[INFO] crate mhash 0.3.0 is already in cache
[INFO] extracting crate mhash 0.3.0 into work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/reg/mhash/0.3.0
[INFO] extracting crate mhash 0.3.0 into work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/mhash/0.3.0
[INFO] validating manifest of mhash-0.3.0 on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mhash-0.3.0 on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mhash-0.3.0
[INFO] finished frobbing mhash-0.3.0
[INFO] frobbed toml for mhash-0.3.0 written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/reg/mhash/0.3.0/Cargo.toml
[INFO] started frobbing mhash-0.3.0
[INFO] finished frobbing mhash-0.3.0
[INFO] frobbed toml for mhash-0.3.0 written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/mhash/0.3.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mhash-0.3.0 against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-5/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/mhash/0.3.0:/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a2c340a8444b0f13e4d278212b3e8e5cea07c1146d096d0317ae96a8fd666d2e
[INFO] running `"docker" "start" "-a" "a2c340a8444b0f13e4d278212b3e8e5cea07c1146d096d0317ae96a8fd666d2e"`
[INFO] [stderr]     Checking varmint v0.1.3
[INFO] [stderr]     Checking mhash v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: lint `fat_ptr_transmutes` has been removed: `was accidentally removed back in 2014`
[INFO] [stderr]  --> src/lib.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![warn(fat_ptr_transmutes)]
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: lint `fat_ptr_transmutes` has been removed: `was accidentally removed back in 2014`
[INFO] [stderr]  --> src/lib.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![warn(fat_ptr_transmutes)]
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(renamed_and_removed_lints)] 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:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 | /     error_chain! {
[INFO] [stderr] 30 | |         links {
[INFO] [stderr] 31 | |             creation::Error, creation::ErrorKind, Creation;
[INFO] [stderr] 32 | |         }
[INFO] [stderr] ...  |
[INFO] [stderr] 45 | |         }
[INFO] [stderr] 46 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[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] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 | /     error_chain! {
[INFO] [stderr] 55 | |         links {
[INFO] [stderr] 56 | |             from_bytes::Error, from_bytes::ErrorKind, FromBytes;
[INFO] [stderr] 57 | |         }
[INFO] [stderr] ...  |
[INFO] [stderr] 61 | |         }
[INFO] [stderr] 62 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/multihash_vec.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |             let mut writer = &mut bytes;
[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: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 | /     error_chain! {
[INFO] [stderr] 30 | |         links {
[INFO] [stderr] 31 | |             creation::Error, creation::ErrorKind, Creation;
[INFO] [stderr] 32 | |         }
[INFO] [stderr] ...  |
[INFO] [stderr] 45 | |         }
[INFO] [stderr] 46 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[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] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 | /     error_chain! {
[INFO] [stderr] 55 | |         links {
[INFO] [stderr] 56 | |             from_bytes::Error, from_bytes::ErrorKind, FromBytes;
[INFO] [stderr] 57 | |         }
[INFO] [stderr] ...  |
[INFO] [stderr] 61 | |         }
[INFO] [stderr] 62 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/multihash_vec.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |             let mut writer = &mut bytes;
[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: unused result
[INFO] [stderr]   --> src/read.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |         buffer.read_multihash().is_err();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/lib.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 | #![warn(unused_results)]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused result
[INFO] [stderr]   --> src/read.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |         buffer.read_multihash().is_err();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused result
[INFO] [stderr]   --> src/read.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         buffer.read_multihash().is_err();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused result
[INFO] [stderr]    --> src/read.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         buffer.read_multihash().is_err();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused result
[INFO] [stderr]    --> src/read.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 |         buffer.read_multihash().is_err();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.65s
[INFO] running `"docker" "inspect" "a2c340a8444b0f13e4d278212b3e8e5cea07c1146d096d0317ae96a8fd666d2e"`
[INFO] running `"docker" "rm" "-f" "a2c340a8444b0f13e4d278212b3e8e5cea07c1146d096d0317ae96a8fd666d2e"`
[INFO] [stdout] a2c340a8444b0f13e4d278212b3e8e5cea07c1146d096d0317ae96a8fd666d2e