[INFO] cloning repository https://github.com/Alexendoo/paper-backup
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Alexendoo/paper-backup" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexendoo%2Fpaper-backup", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexendoo%2Fpaper-backup'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66a78f589b3145f2bbaea254bd8a81110d7f108a
[INFO] checking Alexendoo/paper-backup against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexendoo%2Fpaper-backup" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Alexendoo/paper-backup on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Alexendoo/paper-backup
[INFO] finished tweaking git repo https://github.com/Alexendoo/paper-backup
[INFO] tweaked toml for git repo https://github.com/Alexendoo/paper-backup written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Alexendoo/paper-backup already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a728546cea7f35909883af79d7b8b22262415b70b1ea393b5ea3130353dd372
[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" "9a728546cea7f35909883af79d7b8b22262415b70b1ea393b5ea3130353dd372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a728546cea7f35909883af79d7b8b22262415b70b1ea393b5ea3130353dd372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a728546cea7f35909883af79d7b8b22262415b70b1ea393b5ea3130353dd372", kill_on_drop: false }`
[INFO] [stdout] 9a728546cea7f35909883af79d7b8b22262415b70b1ea393b5ea3130353dd372
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29869a5098a1adbe821c27f4e2973231088d734a0f9e60a0207416743753bec6
[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" "29869a5098a1adbe821c27f4e2973231088d734a0f9e60a0207416743753bec6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.21
[INFO] [stderr]     Checking phf_shared v0.7.21
[INFO] [stderr]     Checking phf v0.7.21
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling paper-backup v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `pad`
[INFO] [stdout]  --> src/padding.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn pad(buf: &mut Vec<u8>, block_size: usize) {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unpad`
[INFO] [stdout]  --> src/padding.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn unpad(buf: &mut Vec<u8>) {
[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 5.41s
[INFO] running `Command { std: "docker" "inspect" "29869a5098a1adbe821c27f4e2973231088d734a0f9e60a0207416743753bec6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29869a5098a1adbe821c27f4e2973231088d734a0f9e60a0207416743753bec6", kill_on_drop: false }`
[INFO] [stdout] 29869a5098a1adbe821c27f4e2973231088d734a0f9e60a0207416743753bec6