[INFO] cloning repository https://github.com/indutny/append-multi-log
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/indutny/append-multi-log" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findutny%2Fappend-multi-log", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findutny%2Fappend-multi-log'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2169eb250dcd3477a1aabc9b72331e0597306b43
[INFO] checking indutny/append-multi-log against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findutny%2Fappend-multi-log" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/indutny/append-multi-log on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/indutny/append-multi-log
[INFO] finished tweaking git repo https://github.com/indutny/append-multi-log
[INFO] tweaked toml for git repo https://github.com/indutny/append-multi-log written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/indutny/append-multi-log already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb770274707a3c32548d35cc9da50d114ec06a7d10152a990ce60748eddecc41
[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" "bb770274707a3c32548d35cc9da50d114ec06a7d10152a990ce60748eddecc41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb770274707a3c32548d35cc9da50d114ec06a7d10152a990ce60748eddecc41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb770274707a3c32548d35cc9da50d114ec06a7d10152a990ce60748eddecc41", kill_on_drop: false }`
[INFO] [stdout] bb770274707a3c32548d35cc9da50d114ec06a7d10152a990ce60748eddecc41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be36040b9f23ddaf9eea56e2d5f05b998747c94fe7ebf3fca1caf0b3e119fabd
[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" "be36040b9f23ddaf9eea56e2d5f05b998747c94fe7ebf3fca1caf0b3e119fabd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking append-log v0.1.4-dev
[INFO] [stderr]     Checking append-multi-log v0.1.0-dev (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:29:39
[INFO] [stdout]    |
[INFO] [stdout] 29 |             _ => write!(f, "{}", self.description()),
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/error.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             _ => write!(f, "{}", self.description()),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `path`
[INFO] [stdout]   --> src/log.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     path: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `options`
[INFO] [stdout]   --> src/log.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     options: Options,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `logs`
[INFO] [stdout]   --> src/log.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     logs: Vec<Log>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `log_count`
[INFO] [stdout]   --> src/log.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     log_count: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `log_path`
[INFO] [stdout]   --> src/log.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn log_path(path: &Path, index: usize) -> PathBuf {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking tempfile v3.0.7
[INFO] [stdout] warning: unused import: `tempfile::tempdir`
[INFO] [stdout]   --> src/log.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     use tempfile::tempdir;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:29:39
[INFO] [stdout]    |
[INFO] [stdout] 29 |             _ => write!(f, "{}", self.description()),
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/error.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             _ => write!(f, "{}", self.description()),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `path`
[INFO] [stdout]   --> src/log.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     path: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `options`
[INFO] [stdout]   --> src/log.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     options: Options,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `logs`
[INFO] [stdout]   --> src/log.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     logs: Vec<Log>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `log_count`
[INFO] [stdout]   --> src/log.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     log_count: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.29s
[INFO] running `Command { std: "docker" "inspect" "be36040b9f23ddaf9eea56e2d5f05b998747c94fe7ebf3fca1caf0b3e119fabd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be36040b9f23ddaf9eea56e2d5f05b998747c94fe7ebf3fca1caf0b3e119fabd", kill_on_drop: false }`
[INFO] [stdout] be36040b9f23ddaf9eea56e2d5f05b998747c94fe7ebf3fca1caf0b3e119fabd