[INFO] updating cached repository av-elier/ar-hist
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/av-elier/ar-hist
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/av-elier/ar-hist" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/av-elier/ar-hist"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/av-elier/ar-hist'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/av-elier/ar-hist" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/av-elier/ar-hist"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/av-elier/ar-hist'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b74e78a8f86c3e68b89bf236f208aaa00d50bfd1
[INFO] sha for GitHub repo av-elier/ar-hist: b74e78a8f86c3e68b89bf236f208aaa00d50bfd1
[INFO] validating manifest of av-elier/ar-hist on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of av-elier/ar-hist on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing av-elier/ar-hist
[INFO] finished frobbing av-elier/ar-hist
[INFO] frobbed toml for av-elier/ar-hist written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/av-elier/ar-hist/Cargo.toml
[INFO] started frobbing av-elier/ar-hist
[INFO] finished frobbing av-elier/ar-hist
[INFO] frobbed toml for av-elier/ar-hist written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/av-elier/ar-hist/Cargo.toml
[INFO] crate av-elier/ar-hist already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking av-elier/ar-hist against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-6/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/av-elier/ar-hist:/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=forbid" "-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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e30a7833723747211ece7f9a9d3df01dc360531e7f2c4891daeeeae1f9d7b2f0
[INFO] running `"docker" "start" "-a" "e30a7833723747211ece7f9a9d3df01dc360531e7f2c4891daeeeae1f9d7b2f0"`
[INFO] [stderr]     Checking fallible-iterator v0.1.4
[INFO] [stderr]     Checking md5 v0.3.7
[INFO] [stderr]     Checking termcolor v0.3.3
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[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking relay v0.1.1
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[INFO] [stderr]     Checking futures-cpupool v0.1.8
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[INFO] [stderr]    Compiling openssl v0.9.23
[INFO] [stderr]     Checking postgres-protocol v0.3.1
[INFO] [stderr]     Checking tokio-core v0.1.12
[INFO] [stderr]     Checking env_logger v0.5.3
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[INFO] [stderr]     Checking ar-hist v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_types.rs:85:55
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn try_lifetime_percent(&self) -> Result<f64, Box<Error>> {
[INFO] [stderr]    |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[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/ar_http.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 | ) -> Result<Box<Future<Item = Vec<T>, Error = HError>>, Box<Error>>
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = Vec<T>, Error = HError>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_http.rs:15:61
[INFO] [stderr]    |
[INFO] [stderr] 15 | ) -> Result<Box<Future<Item = Vec<T>, Error = HError>>, Box<Error>>
[INFO] [stderr]    |                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_http.rs:55:25
[INFO] [stderr]    |
[INFO] [stderr] 55 | ) -> Result<Vec<T>, Box<Error>>
[INFO] [stderr]    |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_http.rs:64:71
[INFO] [stderr]    |
[INFO] [stderr] 64 | pub fn get_ar_json_vec<T>(status: Option<&str>) -> Result<Vec<T>, Box<Error>>
[INFO] [stderr]    |                                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_store.rs:10:70
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn get_key_and_value<T>(ins: Vec<T>) -> Result<(String, String), Box<Error>>
[INFO] [stderr]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_store.rs:19:68
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn save_initiatives_to_redis<T>(ins: Vec<T>) -> Result<(), Box<Error>>
[INFO] [stderr]    |                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_store.rs:37:89
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub fn save_initiatives_to_postgres<T>(ins: Vec<T>, table_name: &str) -> Result<(), Box<Error>>
[INFO] [stderr]    |                                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/ar_filter.rs:5:91
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn filter_spahshots(orig: Vec<(String, String)>) -> Result<Vec<(String, String)>, Box<Error>> {
[INFO] [stderr]   |                                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_filter.rs:11:71
[INFO] [stderr]    |
[INFO] [stderr] 11 |         |_: (), &(ref k, ref v): &(String, String)| -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_filter.rs:23:65
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn merge_str(all: &str, latest: &str) -> Result<String, Box<Error>> {
[INFO] [stderr]    |                                                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_pg.rs:11:38
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new() -> Result<ArPg, Box<Error>> {
[INFO] [stderr]    |                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_pg.rs:26:85
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn get_kv_postgres(&self, table: &str) -> Result<Vec<(String, String)>, Box<Error>> {
[INFO] [stderr]    |                                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_pg.rs:47:25
[INFO] [stderr]    |
[INFO] [stderr] 47 |     ) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_pg.rs:71:83
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn get_kv_merged(&self, table: &str) -> Result<Vec<(String, String)>, Box<Error>> {
[INFO] [stderr]    |                                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subcmds/download.rs:10:61
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn call(matches: ArgMatches<'static>) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subcmds/download.rs:19:76
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn download_initiatives<T>(matches: ArgMatches<'static>) -> Result<(), Box<Error>>
[INFO] [stderr]    |                                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/subcmds/migrate.rs:6:52
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn call(matches: ArgMatches) -> Result<(), Box<Error>> {
[INFO] [stderr]   |                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/subcmds/analyze.rs:9:52
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn call(matches: ArgMatches) -> Result<(), Box<Error>> {
[INFO] [stderr]   |                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subcmds/analyze.rs:18:66
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn call_internal(pg: ar_pg::ArPg, table: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/subcmds/analyze.rs:137:66
[INFO] [stderr]     |
[INFO] [stderr] 137 |     fn parse(k: String, v: String) -> Result<Vec<Essential>, Box<Error>> {
[INFO] [stderr]     |                                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_types.rs:85:55
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn try_lifetime_percent(&self) -> Result<f64, Box<Error>> {
[INFO] [stderr]    |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[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/ar_http.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 | ) -> Result<Box<Future<Item = Vec<T>, Error = HError>>, Box<Error>>
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = Vec<T>, Error = HError>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_http.rs:15:61
[INFO] [stderr]    |
[INFO] [stderr] 15 | ) -> Result<Box<Future<Item = Vec<T>, Error = HError>>, Box<Error>>
[INFO] [stderr]    |                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_http.rs:55:25
[INFO] [stderr]    |
[INFO] [stderr] 55 | ) -> Result<Vec<T>, Box<Error>>
[INFO] [stderr]    |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_http.rs:64:71
[INFO] [stderr]    |
[INFO] [stderr] 64 | pub fn get_ar_json_vec<T>(status: Option<&str>) -> Result<Vec<T>, Box<Error>>
[INFO] [stderr]    |                                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_store.rs:10:70
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn get_key_and_value<T>(ins: Vec<T>) -> Result<(String, String), Box<Error>>
[INFO] [stderr]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_store.rs:19:68
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn save_initiatives_to_redis<T>(ins: Vec<T>) -> Result<(), Box<Error>>
[INFO] [stderr]    |                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_store.rs:37:89
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub fn save_initiatives_to_postgres<T>(ins: Vec<T>, table_name: &str) -> Result<(), Box<Error>>
[INFO] [stderr]    |                                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/ar_filter.rs:5:91
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn filter_spahshots(orig: Vec<(String, String)>) -> Result<Vec<(String, String)>, Box<Error>> {
[INFO] [stderr]   |                                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_filter.rs:11:71
[INFO] [stderr]    |
[INFO] [stderr] 11 |         |_: (), &(ref k, ref v): &(String, String)| -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_filter.rs:23:65
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn merge_str(all: &str, latest: &str) -> Result<String, Box<Error>> {
[INFO] [stderr]    |                                                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_pg.rs:11:38
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new() -> Result<ArPg, Box<Error>> {
[INFO] [stderr]    |                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_pg.rs:26:85
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn get_kv_postgres(&self, table: &str) -> Result<Vec<(String, String)>, Box<Error>> {
[INFO] [stderr]    |                                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_pg.rs:47:25
[INFO] [stderr]    |
[INFO] [stderr] 47 |     ) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                         ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ar_pg.rs:71:83
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn get_kv_merged(&self, table: &str) -> Result<Vec<(String, String)>, Box<Error>> {
[INFO] [stderr]    |                                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subcmds/download.rs:10:61
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn call(matches: ArgMatches<'static>) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subcmds/download.rs:19:76
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn download_initiatives<T>(matches: ArgMatches<'static>) -> Result<(), Box<Error>>
[INFO] [stderr]    |                                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/subcmds/migrate.rs:6:52
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn call(matches: ArgMatches) -> Result<(), Box<Error>> {
[INFO] [stderr]   |                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/subcmds/analyze.rs:9:52
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn call(matches: ArgMatches) -> Result<(), Box<Error>> {
[INFO] [stderr]   |                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subcmds/analyze.rs:18:66
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn call_internal(pg: ar_pg::ArPg, table: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/subcmds/analyze.rs:137:66
[INFO] [stderr]     |
[INFO] [stderr] 137 |     fn parse(k: String, v: String) -> Result<Vec<Essential>, Box<Error>> {
[INFO] [stderr]     |                                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/subcmds/analyze.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |         let mut ess = &mut essentials[i];
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iterator_try_fold` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(iterator_try_fold)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/subcmds/analyze.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |         let mut ess = &mut essentials[i];
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iterator_try_fold` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(iterator_try_fold)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.07s
[INFO] running `"docker" "inspect" "e30a7833723747211ece7f9a9d3df01dc360531e7f2c4891daeeeae1f9d7b2f0"`
[INFO] running `"docker" "rm" "-f" "e30a7833723747211ece7f9a9d3df01dc360531e7f2c4891daeeeae1f9d7b2f0"`
[INFO] [stdout] e30a7833723747211ece7f9a9d3df01dc360531e7f2c4891daeeeae1f9d7b2f0