[INFO] fetching crate narnia 0.1.0...
[INFO] checking narnia-0.1.0 against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] extracting crate narnia 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate narnia 0.1.0 on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate narnia 0.1.0
[INFO] finished tweaking crates.io crate narnia 0.1.0
[INFO] tweaked toml for crates.io crate narnia 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-rustls v0.5.0
[INFO] [stderr]   Downloaded webpki-roots v0.14.0
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[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 008367bcd9a6600490741d87682ac0531fd622af4ddcbfe80c31ddd97e61ae72
[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" "008367bcd9a6600490741d87682ac0531fd622af4ddcbfe80c31ddd97e61ae72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "008367bcd9a6600490741d87682ac0531fd622af4ddcbfe80c31ddd97e61ae72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "008367bcd9a6600490741d87682ac0531fd622af4ddcbfe80c31ddd97e61ae72", kill_on_drop: false }`
[INFO] [stdout] 008367bcd9a6600490741d87682ac0531fd622af4ddcbfe80c31ddd97e61ae72
[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=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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e52bd90286de0ab5676f4de12ca88bcfc89ada5b58828225e591cf1dc39d7a1
[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" "4e52bd90286de0ab5676f4de12ca88bcfc89ada5b58828225e591cf1dc39d7a1", kill_on_drop: false }`
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[INFO] [stderr]     Checking webpki-roots v0.14.0
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[INFO] [stderr]     Checking tokio-rustls v0.5.0
[INFO] [stderr]     Checking hyper v0.11.27
[INFO] [stderr]     Checking narnia v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     error_chain! {
[INFO] [stdout] 24 | |         foreign_links {
[INFO] [stdout] 25 | |             Io(std::io::Error);
[INFO] [stdout] 26 | |             AddrParse(std::net::AddrParseError);
[INFO] [stdout] 27 | |             Toml(toml::de::Error);
[INFO] [stdout] 28 | |         }
[INFO] [stdout] 29 | |     }
[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 associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     error_chain! {
[INFO] [stdout] 24 | |         foreign_links {
[INFO] [stdout] 25 | |             Io(std::io::Error);
[INFO] [stdout] 26 | |             AddrParse(std::net::AddrParseError);
[INFO] [stdout] 27 | |             Toml(toml::de::Error);
[INFO] [stdout] 28 | |         }
[INFO] [stdout] 29 | |     }
[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] error[E0034]: multiple applicable items in scope
[INFO] [stdout]   --> src/sandbox/ipc.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 |         .reduce(|x, y| x + "," + &y)
[INFO] [stdout]    |          ^^^^^^ multiple `reduce` found
[INFO] [stdout]    |
[INFO] [stdout]    = note: candidate #1 is defined in an impl of the trait `Iterator` for the type `std::iter::Map<I, F>`
[INFO] [stdout]    = note: candidate #2 is defined in an impl of the trait `Reduce` for the type `I`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let hook_list = Iterator::reduce(config.hooks.keys()
[INFO] [stdout] 29 |         .map(|x| x.to_owned()), |x, y| x + "," + &y)
[INFO] [stdout]    |
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let hook_list = Reduce::reduce(config.hooks.keys()
[INFO] [stdout] 29 |         .map(|x| x.to_owned()), |x, y| x + "," + &y)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     error_chain! {
[INFO] [stdout] 24 | |         foreign_links {
[INFO] [stdout] 25 | |             Io(std::io::Error);
[INFO] [stdout] 26 | |             AddrParse(std::net::AddrParseError);
[INFO] [stdout] 27 | |             Toml(toml::de::Error);
[INFO] [stdout] 28 | |         }
[INFO] [stdout] 29 | |     }
[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: unused import: `reduce::Reduce`
[INFO] [stdout]  --> src/sandbox/ipc.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use reduce::Reduce;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `narnia`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4e52bd90286de0ab5676f4de12ca88bcfc89ada5b58828225e591cf1dc39d7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e52bd90286de0ab5676f4de12ca88bcfc89ada5b58828225e591cf1dc39d7a1", kill_on_drop: false }`
[INFO] [stdout] 4e52bd90286de0ab5676f4de12ca88bcfc89ada5b58828225e591cf1dc39d7a1