[INFO] crate btrfs-dedupe 1.0.2 is already in cache
[INFO] checking btrfs-dedupe-1.0.2 against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] extracting crate btrfs-dedupe 1.0.2 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate btrfs-dedupe 1.0.2 on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate btrfs-dedupe 1.0.2
[INFO] finished tweaking crates.io crate btrfs-dedupe 1.0.2
[INFO] tweaked toml for crates.io crate btrfs-dedupe 1.0.2 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] af59e397d74586759496f45af9801badc90c96f100ffd30990ab2354140a0f7b
[INFO] running `"docker" "start" "-a" "af59e397d74586759496f45af9801badc90c96f100ffd30990ab2354140a0f7b"`
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking byte-tools v0.1.3
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking minilzo-sys v0.1.0
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]     Checking generic-array v0.5.1
[INFO] [stderr]     Checking minilzo v0.2.0
[INFO] [stderr]     Checking digest-buffer v0.1.2
[INFO] [stderr]     Checking digest v0.2.1
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking sha2 v0.2.0
[INFO] [stderr]     Checking btrfs v1.2.2
[INFO] [stderr]     Checking btrfs-dedupe v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/examine.rs:17:3
[INFO] [stderr]    |
[INFO] [stderr] 17 |         try! (
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/examine.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 |             try! (
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/scan.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     in try! (
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/scan.rs:41:4
[INFO] [stderr]    |
[INFO] [stderr] 41 |             try! (
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/scan.rs:57:4
[INFO] [stderr]    |
[INFO] [stderr] 57 |             try! (
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/scan.rs:88:4
[INFO] [stderr]    |
[INFO] [stderr] 88 |             try! (
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/scan.rs:175:3
[INFO] [stderr]     |
[INFO] [stderr] 175 |         try! (
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:121:47
[INFO] [stderr]     |
[INFO] [stderr] 121 |     let file_metadata_lists: FileMetadataLists = try! (
[INFO] [stderr]     |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[ macro_use ]
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/misc/stderr.rs:8:38
[INFO] [stderr]    |
[INFO] [stderr] 8  |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/output.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |               stderr! (
[INFO] [stderr]    |  _____________-
[INFO] [stderr] 69 | |                 "\r\x1b[A\x1b[K");
[INFO] [stderr]    | |__________________________________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/misc/stderr.rs:8:38
[INFO] [stderr]    |
[INFO] [stderr] 8  |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/output.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |           stderr! (
[INFO] [stderr]    |  _________-
[INFO] [stderr] 77 | |             "{}\r\n",
[INFO] [stderr] 78 | |             status);
[INFO] [stderr]    | |____________________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/misc/stderr.rs:8:38
[INFO] [stderr]    |
[INFO] [stderr] 8  |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/output.rs:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |               stderr! (
[INFO] [stderr]    |  _____________-
[INFO] [stderr] 90 | |                 "\r\x1b[A\x1b[K");
[INFO] [stderr]    | |__________________________________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/misc/stderr.rs:8:38
[INFO] [stderr]    |
[INFO] [stderr] 8  |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/output.rs:94:9
[INFO] [stderr]    |
[INFO] [stderr] 94 |           stderr! (
[INFO] [stderr]    |  _________-
[INFO] [stderr] 95 | |             "{}\r\n",
[INFO] [stderr] 96 | |             message);
[INFO] [stderr]    | |_____________________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/misc/stderr.rs:8:38
[INFO] [stderr]     |
[INFO] [stderr] 8   |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/output.rs:100:13
[INFO] [stderr]     |
[INFO] [stderr] 100 |               stderr! (
[INFO] [stderr]     |  _____________-
[INFO] [stderr] 101 | |                 "{}\r\n",
[INFO] [stderr] 102 | |                 self.status.as_ref ().unwrap ());
[INFO] [stderr]     | |_________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/misc/stderr.rs:8:38
[INFO] [stderr]     |
[INFO] [stderr] 8   |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/output.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |               stderr! (
[INFO] [stderr]     |  _____________-
[INFO] [stderr] 115 | |                 "\r\x1b[A\x1b[K");
[INFO] [stderr]     | |__________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/misc/stderr.rs:31:38
[INFO] [stderr]     |
[INFO] [stderr] 31  |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/scan.rs:121:13
[INFO] [stderr]     |
[INFO] [stderr] 121 |               stderrln! (
[INFO] [stderr]     |  _____________-
[INFO] [stderr] 122 | |                 "Ignoring unknown filetype: {:?}: {:?}",
[INFO] [stderr] 123 | |                 file_type,
[INFO] [stderr] 124 | |                 entry.path ());
[INFO] [stderr]     | |_______________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/examine.rs:17:3
[INFO] [stderr]    |
[INFO] [stderr] 17 |         try! (
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/examine.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 |             try! (
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/scan.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     in try! (
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/scan.rs:41:4
[INFO] [stderr]    |
[INFO] [stderr] 41 |             try! (
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/scan.rs:57:4
[INFO] [stderr]    |
[INFO] [stderr] 57 |             try! (
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/scan.rs:88:4
[INFO] [stderr]    |
[INFO] [stderr] 88 |             try! (
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/scan.rs:175:3
[INFO] [stderr]     |
[INFO] [stderr] 175 |         try! (
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:121:47
[INFO] [stderr]     |
[INFO] [stderr] 121 |     let file_metadata_lists: FileMetadataLists = try! (
[INFO] [stderr]     |                                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[ macro_use ]
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/misc/stderr.rs:8:38
[INFO] [stderr]    |
[INFO] [stderr] 8  |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/output.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |               stderr! (
[INFO] [stderr]    |  _____________-
[INFO] [stderr] 69 | |                 "\r\x1b[A\x1b[K");
[INFO] [stderr]    | |__________________________________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/misc/stderr.rs:8:38
[INFO] [stderr]    |
[INFO] [stderr] 8  |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/output.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |           stderr! (
[INFO] [stderr]    |  _________-
[INFO] [stderr] 77 | |             "{}\r\n",
[INFO] [stderr] 78 | |             status);
[INFO] [stderr]    | |____________________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/misc/stderr.rs:8:38
[INFO] [stderr]    |
[INFO] [stderr] 8  |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/output.rs:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |               stderr! (
[INFO] [stderr]    |  _____________-
[INFO] [stderr] 90 | |                 "\r\x1b[A\x1b[K");
[INFO] [stderr]    | |__________________________________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/misc/stderr.rs:8:38
[INFO] [stderr]    |
[INFO] [stderr] 8  |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/output.rs:94:9
[INFO] [stderr]    |
[INFO] [stderr] 94 |           stderr! (
[INFO] [stderr]    |  _________-
[INFO] [stderr] 95 | |             "{}\r\n",
[INFO] [stderr] 96 | |             message);
[INFO] [stderr]    | |_____________________- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/misc/stderr.rs:8:38
[INFO] [stderr]     |
[INFO] [stderr] 8   |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/output.rs:100:13
[INFO] [stderr]     |
[INFO] [stderr] 100 |               stderr! (
[INFO] [stderr]     |  _____________-
[INFO] [stderr] 101 | |                 "{}\r\n",
[INFO] [stderr] 102 | |                 self.status.as_ref ().unwrap ());
[INFO] [stderr]     | |_________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/misc/stderr.rs:8:38
[INFO] [stderr]     |
[INFO] [stderr] 8   |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/output.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |               stderr! (
[INFO] [stderr]     |  _____________-
[INFO] [stderr] 115 | |                 "\r\x1b[A\x1b[K");
[INFO] [stderr]     | |__________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/misc/stderr.rs:31:38
[INFO] [stderr]     |
[INFO] [stderr] 31  |               &mut ::std::io::stderr () as &mut ::std::io::Write,
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::io::Write)`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/scan.rs:121:13
[INFO] [stderr]     |
[INFO] [stderr] 121 |               stderrln! (
[INFO] [stderr]     |  _____________-
[INFO] [stderr] 122 | |                 "Ignoring unknown filetype: {:?}: {:?}",
[INFO] [stderr] 123 | |                 file_type,
[INFO] [stderr] 124 | |                 entry.path ());
[INFO] [stderr]     | |_______________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/misc/io.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 |         io_error.description ().to_string ()
[INFO] [stderr]    |                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/misc/io.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 |         io_error.description ().to_string ()
[INFO] [stderr]    |                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/output.rs:20:7
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let mut terminal =
[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: field is never read: `terminal`
[INFO] [stderr]   --> src/output.rs:10:2
[INFO] [stderr]    |
[INFO] [stderr] 10 |     terminal: Option <RawTerminal <Stdout>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/output.rs:20:7
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let mut terminal =
[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: field is never read: `terminal`
[INFO] [stderr]   --> src/output.rs:10:2
[INFO] [stderr]    |
[INFO] [stderr] 10 |     terminal: Option <RawTerminal <Stdout>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.74s
[INFO] running `"docker" "inspect" "af59e397d74586759496f45af9801badc90c96f100ffd30990ab2354140a0f7b"`
[INFO] running `"docker" "rm" "-f" "af59e397d74586759496f45af9801badc90c96f100ffd30990ab2354140a0f7b"`
[INFO] [stdout] af59e397d74586759496f45af9801badc90c96f100ffd30990ab2354140a0f7b
