[INFO] cloning repository https://github.com/remram44/rs-sync
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/remram44/rs-sync" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremram44%2Frs-sync", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremram44%2Frs-sync'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1914a26d4f1413466c66fbcdd1614779662feb9c
[INFO] checking remram44/rs-sync against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremram44%2Frs-sync" "/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/remram44/rs-sync on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/remram44/rs-sync
[INFO] finished tweaking git repo https://github.com/remram44/rs-sync
[INFO] tweaked toml for git repo https://github.com/remram44/rs-sync written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/remram44/rs-sync already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rusqlite v0.16.0
[INFO] [stderr]   Downloaded libsqlite3-sys v0.11.1
[INFO] [stderr]   Downloaded cdchunking v0.2.1
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 20d249691ce7f1e34907a87088e1f9c7010dac7d5f184811226bfc02f6f794cd
[INFO] running `Command { std: "docker" "start" "-a" "20d249691ce7f1e34907a87088e1f9c7010dac7d5f184811226bfc02f6f794cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20d249691ce7f1e34907a87088e1f9c7010dac7d5f184811226bfc02f6f794cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20d249691ce7f1e34907a87088e1f9c7010dac7d5f184811226bfc02f6f794cd", kill_on_drop: false }`
[INFO] [stdout] 20d249691ce7f1e34907a87088e1f9c7010dac7d5f184811226bfc02f6f794cd
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 710347dddd149be2639db59b819d250df9ce8c1a9b97101a7899fd8df7e4ac7d
[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" "710347dddd149be2639db59b819d250df9ce8c1a9b97101a7899fd8df7e4ac7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking cdchunking v0.2.1
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking futures-channel v0.3.17
[INFO] [stderr]    Compiling libsqlite3-sys v0.11.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking rusqlite v0.16.0
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking futures-executor v0.3.17
[INFO] [stderr]     Checking futures v0.3.17
[INFO] [stderr]     Checking syncfast v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `receive`
[INFO] [stdout]    --> src/sync/ssh/proto.rs:198:12
[INFO] [stdout]     |
[INFO] [stdout] 198 |     pub fn receive<'a, E, F>(&'a mut self, func: F) -> Result<Messages<'a>, E>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]    --> src/sync/ssh/proto.rs:229:12
[INFO] [stdout]     |
[INFO] [stdout] 229 |     pub fn parse<'a>(&'a mut self, input: &[u8]) -> Messages<'a> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]    --> src/sync/ssh/proto.rs:229:12
[INFO] [stdout]     |
[INFO] [stdout] 229 |     pub fn parse<'a>(&'a mut self, input: &[u8]) -> Messages<'a> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.97s
[INFO] running `Command { std: "docker" "inspect" "710347dddd149be2639db59b819d250df9ce8c1a9b97101a7899fd8df7e4ac7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "710347dddd149be2639db59b819d250df9ce8c1a9b97101a7899fd8df7e4ac7d", kill_on_drop: false }`
[INFO] [stdout] 710347dddd149be2639db59b819d250df9ce8c1a9b97101a7899fd8df7e4ac7d