[INFO] cloning repository https://github.com/pbar1/ssh-util
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pbar1/ssh-util" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpbar1%2Fssh-util", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpbar1%2Fssh-util'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c84a29d510af074f40be83f45b4245dba25ca1e7
[INFO] checking pbar1/ssh-util against master#03c609abb6638f9d7f49f34326d4137d07f5cd61 for pr-155945
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpbar1%2Fssh-util" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/pbar1/ssh-util
[INFO] finished tweaking git repo https://github.com/pbar1/ssh-util
[INFO] tweaked toml for git repo https://github.com/pbar1/ssh-util written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pbar1/ssh-util on toolchain 03c609abb6638f9d7f49f34326d4137d07f5cd61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+03c609abb6638f9d7f49f34326d4137d07f5cd61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pbar1/ssh-util 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" "+03c609abb6638f9d7f49f34326d4137d07f5cd61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+03c609abb6638f9d7f49f34326d4137d07f5cd61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 164be6a45006af6bd057c22e5c544faecf4c4739cc7b31bd094ac8fa9f7e6fc8
[INFO] running `Command { std: "docker" "start" "-a" "164be6a45006af6bd057c22e5c544faecf4c4739cc7b31bd094ac8fa9f7e6fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "164be6a45006af6bd057c22e5c544faecf4c4739cc7b31bd094ac8fa9f7e6fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "164be6a45006af6bd057c22e5c544faecf4c4739cc7b31bd094ac8fa9f7e6fc8", kill_on_drop: false }`
[INFO] [stdout] 164be6a45006af6bd057c22e5c544faecf4c4739cc7b31bd094ac8fa9f7e6fc8
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+03c609abb6638f9d7f49f34326d4137d07f5cd61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b6bc800db7b6b136e08d6d97507000034b8b241b310db31d159f905edf6bd5d
[INFO] running `Command { std: "docker" "start" "-a" "1b6bc800db7b6b136e08d6d97507000034b8b241b310db31d159f905edf6bd5d", kill_on_drop: false }`
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[INFO] [stderr]     Checking ssh-util v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `auth`, `user`, `host`, `port`, and `driver` are never read
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Session {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 19 |     #[builder(field)]
[INFO] [stdout] 20 |     auth: Vec<Auth>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     user: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     host: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     port: u16,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 30 |     /// Underlying SSH implementation.
[INFO] [stdout] 31 |     driver: DriverKind,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Session` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Driver` is never used
[INFO] [stdout]   --> src/driver.rs:30:11
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub trait Driver {
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Session` is never used
[INFO] [stdout]   --> src/driver.rs:36:11
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub trait Session {
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RusshDriver` is never constructed
[INFO] [stdout]   --> src/driver/russh.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct RusshDriver<T: TransportFactory> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RusshSession` is never constructed
[INFO] [stdout]   --> src/driver/russh.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub struct RusshSession {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ClientHandler` is never constructed
[INFO] [stdout]   --> src/driver/russh.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | struct ClientHandler;
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `TransportFactory` is never used
[INFO] [stdout]  --> src/transport.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait TransportFactory {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Transport` is never used
[INFO] [stdout]   --> src/transport.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum Transport {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `SocketModifier` is never used
[INFO] [stdout]   --> src/transport/tokio_tcp.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub type SocketModifier = dyn Fn(&TcpSocket) -> std::io::Result<()>;
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TokioTcp` is never constructed
[INFO] [stdout]   --> src/transport/tokio_tcp.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct TokioTcp {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/lib.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `auth`, `user`, `host`, `port`, and `driver` are never read
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Session {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 19 |     #[builder(field)]
[INFO] [stdout] 20 |     auth: Vec<Auth>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     user: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     host: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     port: u16,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 30 |     /// Underlying SSH implementation.
[INFO] [stdout] 31 |     driver: DriverKind,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Session` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Driver` is never used
[INFO] [stdout]   --> src/driver.rs:30:11
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub trait Driver {
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Session` is never used
[INFO] [stdout]   --> src/driver.rs:36:11
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub trait Session {
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RusshDriver` is never constructed
[INFO] [stdout]   --> src/driver/russh.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct RusshDriver<T: TransportFactory> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RusshSession` is never constructed
[INFO] [stdout]   --> src/driver/russh.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub struct RusshSession {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ClientHandler` is never constructed
[INFO] [stdout]   --> src/driver/russh.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | struct ClientHandler;
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/transport.rs:14:14
[INFO] [stdout]    |
[INFO] [stdout] 14 |     TokioTcp(tokio::net::TcpStream),
[INFO] [stdout]    |     -------- ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Transport` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 14 -     TokioTcp(tokio::net::TcpStream),
[INFO] [stdout] 14 +     TokioTcp(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `None` is never constructed
[INFO] [stdout]   --> src/transport.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum Transport {
[INFO] [stdout]    |          --------- variant in this enum
[INFO] [stdout] 13 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Transport` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 13s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint-dig v0.8.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "1b6bc800db7b6b136e08d6d97507000034b8b241b310db31d159f905edf6bd5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b6bc800db7b6b136e08d6d97507000034b8b241b310db31d159f905edf6bd5d", kill_on_drop: false }`
[INFO] [stdout] 1b6bc800db7b6b136e08d6d97507000034b8b241b310db31d159f905edf6bd5d
