[INFO] fetching crate unwalk 0.2.0-beta1...
[INFO] testing unwalk-0.2.0-beta1 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate unwalk 0.2.0-beta1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate unwalk 0.2.0-beta1 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unwalk 0.2.0-beta1
[INFO] finished tweaking crates.io crate unwalk 0.2.0-beta1
[INFO] tweaked toml for crates.io crate unwalk 0.2.0-beta1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unwalk-gz v0.2.0-beta1
[INFO] [stderr]   Downloaded toml v0.4.5
[INFO] [stderr]   Downloaded unwalk-base v0.2.0-beta1
[INFO] [stderr]   Downloaded serde_derive_internals v0.23.0
[INFO] [stderr]   Downloaded structopt v0.2.6
[INFO] [stderr]   Downloaded structopt-derive v0.2.6
[INFO] [stderr]   Downloaded filebuffer v0.3.0
[INFO] [stderr]   Downloaded serde_derive v1.0.37
[INFO] [stderr]   Downloaded failure v0.1.1
[INFO] [stderr]   Downloaded serde v1.0.37
[INFO] [stderr]   Downloaded walkdir v2.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 394e2c7f34df6b8d68c7048fc653504c3e3a9f6ec3958bd5538bdd8c99c2935e
[INFO] running `Command { std: "docker" "start" "-a" "394e2c7f34df6b8d68c7048fc653504c3e3a9f6ec3958bd5538bdd8c99c2935e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "394e2c7f34df6b8d68c7048fc653504c3e3a9f6ec3958bd5538bdd8c99c2935e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "394e2c7f34df6b8d68c7048fc653504c3e3a9f6ec3958bd5538bdd8c99c2935e", kill_on_drop: false }`
[INFO] [stdout] 394e2c7f34df6b8d68c7048fc653504c3e3a9f6ec3958bd5538bdd8c99c2935e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f82d8d4028201621bc27e166159004fdadbabff7d49e301195c9e07310940ad2
[INFO] running `Command { std: "docker" "start" "-a" "f82d8d4028201621bc27e166159004fdadbabff7d49e301195c9e07310940ad2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling gimli v0.24.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling file v1.1.2
[INFO] [stderr]    Compiling serde v1.0.37
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling walkdir v2.1.4
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling object v0.25.3
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling filebuffer v0.3.0
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling serde_derive_internals v0.23.0
[INFO] [stderr]    Compiling addr2line v0.15.2
[INFO] [stderr]    Compiling structopt-derive v0.2.6
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling serde_derive v1.0.37
[INFO] [stderr]    Compiling toml v0.4.5
[INFO] [stderr]    Compiling structopt v0.2.6
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling unwalk-base v0.2.0-beta1
[INFO] [stdout] error[E0407]: method `name` is not a member of trait `failure::Fail`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unwalk-base-0.2.0-beta1/src/error.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[derive(Fail, Debug)]
[INFO] [stdout]   |          ^^^^ not a member of trait `failure::Fail`
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `_core` in `failure`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unwalk-base-0.2.0-beta1/src/error.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[derive(Fail, Debug)]
[INFO] [stdout]   |          ^^^^ could not find `_core` in `failure`
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `AsFail` in `failure`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unwalk-base-0.2.0-beta1/src/error.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[derive(Fail, Debug)]
[INFO] [stdout]   |          ^^^^ could not find `AsFail` in `failure`
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `name` is not a member of trait `failure::Fail`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unwalk-base-0.2.0-beta1/src/error.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 | #[derive(Fail, Debug)]
[INFO] [stdout]    |          ^^^^ not a member of trait `failure::Fail`
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `_core` in `failure`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unwalk-base-0.2.0-beta1/src/error.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 | #[derive(Fail, Debug)]
[INFO] [stdout]    |          ^^^^ could not find `_core` in `failure`
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `name` is not a member of trait `failure::Fail`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unwalk-base-0.2.0-beta1/src/error.rs:67:45
[INFO] [stdout]    |
[INFO] [stdout] 67 | #[derive(Copy, Clone, Eq, PartialEq, Debug, Fail)]
[INFO] [stdout]    |                                             ^^^^ not a member of trait `failure::Fail`
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `_core` in `failure`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unwalk-base-0.2.0-beta1/src/error.rs:67:45
[INFO] [stdout]    |
[INFO] [stdout] 67 | #[derive(Copy, Clone, Eq, PartialEq, Debug, Fail)]
[INFO] [stdout]    |                                             ^^^^ could not find `_core` in `failure`
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0407, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0407`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unwalk-base`
[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" "f82d8d4028201621bc27e166159004fdadbabff7d49e301195c9e07310940ad2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f82d8d4028201621bc27e166159004fdadbabff7d49e301195c9e07310940ad2", kill_on_drop: false }`
[INFO] [stdout] f82d8d4028201621bc27e166159004fdadbabff7d49e301195c9e07310940ad2