[INFO] cloning repository https://github.com/endeav0r/skua
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/endeav0r/skua" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fendeav0r%2Fskua", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fendeav0r%2Fskua'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e5ea91902b02acc9939085f7fbc80bc9b9480ee
[INFO] checking endeav0r/skua against master#7b3a7819371cef92a187e9bac8f7810ccde15216 for pr-74846
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fendeav0r%2Fskua" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/endeav0r/skua on toolchain 7b3a7819371cef92a187e9bac8f7810ccde15216
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/endeav0r/skua
[INFO] finished tweaking git repo https://github.com/endeav0r/skua
[INFO] tweaked toml for git repo https://github.com/endeav0r/skua written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/endeav0r/skua already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88bac36fc6df833096178b9fc073cd3e2d51d8501720eb749564676ff94a7a20
[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" "88bac36fc6df833096178b9fc073cd3e2d51d8501720eb749564676ff94a7a20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88bac36fc6df833096178b9fc073cd3e2d51d8501720eb749564676ff94a7a20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88bac36fc6df833096178b9fc073cd3e2d51d8501720eb749564676ff94a7a20", kill_on_drop: false }`
[INFO] [stdout] 88bac36fc6df833096178b9fc073cd3e2d51d8501720eb749564676ff94a7a20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "check" "--frozen" "--all" "--all-targets" "--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] 7fb863432fc0f436b746c851c5844bd553c8d4eeae04c531d0c556c94c31cd71
[INFO] running `Command { std: "docker" "start" "-a" "7fb863432fc0f436b746c851c5844bd553c8d4eeae04c531d0c556c94c31cd71", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling scroll v0.9.2
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.15.6
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]    Compiling scroll_derive v0.9.5
[INFO] [stderr]     Checking goblin v0.0.17
[INFO] [stderr]     Checking skua v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> lib/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     error_chain! {
[INFO] [stdout] 13 | |         types {
[INFO] [stdout] 14 | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 15 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |         }
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> lib/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     error_chain! {
[INFO] [stdout] 13 | |         types {
[INFO] [stdout] 14 | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 15 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |         }
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> lib/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     error_chain! {
[INFO] [stdout] 13 | |         types {
[INFO] [stdout] 14 | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 15 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |         }
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> lib/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     error_chain! {
[INFO] [stdout] 13 | |         types {
[INFO] [stdout] 14 | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 15 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |         }
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> lib/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     error_chain! {
[INFO] [stdout] 13 | |         types {
[INFO] [stdout] 14 | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 15 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |         }
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> lib/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     error_chain! {
[INFO] [stdout] 13 | |         types {
[INFO] [stdout] 14 | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 15 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |         }
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | /     error_chain! {
[INFO] [stdout] 8  | |         types {
[INFO] [stdout] 9  | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 10 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |         }
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | /     error_chain! {
[INFO] [stdout] 8  | |         types {
[INFO] [stdout] 9  | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 10 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |         }
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | /     error_chain! {
[INFO] [stdout] 8  | |         types {
[INFO] [stdout] 9  | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 10 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |         }
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | /     error_chain! {
[INFO] [stdout] 8  | |         types {
[INFO] [stdout] 9  | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 10 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |         }
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/main.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | /     error_chain! {
[INFO] [stdout] 8  | |         types {
[INFO] [stdout] 9  | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 10 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |         }
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/main.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | /     error_chain! {
[INFO] [stdout] 8  | |         types {
[INFO] [stdout] 9  | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 10 | |         }
[INFO] [stdout] ...  |
[INFO] [stdout] 24 | |         }
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.73s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7fb863432fc0f436b746c851c5844bd553c8d4eeae04c531d0c556c94c31cd71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fb863432fc0f436b746c851c5844bd553c8d4eeae04c531d0c556c94c31cd71", kill_on_drop: false }`
[INFO] [stdout] 7fb863432fc0f436b746c851c5844bd553c8d4eeae04c531d0c556c94c31cd71