     Checking arc-swap v0.4.6
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]     Checking indicator v0.1.0 (/opt/rustwide/workdir/indicator)
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling alsa-sys v0.3.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking signal-hook v0.1.15
[INFO] [stderr]     Checking alsa v0.4.2
[INFO] [stderr]     Checking piwfs v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/slave.rs:395:32
[INFO] [stdout]     |
[INFO] [stdout] 395 |                         panic!(err);
[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] 395 |                         panic!("{}", err);
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 395 |                         std::panic::panic_any(err);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/slave.rs:398:28
[INFO] [stdout]     |
[INFO] [stdout] 398 |                     panic!(err);
[INFO] [stdout]     |                            ^^^
[INFO] [stdout]     |
[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] 398 |                     panic!("{}", err);
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 398 |                     std::panic::panic_any(err);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/slave.rs:395:32
[INFO] [stdout]     |
[INFO] [stdout] 395 |                         panic!(err);
[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] 395 |                         panic!("{}", err);
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 395 |                         std::panic::panic_any(err);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/slave.rs:398:28
[INFO] [stdout]     |
[INFO] [stdout] 398 |                     panic!(err);
[INFO] [stdout]     |                            ^^^
[INFO] [stdout]     |
[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] 398 |                     panic!("{}", err);
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 398 |                     std::panic::panic_any(err);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.64s
[INFO] running `Command { std: "docker" "inspect" "38d877969e311d2f44cb68604bbc43683122ea51bf9c495a5a18ba2fd85a97af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38d877969e311d2f44cb68604bbc43683122ea51bf9c495a5a18ba2fd85a97af", kill_on_drop: false }`
[INFO] [stdout] 38d877969e311d2f44cb68604bbc43683122ea51bf9c495a5a18ba2fd85a97af