[INFO] updating cached repository https://github.com/yoan-durand/clir
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/yoan-durand/clir
[INFO] [stderr]  - [deleted]         (none)     -> dependabot/cargo/structopt-0.3.2
[INFO] [stderr]    3c2493b..df84e7a  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] df84e7a9484f823348268ef0ddb530dd712f18b7
[INFO] testing yoan-durand/clir against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyoan-durand%2Fclir" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yoan-durand/clir on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/yoan-durand/clir
[INFO] finished tweaking git repo https://github.com/yoan-durand/clir
[INFO] tweaked toml for git repo https://github.com/yoan-durand/clir written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/yoan-durand/clir already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 11b9cbc7e124b714c6be6b0c4b53c752f0b993d07f0e437f0ca5cffcb7982cfe
[INFO] running `"docker" "start" "-a" "11b9cbc7e124b714c6be6b0c4b53c752f0b993d07f0e437f0ca5cffcb7982cfe"`
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling structopt-derive v0.3.2
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling exitfailure v0.5.1
[INFO] [stderr]    Compiling structopt v0.3.2
[INFO] [stderr]    Compiling clir v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no method named `with_context` found for type `std::result::Result<std::string::String, std::io::Error>` in the current scope
[INFO] [stderr]   --> src/main.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 |         .with_context(|_| format!("could not read file `{}`", path))?;
[INFO] [stderr]    |          ^^^^^^^^^^^^ method not found in `std::result::Result<std::string::String, std::io::Error>`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the trait is in scope
[INFO] [stderr] help: the following trait is implemented but not in scope, perhaps add a `use` for it:
[INFO] [stderr]    |
[INFO] [stderr] 1  | use failure::result_ext::ResultExt;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `clir`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "11b9cbc7e124b714c6be6b0c4b53c752f0b993d07f0e437f0ca5cffcb7982cfe"`
[INFO] running `"docker" "rm" "-f" "11b9cbc7e124b714c6be6b0c4b53c752f0b993d07f0e437f0ca5cffcb7982cfe"`
[INFO] [stdout] 11b9cbc7e124b714c6be6b0c4b53c752f0b993d07f0e437f0ca5cffcb7982cfe