[INFO] cloning repository https://github.com/zzccppp/frp-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zzccppp/frp-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzzccppp%2Ffrp-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzzccppp%2Ffrp-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7adf82f272ea7040c7418925ec43da87c5dcbea5
[INFO] checking zzccppp/frp-rs against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzzccppp%2Ffrp-rs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zzccppp/frp-rs on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zzccppp/frp-rs
[INFO] finished tweaking git repo https://github.com/zzccppp/frp-rs
[INFO] tweaked toml for git repo https://github.com/zzccppp/frp-rs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/zzccppp/frp-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e8382b5fb8cfed6e43213cce3a0792253ee03f9afda6844a07547960575ab38
[INFO] running `Command { std: "docker" "start" "-a" "2e8382b5fb8cfed6e43213cce3a0792253ee03f9afda6844a07547960575ab38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e8382b5fb8cfed6e43213cce3a0792253ee03f9afda6844a07547960575ab38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e8382b5fb8cfed6e43213cce3a0792253ee03f9afda6844a07547960575ab38", kill_on_drop: false }`
[INFO] [stdout] 2e8382b5fb8cfed6e43213cce3a0792253ee03f9afda6844a07547960575ab38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3cf1a879072c4d707117ba8eced5aa5b953f9ef034773b5291dc9cbf8c871a7e
[INFO] running `Command { std: "docker" "start" "-a" "3cf1a879072c4d707117ba8eced5aa5b953f9ef034773b5291dc9cbf8c871a7e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stderr]     Checking sled v0.34.6
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking frp-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type
[INFO] [stdout]   --> src/client/transport.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |             let size = size.clone().get_u32();
[INFO] [stdout]    |                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type
[INFO] [stdout]   --> src/client/transport.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |             let size = size.clone().get_u32();
[INFO] [stdout]    |                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type
[INFO] [stdout]   --> src/server/transport.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |             let size = size.clone().get_u32();
[INFO] [stdout]    |                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type
[INFO] [stdout]   --> src/server/transport.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |             let size = size.clone().get_u32();
[INFO] [stdout]    |                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.35s
[INFO] running `Command { std: "docker" "inspect" "3cf1a879072c4d707117ba8eced5aa5b953f9ef034773b5291dc9cbf8c871a7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cf1a879072c4d707117ba8eced5aa5b953f9ef034773b5291dc9cbf8c871a7e", kill_on_drop: false }`
[INFO] [stdout] 3cf1a879072c4d707117ba8eced5aa5b953f9ef034773b5291dc9cbf8c871a7e
[INFO] checking zzccppp/frp-rs against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzzccppp%2Ffrp-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zzccppp/frp-rs on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zzccppp/frp-rs
[INFO] finished tweaking git repo https://github.com/zzccppp/frp-rs
[INFO] tweaked toml for git repo https://github.com/zzccppp/frp-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/zzccppp/frp-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c050e7234f2e3349f75a8354d01992e8978fa837ab9d2edcedbddcf8f520a91
[INFO] running `Command { std: "docker" "start" "-a" "0c050e7234f2e3349f75a8354d01992e8978fa837ab9d2edcedbddcf8f520a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c050e7234f2e3349f75a8354d01992e8978fa837ab9d2edcedbddcf8f520a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c050e7234f2e3349f75a8354d01992e8978fa837ab9d2edcedbddcf8f520a91", kill_on_drop: false }`
[INFO] [stdout] 0c050e7234f2e3349f75a8354d01992e8978fa837ab9d2edcedbddcf8f520a91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68eb6bde761ee8b2e9ce3b4851b7df6839c3feee149a26845fd863d8c4aad79e
[INFO] running `Command { std: "docker" "start" "-a" "68eb6bde761ee8b2e9ce3b4851b7df6839c3feee149a26845fd863d8c4aad79e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking sled v0.34.6
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking frp-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type
[INFO] [stdout]   --> src/client/transport.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |             let size = size.clone().get_u32();
[INFO] [stdout]    |                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type
[INFO] [stdout]   --> src/client/transport.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |             let size = size.clone().get_u32();
[INFO] [stdout]    |                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type
[INFO] [stdout]   --> src/server/transport.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |             let size = size.clone().get_u32();
[INFO] [stdout]    |                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&mut &[u8]` instead of cloning the inner type
[INFO] [stdout]   --> src/server/transport.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |             let size = size.clone().get_u32();
[INFO] [stdout]    |                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.65s
[INFO] running `Command { std: "docker" "inspect" "68eb6bde761ee8b2e9ce3b4851b7df6839c3feee149a26845fd863d8c4aad79e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68eb6bde761ee8b2e9ce3b4851b7df6839c3feee149a26845fd863d8c4aad79e", kill_on_drop: false }`
[INFO] [stdout] 68eb6bde761ee8b2e9ce3b4851b7df6839c3feee149a26845fd863d8c4aad79e