[INFO] crate thrussh-keys 0.17.3 is already in cache
[INFO] testing thrussh-keys-0.17.3 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate thrussh-keys 0.17.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate thrussh-keys 0.17.3 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate thrussh-keys 0.17.3
[INFO] finished tweaking crates.io crate thrussh-keys 0.17.3
[INFO] tweaked toml for crates.io crate thrussh-keys 0.17.3 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] c8dd029e57723b0a73f56f5e7b5063c6285cbb845f4ef45dbbda8536a78bf720
[INFO] running `Command { std: "docker" "start" "-a" "c8dd029e57723b0a73f56f5e7b5063c6285cbb845f4ef45dbbda8536a78bf720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8dd029e57723b0a73f56f5e7b5063c6285cbb845f4ef45dbbda8536a78bf720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8dd029e57723b0a73f56f5e7b5063c6285cbb845f4ef45dbbda8536a78bf720", kill_on_drop: false }`
[INFO] [stdout] c8dd029e57723b0a73f56f5e7b5063c6285cbb845f4ef45dbbda8536a78bf720
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e10d2b73d4d02b96e06eba397dc2809889ea6d0ed141fe6e38299cdf395ec2d9
[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" "e10d2b73d4d02b96e06eba397dc2809889ea6d0ed141fe6e38299cdf395ec2d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling vcpkg v0.2.10
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling thrussh-libsodium v0.2.0
[INFO] [stderr]    Compiling cryptovec v0.5.3
[INFO] [stderr]    Compiling yasna v0.3.2
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling thrussh-keys v0.17.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.33s
[INFO] running `Command { std: "docker" "inspect" "e10d2b73d4d02b96e06eba397dc2809889ea6d0ed141fe6e38299cdf395ec2d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e10d2b73d4d02b96e06eba397dc2809889ea6d0ed141fe6e38299cdf395ec2d9", kill_on_drop: false }`
[INFO] [stdout] e10d2b73d4d02b96e06eba397dc2809889ea6d0ed141fe6e38299cdf395ec2d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78b24cf426fadeff53947c35ad1d020ab85fa9abe8205c5c6afa09e2767ecb25
[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" "78b24cf426fadeff53947c35ad1d020ab85fa9abe8205c5c6afa09e2767ecb25", kill_on_drop: false }`
[INFO] [stderr]    Compiling thrussh-keys v0.17.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `std::ops::Try`
[INFO] [stdout]    --> src/lib.rs:697:28
[INFO] [stdout]     |
[INFO] [stdout] 697 |             let (_, buf) = client.sign_request(&public, buf).await?;
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `?` operator cannot be applied to type `(agent::client::AgentClient<tokio::net::UnixStream>, std::result::Result<cryptovec::CryptoVec, anyhow::Error>)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `std::ops::Try` is not implemented for `(agent::client::AgentClient<tokio::net::UnixStream>, std::result::Result<cryptovec::CryptoVec, anyhow::Error>)`
[INFO] [stdout]     = note: required by `std::ops::Try::into_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `std::ops::Try`
[INFO] [stdout]    --> src/lib.rs:761:28
[INFO] [stdout]     |
[INFO] [stdout] 761 |             let (_, buf) = client.sign_request(&public, buf).await?;
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `?` operator cannot be applied to type `(agent::client::AgentClient<tokio::net::UnixStream>, std::result::Result<cryptovec::CryptoVec, anyhow::Error>)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `std::ops::Try` is not implemented for `(agent::client::AgentClient<tokio::net::UnixStream>, std::result::Result<cryptovec::CryptoVec, anyhow::Error>)`
[INFO] [stdout]     = note: required by `std::ops::Try::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" "78b24cf426fadeff53947c35ad1d020ab85fa9abe8205c5c6afa09e2767ecb25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78b24cf426fadeff53947c35ad1d020ab85fa9abe8205c5c6afa09e2767ecb25", kill_on_drop: false }`
[INFO] [stdout] 78b24cf426fadeff53947c35ad1d020ab85fa9abe8205c5c6afa09e2767ecb25