[INFO] crate s3handler 0.2.3 is already in cache
[INFO] extracting crate s3handler 0.2.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/s3handler/0.2.3
[INFO] extracting crate s3handler 0.2.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/s3handler/0.2.3
[INFO] validating manifest of s3handler-0.2.3 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 s3handler-0.2.3 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 s3handler-0.2.3
[INFO] finished frobbing s3handler-0.2.3
[INFO] frobbed toml for s3handler-0.2.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/s3handler/0.2.3/Cargo.toml
[INFO] started frobbing s3handler-0.2.3
[INFO] finished frobbing s3handler-0.2.3
[INFO] frobbed toml for s3handler-0.2.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/s3handler/0.2.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing s3handler-0.2.3 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/s3handler/0.2.3:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] eeb0aa675a994b910cabcb363fa8fc6bfb294e7ca0ea087600585c43386ed5b9
[INFO] running `"docker" "start" "-a" "eeb0aa675a994b910cabcb363fa8fc6bfb294e7ca0ea087600585c43386ed5b9"`
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling try-lock v0.1.0
[INFO] [stderr]    Compiling constant_time_eq v0.1.4
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling md5 v0.3.8
[INFO] [stderr]    Compiling relay v0.1.1
[INFO] [stderr]    Compiling hmac-sha1 v0.1.3
[INFO] [stderr]    Compiling want v0.2.0
[INFO] [stderr]    Compiling want v0.0.4
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling crypto-mac v0.4.0
[INFO] [stderr]    Compiling block-buffer v0.2.0
[INFO] [stderr]    Compiling digest v0.6.2
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling hmac v0.4.2
[INFO] [stderr]    Compiling cookie_store v0.7.0
[INFO] [stderr]    Compiling quick-xml v0.12.4
[INFO] [stderr]    Compiling sha2 v0.6.0
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling winconsole v0.10.0
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling colored v1.8.0
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling hyper v0.12.33
[INFO] [stderr]    Compiling hyper v0.11.27
[INFO] [stderr]    Compiling hyper-tls v0.3.2
[INFO] [stderr]    Compiling reqwest v0.9.20
[INFO] [stderr]    Compiling s3handler v0.2.3 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `LevelFilter`
[INFO] [stderr]   --> src/lib.rs:14:18
[INFO] [stderr]    |
[INFO] [stderr] 14 | use log::{Level, LevelFilter, Metadata, Record};
[INFO] [stderr]    |                  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]    --> src/aws.rs:101:93
[INFO] [stderr]     |
[INFO] [stderr] 101 |             Some(r) => string_to_signed.push_str(&format!("{}/{}/{}/aws4_request", time_str.slice_unchecked(0,8), r, endpoint_type)),
[INFO] [stderr]     |                                                                                             ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]    --> src/aws.rs:102:97
[INFO] [stderr]     |
[INFO] [stderr] 102 |             None => string_to_signed.push_str(&format!("{}/us-east-1/{}/aws4_request", time_str.slice_unchecked(0,8), endpoint_type))
[INFO] [stderr]     |                                                                                                 ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `content` is never read
[INFO] [stderr]    --> src/lib.rs:810:13
[INFO] [stderr]     |
[INFO] [stderr] 810 |             content = vec![83, 51, 82, 83, 32, 116, 101, 115, 116, 10]; // S3RS test/n
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:621:21
[INFO] [stderr]     |
[INFO] [stderr] 621 |                 let mut uri: String;
[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: variable does not need to be mutable
[INFO] [stderr]     --> src/lib.rs:1399:13
[INFO] [stderr]      |
[INFO] [stderr] 1399 |         let mut uri = format!("/admin/bucket");
[INFO] [stderr]      |             ----^^^
[INFO] [stderr]      |             |
[INFO] [stderr]      |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `MY_LOGGER`
[INFO] [stderr]   --> src/lib.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | static MY_LOGGER: MyLogger = MyLogger;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MyLogger`
[INFO] [stderr]   --> src/lib.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct MyLogger;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:959:33
[INFO] [stderr]     |
[INFO] [stderr] 959 | /                                 self.aws_v4_request(
[INFO] [stderr] 960 | |                                     "POST",
[INFO] [stderr] 961 | |                                     None,
[INFO] [stderr] 962 | |                                     &uri,
[INFO] [stderr] ...   |
[INFO] [stderr] 965 | |                                     content.into_bytes(),
[INFO] [stderr] 966 | |                                 );
[INFO] [stderr]     | |__________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:969:33
[INFO] [stderr]     |
[INFO] [stderr] 969 | /                                 self.aws_v2_request(
[INFO] [stderr] 970 | |                                     "POST",
[INFO] [stderr] 971 | |                                     &uri,
[INFO] [stderr] 972 | |                                     &vec![("uploadId", upload_id.as_str())],
[INFO] [stderr] 973 | |                                     &Vec::new(),
[INFO] [stderr] 974 | |                                     &content.into_bytes(),
[INFO] [stderr] 975 | |                                 );
[INFO] [stderr]     | |__________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:991:25
[INFO] [stderr]     |
[INFO] [stderr] 991 |                         self.aws_v4_request("PUT", None, &uri, &Vec::new(), &Vec::new(), content);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:994:25
[INFO] [stderr]     |
[INFO] [stderr] 994 |                         self.aws_v2_request("PUT", &uri, &Vec::new(), &Vec::new(), &content);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1163:9
[INFO] [stderr]      |
[INFO] [stderr] 1163 | /         match self.auth_type {
[INFO] [stderr] 1164 | |             AuthType::AWS4 => self.aws_v4_request(
[INFO] [stderr] 1165 | |                 "DELETE",
[INFO] [stderr] 1166 | |                 virtural_host,
[INFO] [stderr] ...    |
[INFO] [stderr] 1178 | |             ),
[INFO] [stderr] 1179 | |         };
[INFO] [stderr]      | |__________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1194:17
[INFO] [stderr]      |
[INFO] [stderr] 1194 |                 self.aws_v4_request("PUT", None, &uri, &Vec::new(), &Vec::new(), Vec::new());
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1197:17
[INFO] [stderr]      |
[INFO] [stderr] 1197 |                 self.aws_v2_request("PUT", &uri, &Vec::new(), &Vec::new(), &Vec::new());
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1211:17
[INFO] [stderr]      |
[INFO] [stderr] 1211 |                 self.aws_v4_request("DELETE", None, &uri, &Vec::new(), &Vec::new(), Vec::new());
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1214:17
[INFO] [stderr]      |
[INFO] [stderr] 1214 |                 self.aws_v2_request("DELETE", &uri, &Vec::new(), &Vec::new(), &Vec::new());
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1323:17
[INFO] [stderr]      |
[INFO] [stderr] 1323 | /                 self.aws_v4_request(
[INFO] [stderr] 1324 | |                     "PUT",
[INFO] [stderr] 1325 | |                     virtural_host,
[INFO] [stderr] 1326 | |                     &uri,
[INFO] [stderr] ...    |
[INFO] [stderr] 1329 | |                     content.into_bytes(),
[INFO] [stderr] 1330 | |                 );
[INFO] [stderr]      | |__________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1333:17
[INFO] [stderr]      |
[INFO] [stderr] 1333 | /                 self.aws_v2_request(
[INFO] [stderr] 1334 | |                     "PUT",
[INFO] [stderr] 1335 | |                     &format!("/{}{}", &caps["bucket"], &caps["object"]),
[INFO] [stderr] 1336 | |                     &query_string,
[INFO] [stderr] 1337 | |                     &Vec::new(),
[INFO] [stderr] 1338 | |                     &content.into_bytes(),
[INFO] [stderr] 1339 | |                 );
[INFO] [stderr]      | |__________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1375:17
[INFO] [stderr]      |
[INFO] [stderr] 1375 | /                 self.aws_v4_request(
[INFO] [stderr] 1376 | |                     "DELETE",
[INFO] [stderr] 1377 | |                     virtural_host,
[INFO] [stderr] 1378 | |                     &uri,
[INFO] [stderr] ...    |
[INFO] [stderr] 1381 | |                     Vec::new(),
[INFO] [stderr] 1382 | |                 );
[INFO] [stderr]      | |__________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1385:17
[INFO] [stderr]      |
[INFO] [stderr] 1385 | /                 self.aws_v2_request(
[INFO] [stderr] 1386 | |                     "DELETE",
[INFO] [stderr] 1387 | |                     &format!("/{}{}", &caps["bucket"], &caps["object"]),
[INFO] [stderr] 1388 | |                     &query_string,
[INFO] [stderr] 1389 | |                     &Vec::new(),
[INFO] [stderr] 1390 | |                     &Vec::new(),
[INFO] [stderr] 1391 | |                 );
[INFO] [stderr]      | |__________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 18s
[INFO] running `"docker" "inspect" "eeb0aa675a994b910cabcb363fa8fc6bfb294e7ca0ea087600585c43386ed5b9"`
[INFO] running `"docker" "rm" "-f" "eeb0aa675a994b910cabcb363fa8fc6bfb294e7ca0ea087600585c43386ed5b9"`
[INFO] [stdout] eeb0aa675a994b910cabcb363fa8fc6bfb294e7ca0ea087600585c43386ed5b9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/s3handler/0.2.3:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 35addf601822f617249ae44b0120c4625a05cb4977bc722e547d429c42dbed7c
[INFO] running `"docker" "start" "-a" "35addf601822f617249ae44b0120c4625a05cb4977bc722e547d429c42dbed7c"`
[INFO] [stderr]    Compiling s3handler v0.2.3 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `LevelFilter`
[INFO] [stderr]   --> src/lib.rs:14:18
[INFO] [stderr]    |
[INFO] [stderr] 14 | use log::{Level, LevelFilter, Metadata, Record};
[INFO] [stderr]    |                  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]    --> src/aws.rs:101:93
[INFO] [stderr]     |
[INFO] [stderr] 101 |             Some(r) => string_to_signed.push_str(&format!("{}/{}/{}/aws4_request", time_str.slice_unchecked(0,8), r, endpoint_type)),
[INFO] [stderr]     |                                                                                             ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]    --> src/aws.rs:102:97
[INFO] [stderr]     |
[INFO] [stderr] 102 |             None => string_to_signed.push_str(&format!("{}/us-east-1/{}/aws4_request", time_str.slice_unchecked(0,8), endpoint_type))
[INFO] [stderr]     |                                                                                                 ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `content` is never read
[INFO] [stderr]    --> src/lib.rs:810:13
[INFO] [stderr]     |
[INFO] [stderr] 810 |             content = vec![83, 51, 82, 83, 32, 116, 101, 115, 116, 10]; // S3RS test/n
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:621:21
[INFO] [stderr]     |
[INFO] [stderr] 621 |                 let mut uri: String;
[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: variable does not need to be mutable
[INFO] [stderr]     --> src/lib.rs:1399:13
[INFO] [stderr]      |
[INFO] [stderr] 1399 |         let mut uri = format!("/admin/bucket");
[INFO] [stderr]      |             ----^^^
[INFO] [stderr]      |             |
[INFO] [stderr]      |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `MY_LOGGER`
[INFO] [stderr]   --> src/lib.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | static MY_LOGGER: MyLogger = MyLogger;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MyLogger`
[INFO] [stderr]   --> src/lib.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct MyLogger;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:959:33
[INFO] [stderr]     |
[INFO] [stderr] 959 | /                                 self.aws_v4_request(
[INFO] [stderr] 960 | |                                     "POST",
[INFO] [stderr] 961 | |                                     None,
[INFO] [stderr] 962 | |                                     &uri,
[INFO] [stderr] ...   |
[INFO] [stderr] 965 | |                                     content.into_bytes(),
[INFO] [stderr] 966 | |                                 );
[INFO] [stderr]     | |__________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:969:33
[INFO] [stderr]     |
[INFO] [stderr] 969 | /                                 self.aws_v2_request(
[INFO] [stderr] 970 | |                                     "POST",
[INFO] [stderr] 971 | |                                     &uri,
[INFO] [stderr] 972 | |                                     &vec![("uploadId", upload_id.as_str())],
[INFO] [stderr] 973 | |                                     &Vec::new(),
[INFO] [stderr] 974 | |                                     &content.into_bytes(),
[INFO] [stderr] 975 | |                                 );
[INFO] [stderr]     | |__________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:991:25
[INFO] [stderr]     |
[INFO] [stderr] 991 |                         self.aws_v4_request("PUT", None, &uri, &Vec::new(), &Vec::new(), content);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:994:25
[INFO] [stderr]     |
[INFO] [stderr] 994 |                         self.aws_v2_request("PUT", &uri, &Vec::new(), &Vec::new(), &content);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1163:9
[INFO] [stderr]      |
[INFO] [stderr] 1163 | /         match self.auth_type {
[INFO] [stderr] 1164 | |             AuthType::AWS4 => self.aws_v4_request(
[INFO] [stderr] 1165 | |                 "DELETE",
[INFO] [stderr] 1166 | |                 virtural_host,
[INFO] [stderr] ...    |
[INFO] [stderr] 1178 | |             ),
[INFO] [stderr] 1179 | |         };
[INFO] [stderr]      | |__________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1194:17
[INFO] [stderr]      |
[INFO] [stderr] 1194 |                 self.aws_v4_request("PUT", None, &uri, &Vec::new(), &Vec::new(), Vec::new());
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1197:17
[INFO] [stderr]      |
[INFO] [stderr] 1197 |                 self.aws_v2_request("PUT", &uri, &Vec::new(), &Vec::new(), &Vec::new());
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1211:17
[INFO] [stderr]      |
[INFO] [stderr] 1211 |                 self.aws_v4_request("DELETE", None, &uri, &Vec::new(), &Vec::new(), Vec::new());
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1214:17
[INFO] [stderr]      |
[INFO] [stderr] 1214 |                 self.aws_v2_request("DELETE", &uri, &Vec::new(), &Vec::new(), &Vec::new());
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1323:17
[INFO] [stderr]      |
[INFO] [stderr] 1323 | /                 self.aws_v4_request(
[INFO] [stderr] 1324 | |                     "PUT",
[INFO] [stderr] 1325 | |                     virtural_host,
[INFO] [stderr] 1326 | |                     &uri,
[INFO] [stderr] ...    |
[INFO] [stderr] 1329 | |                     content.into_bytes(),
[INFO] [stderr] 1330 | |                 );
[INFO] [stderr]      | |__________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1333:17
[INFO] [stderr]      |
[INFO] [stderr] 1333 | /                 self.aws_v2_request(
[INFO] [stderr] 1334 | |                     "PUT",
[INFO] [stderr] 1335 | |                     &format!("/{}{}", &caps["bucket"], &caps["object"]),
[INFO] [stderr] 1336 | |                     &query_string,
[INFO] [stderr] 1337 | |                     &Vec::new(),
[INFO] [stderr] 1338 | |                     &content.into_bytes(),
[INFO] [stderr] 1339 | |                 );
[INFO] [stderr]      | |__________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1375:17
[INFO] [stderr]      |
[INFO] [stderr] 1375 | /                 self.aws_v4_request(
[INFO] [stderr] 1376 | |                     "DELETE",
[INFO] [stderr] 1377 | |                     virtural_host,
[INFO] [stderr] 1378 | |                     &uri,
[INFO] [stderr] ...    |
[INFO] [stderr] 1381 | |                     Vec::new(),
[INFO] [stderr] 1382 | |                 );
[INFO] [stderr]      | |__________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/lib.rs:1385:17
[INFO] [stderr]      |
[INFO] [stderr] 1385 | /                 self.aws_v2_request(
[INFO] [stderr] 1386 | |                     "DELETE",
[INFO] [stderr] 1387 | |                     &format!("/{}{}", &caps["bucket"], &caps["object"]),
[INFO] [stderr] 1388 | |                     &query_string,
[INFO] [stderr] 1389 | |                     &Vec::new(),
[INFO] [stderr] 1390 | |                     &Vec::new(),
[INFO] [stderr] 1391 | |                 );
[INFO] [stderr]      | |__________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.02s
[INFO] running `"docker" "inspect" "35addf601822f617249ae44b0120c4625a05cb4977bc722e547d429c42dbed7c"`
[INFO] running `"docker" "rm" "-f" "35addf601822f617249ae44b0120c4625a05cb4977bc722e547d429c42dbed7c"`
[INFO] [stdout] 35addf601822f617249ae44b0120c4625a05cb4977bc722e547d429c42dbed7c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/s3handler/0.2.3:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 1ee7f79b190cd025770968f01a0aefeac1a6e0ecb4b09414faf31281a6122bb4
[INFO] running `"docker" "start" "-a" "1ee7f79b190cd025770968f01a0aefeac1a6e0ecb4b09414faf31281a6122bb4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/s3handler-0fd3114ec6bba624
[INFO] [stderr]    Doc-tests s3handler
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test aws::tests::test_hash_payload ... ok
[INFO] [stdout] test aws::tests::test_aws_v4_sign ... ok
[INFO] [stdout] test aws::tests::test_aws_v4_get_string_to_signed ... ok
[INFO] [stdout] test aws::tests::test_aws_v2_sign ... ok
[INFO] [stdout] test aws::tests::test_aws_v2_get_string_to_signed ... ok
[INFO] [stdout] test aws::tests::test_aws_s3_v2_sign ... ok
[INFO] [stdout] test aws::tests::test_aws_s3_v2_get_string_to_signed ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1ee7f79b190cd025770968f01a0aefeac1a6e0ecb4b09414faf31281a6122bb4"`
[INFO] running `"docker" "rm" "-f" "1ee7f79b190cd025770968f01a0aefeac1a6e0ecb4b09414faf31281a6122bb4"`
[INFO] [stdout] 1ee7f79b190cd025770968f01a0aefeac1a6e0ecb4b09414faf31281a6122bb4