[INFO] updating cached repository indiv0/ferru
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/indiv0/ferru
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/indiv0/ferru" "work/ex/beta-1.38-1/sources/1.37.0/gh/indiv0/ferru"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/indiv0/ferru'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/indiv0/ferru" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/indiv0/ferru"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/indiv0/ferru'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2a10b40ac089f6e421c0a44c23c245a4e2952661
[INFO] sha for GitHub repo indiv0/ferru: 2a10b40ac089f6e421c0a44c23c245a4e2952661
[INFO] validating manifest of indiv0/ferru on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of indiv0/ferru on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing indiv0/ferru
[INFO] finished frobbing indiv0/ferru
[INFO] frobbed toml for indiv0/ferru written to work/ex/beta-1.38-1/sources/1.37.0/gh/indiv0/ferru/Cargo.toml
[INFO] started frobbing indiv0/ferru
[INFO] finished frobbing indiv0/ferru
[INFO] frobbed toml for indiv0/ferru written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/indiv0/ferru/Cargo.toml
[INFO] crate indiv0/ferru already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing indiv0/ferru against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/indiv0/ferru:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 8f3efdb3b31196f07174df83aa5535af01adad240c31a30821e528fefde63093
[INFO] running `"docker" "start" "-a" "8f3efdb3b31196f07174df83aa5535af01adad240c31a30821e528fefde63093"`
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling atty v0.2.6
[INFO] [stderr]    Compiling serde_yaml v0.7.3
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling mustache v0.7.0
[INFO] [stderr]    Compiling clap v2.30.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling ferru v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:108:32
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn cause(&self) -> Option<&StdError> {
[INFO] [stderr]     |                                ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/error.rs:41:32
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn cause(&self) -> Option<&StdError> {
[INFO] [stderr]    |                                ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/error.rs:110:40
[INFO] [stderr]     |
[INFO] [stderr] 110 |             Error::IoError(ref e) => e.cause(),
[INFO] [stderr]     |                                        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/error.rs:111:46
[INFO] [stderr]     |
[INFO] [stderr] 111 |             Error::MustacheError(ref e) => e.cause(),
[INFO] [stderr]     |                                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/error.rs:112:44
[INFO] [stderr]     |
[INFO] [stderr] 112 |             Error::ParserError(ref e) => e.cause(),
[INFO] [stderr]     |                                            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/error.rs:113:49
[INFO] [stderr]     |
[INFO] [stderr] 113 |             Error::StripPrefixError(ref e) => e.cause(),
[INFO] [stderr]     |                                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/parser/error.rs:43:43
[INFO] [stderr]    |
[INFO] [stderr] 43 |             Error::SerdeError(ref e) => e.cause(),
[INFO] [stderr]    |                                           ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.96s
[INFO] running `"docker" "inspect" "8f3efdb3b31196f07174df83aa5535af01adad240c31a30821e528fefde63093"`
[INFO] running `"docker" "rm" "-f" "8f3efdb3b31196f07174df83aa5535af01adad240c31a30821e528fefde63093"`
[INFO] [stdout] 8f3efdb3b31196f07174df83aa5535af01adad240c31a30821e528fefde63093
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/indiv0/ferru:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 696eb1de35da95732bf6cec4622acc2a8e9b84fc72aa20d7b64f5272455e2bca
[INFO] running `"docker" "start" "-a" "696eb1de35da95732bf6cec4622acc2a8e9b84fc72aa20d7b64f5272455e2bca"`
[INFO] [stderr]    Compiling ferru v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `parser::yaml_rust`
[INFO] [stderr]   --> src/parser/mod.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |     use parser::yaml_rust::Yaml;
[INFO] [stderr]    |                 ^^^^^^^^^ could not find `yaml_rust` in `parser`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:108:32
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn cause(&self) -> Option<&StdError> {
[INFO] [stderr]     |                                ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/error.rs:41:32
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn cause(&self) -> Option<&StdError> {
[INFO] [stderr]    |                                ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/error.rs:110:40
[INFO] [stderr]     |
[INFO] [stderr] 110 |             Error::IoError(ref e) => e.cause(),
[INFO] [stderr]     |                                        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/error.rs:111:46
[INFO] [stderr]     |
[INFO] [stderr] 111 |             Error::MustacheError(ref e) => e.cause(),
[INFO] [stderr]     |                                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/error.rs:112:44
[INFO] [stderr]     |
[INFO] [stderr] 112 |             Error::ParserError(ref e) => e.cause(),
[INFO] [stderr]     |                                            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/error.rs:113:49
[INFO] [stderr]     |
[INFO] [stderr] 113 |             Error::StripPrefixError(ref e) => e.cause(),
[INFO] [stderr]     |                                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `InvalidHeaderFormat` found for type `parser::error::Error` in the current scope
[INFO] [stderr]   --> src/parser/mod.rs:65:24
[INFO] [stderr]    |
[INFO] [stderr] 65 |             Err(Error::InvalidHeaderFormat("a".to_owned()))
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^ variant or associated item not found in `parser::error::Error`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/parser/error.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum Error {
[INFO] [stderr]    | -------------- variant or associated item `InvalidHeaderFormat` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `InvalidHeaderFormat` found for type `parser::error::Error` in the current scope
[INFO] [stderr]   --> src/parser/mod.rs:69:24
[INFO] [stderr]    |
[INFO] [stderr] 69 |             Err(Error::InvalidHeaderFormat("a ".to_owned()))
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^ variant or associated item not found in `parser::error::Error`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/parser/error.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum Error {
[INFO] [stderr]    | -------------- variant or associated item `InvalidHeaderFormat` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `InvalidHeaderKey` found for type `parser::error::Error` in the current scope
[INFO] [stderr]   --> src/parser/mod.rs:73:24
[INFO] [stderr]    |
[INFO] [stderr] 73 |             Err(Error::InvalidHeaderKey(Yaml::Null))
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^ variant or associated item not found in `parser::error::Error`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/parser/error.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum Error {
[INFO] [stderr]    | -------------- variant or associated item `InvalidHeaderKey` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `InvalidHeaderKey` found for type `parser::error::Error` in the current scope
[INFO] [stderr]   --> src/parser/mod.rs:77:24
[INFO] [stderr]    |
[INFO] [stderr] 77 |             Err(Error::InvalidHeaderKey(Yaml::Null))
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^ variant or associated item not found in `parser::error::Error`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/parser/error.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum Error {
[INFO] [stderr]    | -------------- variant or associated item `InvalidHeaderKey` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `InvalidHeaderFormat` found for type `parser::error::Error` in the current scope
[INFO] [stderr]   --> src/parser/mod.rs:81:24
[INFO] [stderr]    |
[INFO] [stderr] 81 |             Err(Error::InvalidHeaderFormat("title:sometitle".to_owned()))
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^ variant or associated item not found in `parser::error::Error`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/parser/error.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum Error {
[INFO] [stderr]    | -------------- variant or associated item `InvalidHeaderFormat` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `InvalidHeaderKey` found for type `parser::error::Error` in the current scope
[INFO] [stderr]   --> src/parser/mod.rs:85:24
[INFO] [stderr]    |
[INFO] [stderr] 85 |             Err(Error::InvalidHeaderKey(Yaml::Integer(1234)))
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^ variant or associated item not found in `parser::error::Error`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/parser/error.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum Error {
[INFO] [stderr]    | -------------- variant or associated item `InvalidHeaderKey` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `InvalidHeaderValue` found for type `parser::error::Error` in the current scope
[INFO] [stderr]   --> src/parser/mod.rs:93:24
[INFO] [stderr]    |
[INFO] [stderr] 93 |             Err(Error::InvalidHeaderValue(Yaml::Null))
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^ variant or associated item not found in `parser::error::Error`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/parser/error.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum Error {
[INFO] [stderr]    | -------------- variant or associated item `InvalidHeaderValue` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `InvalidHeaderValue` found for type `parser::error::Error` in the current scope
[INFO] [stderr]   --> src/parser/mod.rs:97:24
[INFO] [stderr]    |
[INFO] [stderr] 97 |             Err(Error::InvalidHeaderValue(Yaml::Null))
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^ variant or associated item not found in `parser::error::Error`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/parser/error.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum Error {
[INFO] [stderr]    | -------------- variant or associated item `InvalidHeaderValue` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no variant or associated item named `InvalidHeaderValue` found for type `parser::error::Error` in the current scope
[INFO] [stderr]    --> src/parser/mod.rs:101:24
[INFO] [stderr]     |
[INFO] [stderr] 101 |             Err(Error::InvalidHeaderValue(Yaml::Integer(1234)))
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^ variant or associated item not found in `parser::error::Error`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/parser/error.rs:21:1
[INFO] [stderr]     |
[INFO] [stderr] 21  | pub enum Error {
[INFO] [stderr]     | -------------- variant or associated item `InvalidHeaderValue` not found here
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: can't compare `std::result::Result<std::collections::BTreeMap<std::string::String, std::string::String>, parser::error::Error>` with `std::result::Result<std::collections::HashMap<std::string::String, std::string::String>, _>`
[INFO] [stderr]    --> src/parser/mod.rs:114:9
[INFO] [stderr]     |
[INFO] [stderr] 114 |         assert_eq!(&parse_header("title: sometitle\ndate: 2014-01-01"), &map);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no implementation for `std::result::Result<std::collections::BTreeMap<std::string::String, std::string::String>, parser::error::Error> == std::result::Result<std::collections::HashMap<std::string::String, std::string::String>, _>`
[INFO] [stderr]     |
[INFO] [stderr]     = help: the trait `std::cmp::PartialEq<std::result::Result<std::collections::HashMap<std::string::String, std::string::String>, _>>` is not implemented for `std::result::Result<std::collections::BTreeMap<std::string::String, std::string::String>, parser::error::Error>`
[INFO] [stderr]     = note: required because of the requirements on the impl of `std::cmp::PartialEq<&std::result::Result<std::collections::HashMap<std::string::String, std::string::String>, _>>` for `&std::result::Result<std::collections::BTreeMap<std::string::String, std::string::String>, parser::error::Error>`
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: can't compare `std::result::Result<std::collections::BTreeMap<std::string::String, std::string::String>, parser::error::Error>` with `std::result::Result<std::collections::HashMap<std::string::String, std::string::String>, _>`
[INFO] [stderr]    --> src/parser/mod.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         assert_eq!(&parse_header("title: sometitle\ndate: 2014-01-01\n"), &map);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no implementation for `std::result::Result<std::collections::BTreeMap<std::string::String, std::string::String>, parser::error::Error> == std::result::Result<std::collections::HashMap<std::string::String, std::string::String>, _>`
[INFO] [stderr]     |
[INFO] [stderr]     = help: the trait `std::cmp::PartialEq<std::result::Result<std::collections::HashMap<std::string::String, std::string::String>, _>>` is not implemented for `std::result::Result<std::collections::BTreeMap<std::string::String, std::string::String>, parser::error::Error>`
[INFO] [stderr]     = note: required because of the requirements on the impl of `std::cmp::PartialEq<&std::result::Result<std::collections::HashMap<std::string::String, std::string::String>, _>>` for `&std::result::Result<std::collections::BTreeMap<std::string::String, std::string::String>, parser::error::Error>`
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/parser/mod.rs:120:57
[INFO] [stderr]     |
[INFO] [stderr] 120 |         assert_eq!(parse_document(""), Ok(Document::new(HashMap::new(), "")));
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^^^ expected struct `std::collections::BTreeMap`, found struct `std::collections::HashMap`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::collections::BTreeMap<std::string::String, std::string::String>`
[INFO] [stderr]                found type `std::collections::HashMap<_, _>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/parser/mod.rs:125:62
[INFO] [stderr]     |
[INFO] [stderr] 125 |         assert_eq!(parse_document("---\n"), Ok(Document::new(HashMap::new(), "")));
[INFO] [stderr]     |                                                              ^^^^^^^^^^^^^^ expected struct `std::collections::BTreeMap`, found struct `std::collections::HashMap`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::collections::BTreeMap<std::string::String, std::string::String>`
[INFO] [stderr]                found type `std::collections::HashMap<_, _>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/parser/mod.rs:126:64
[INFO] [stderr]     |
[INFO] [stderr] 126 |         assert_eq!(parse_document("\n---\n"), Ok(Document::new(HashMap::new(), "")));
[INFO] [stderr]     |                                                                ^^^^^^^^^^^^^^ expected struct `std::collections::BTreeMap`, found struct `std::collections::HashMap`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::collections::BTreeMap<std::string::String, std::string::String>`
[INFO] [stderr]                found type `std::collections::HashMap<_, _>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/parser/mod.rs:127:63
[INFO] [stderr]     |
[INFO] [stderr] 127 |         assert_eq!(parse_document(" ---\n"), Ok(Document::new(HashMap::new(), "")));
[INFO] [stderr]     |                                                               ^^^^^^^^^^^^^^ expected struct `std::collections::BTreeMap`, found struct `std::collections::HashMap`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::collections::BTreeMap<std::string::String, std::string::String>`
[INFO] [stderr]                found type `std::collections::HashMap<_, _>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/parser/mod.rs:132:81
[INFO] [stderr]     |
[INFO] [stderr] 132 |         assert_eq!(parse_document("---\nsome random content"), Ok(Document::new(HashMap::new(), "some random content")));
[INFO] [stderr]     |                                                                                 ^^^^^^^^^^^^^^ expected struct `std::collections::BTreeMap`, found struct `std::collections::HashMap`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::collections::BTreeMap<std::string::String, std::string::String>`
[INFO] [stderr]                found type `std::collections::HashMap<_, _>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/parser/mod.rs:133:83
[INFO] [stderr]     |
[INFO] [stderr] 133 |         assert_eq!(parse_document("\n---\nsome random content"), Ok(Document::new(HashMap::new(), "some random content")));
[INFO] [stderr]     |                                                                                   ^^^^^^^^^^^^^^ expected struct `std::collections::BTreeMap`, found struct `std::collections::HashMap`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::collections::BTreeMap<std::string::String, std::string::String>`
[INFO] [stderr]                found type `std::collections::HashMap<_, _>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/parser/mod.rs:134:82
[INFO] [stderr]     |
[INFO] [stderr] 134 |         assert_eq!(parse_document(" ---\nsome random content"), Ok(Document::new(HashMap::new(), "some random content")));
[INFO] [stderr]     |                                                                                  ^^^^^^^^^^^^^^ expected struct `std::collections::BTreeMap`, found struct `std::collections::HashMap`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::collections::BTreeMap<std::string::String, std::string::String>`
[INFO] [stderr]                found type `std::collections::HashMap<_, _>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/parser/mod.rs:145:79
[INFO] [stderr]     |
[INFO] [stderr] 145 |         assert_eq!(parse_document("title: my title\n---\n"), Ok(Document::new(header, "")));
[INFO] [stderr]     |                                                                               ^^^^^^ expected struct `std::collections::BTreeMap`, found struct `std::collections::HashMap`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::collections::BTreeMap<std::string::String, std::string::String>`
[INFO] [stderr]                found type `std::collections::HashMap<std::string::String, std::string::String>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/parser/mod.rs:159:34
[INFO] [stderr]     |
[INFO] [stderr] 159 |         let post = Document::new(header, "this is a post.\nwith multiple lines!");
[INFO] [stderr]     |                                  ^^^^^^ expected struct `std::collections::BTreeMap`, found struct `std::collections::HashMap`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::collections::BTreeMap<std::string::String, std::string::String>`
[INFO] [stderr]                found type `std::collections::HashMap<std::string::String, std::string::String>`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/parser/error.rs:43:43
[INFO] [stderr]    |
[INFO] [stderr] 43 |             Error::SerdeError(ref e) => e.cause(),
[INFO] [stderr]    |                                           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 21 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0308, E0432, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `ferru`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "696eb1de35da95732bf6cec4622acc2a8e9b84fc72aa20d7b64f5272455e2bca"`
[INFO] running `"docker" "rm" "-f" "696eb1de35da95732bf6cec4622acc2a8e9b84fc72aa20d7b64f5272455e2bca"`
[INFO] [stdout] 696eb1de35da95732bf6cec4622acc2a8e9b84fc72aa20d7b64f5272455e2bca