[INFO] fetching crate thrussh-keys 0.18.12...
[INFO] testing thrussh-keys-0.18.12 against 1.49.0 for beta-1.50-1
[INFO] extracting crate thrussh-keys 0.18.12 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate thrussh-keys 0.18.12 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate thrussh-keys 0.18.12
[INFO] finished tweaking crates.io crate thrussh-keys 0.18.12
[INFO] tweaked toml for crates.io crate thrussh-keys 0.18.12 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 53215ae5c980b3ad0142eda96307c779d030ad8971a3b436a11c736b46b77935
[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" "53215ae5c980b3ad0142eda96307c779d030ad8971a3b436a11c736b46b77935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53215ae5c980b3ad0142eda96307c779d030ad8971a3b436a11c736b46b77935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53215ae5c980b3ad0142eda96307c779d030ad8971a3b436a11c736b46b77935", kill_on_drop: false }`
[INFO] [stdout] 53215ae5c980b3ad0142eda96307c779d030ad8971a3b436a11c736b46b77935
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", 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] 1d5d1d246d191354fea6c5ef836dd9dc352d3f3655d4ea6b35f447976a521866
[INFO] running `Command { std: "docker" "start" "-a" "1d5d1d246d191354fea6c5ef836dd9dc352d3f3655d4ea6b35f447976a521866", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]    Compiling openssl v0.10.32
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling libsodium-sys v0.2.6
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling cryptovec v0.6.0
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling yasna v0.3.2
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling thrussh-libsodium v0.2.1
[INFO] [stderr]    Compiling thrussh-keys v0.18.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 38s
[INFO] running `Command { std: "docker" "inspect" "1d5d1d246d191354fea6c5ef836dd9dc352d3f3655d4ea6b35f447976a521866", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d5d1d246d191354fea6c5ef836dd9dc352d3f3655d4ea6b35f447976a521866", kill_on_drop: false }`
[INFO] [stdout] 1d5d1d246d191354fea6c5ef836dd9dc352d3f3655d4ea6b35f447976a521866
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f23f8d970606eeb0f5069f0400adc7c78babec6a0abe46b87fac18e64f575e5
[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" "5f23f8d970606eeb0f5069f0400adc7c78babec6a0abe46b87fac18e64f575e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling thrussh-keys v0.18.12 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `Try`
[INFO] [stdout]    --> src/lib.rs:753:28
[INFO] [stdout]     |
[INFO] [stdout] 753 |             let (_, buf) = client.sign_request(&public, buf).await?;
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `?` operator cannot be applied to type `(AgentClient<tokio::net::UnixStream>, std::result::Result<CryptoVec, anyhow::Error>)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Try` is not implemented for `(AgentClient<tokio::net::UnixStream>, std::result::Result<CryptoVec, anyhow::Error>)`
[INFO] [stdout]     = note: required by `into_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `Try`
[INFO] [stdout]    --> src/lib.rs:817:28
[INFO] [stdout]     |
[INFO] [stdout] 817 |             let (_, buf) = client.sign_request(&public, buf).await?;
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `?` operator cannot be applied to type `(AgentClient<tokio::net::UnixStream>, std::result::Result<CryptoVec, anyhow::Error>)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Try` is not implemented for `(AgentClient<tokio::net::UnixStream>, std::result::Result<CryptoVec, anyhow::Error>)`
[INFO] [stdout]     = note: required by `into_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `thrussh-keys`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "5f23f8d970606eeb0f5069f0400adc7c78babec6a0abe46b87fac18e64f575e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f23f8d970606eeb0f5069f0400adc7c78babec6a0abe46b87fac18e64f575e5", kill_on_drop: false }`
[INFO] [stdout] 5f23f8d970606eeb0f5069f0400adc7c78babec6a0abe46b87fac18e64f575e5