[INFO] fetching crate melib 0.6.2...
[INFO] checking melib-0.6.2 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate melib 0.6.2 into /workspace/builds/worker-111/source
[INFO] validating manifest of crates.io crate melib 0.6.2 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate melib 0.6.2
[INFO] finished tweaking crates.io crate melib 0.6.2
[INFO] tweaked toml for crates.io crate melib 0.6.2 written to /workspace/builds/worker-111/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a818a428aee4a4b25a6dd5a14cd17828a187eba218674b2d5efca05909d9f883
[INFO] running `Command { std: "docker" "start" "-a" "a818a428aee4a4b25a6dd5a14cd17828a187eba218674b2d5efca05909d9f883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a818a428aee4a4b25a6dd5a14cd17828a187eba218674b2d5efca05909d9f883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a818a428aee4a4b25a6dd5a14cd17828a187eba218674b2d5efca05909d9f883", kill_on_drop: false }`
[INFO] [stdout] a818a428aee4a4b25a6dd5a14cd17828a187eba218674b2d5efca05909d9f883
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 158af85ce4640b04f69fb3dfa09d6df12f74940f7f2d622f21355f27b16411fe
[INFO] running `Command { std: "docker" "start" "-a" "158af85ce4640b04f69fb3dfa09d6df12f74940f7f2d622f21355f27b16411fe", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] note: Switching to Edition 2021 will enable the use of the version 2 feature resolver in Cargo.
[INFO] [stderr] This may cause some dependencies to be built with fewer features enabled than previously.
[INFO] [stderr] More information about the resolver changes may be found at https://doc.rust-lang.org/nightly/edition-guide/rust-2021/default-cargo-resolver.html
[INFO] [stderr] When building the following dependencies, the given features will no longer be used:
[INFO] [stderr] 
[INFO] [stderr]   getrandom v0.2.3: std
[INFO] [stderr] 
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking cfg-if v0.1.10
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[INFO] [stderr]    Compiling pkg-config v0.3.19
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[INFO] [stderr]    Compiling unicode-xid v0.2.2
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[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
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[INFO] [stderr]    Compiling ryu v1.0.5
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[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling version_check v0.9.3
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[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling openssl v0.10.36
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[INFO] [stderr]     Checking lazycell v1.3.0
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[INFO] [stderr]    Compiling serde_derive v1.0.128
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[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking adler v1.0.2
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[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]    Compiling melib v0.6.2 (/tmp/fixit)
[INFO] [stderr]     Checking xdg-utils v0.3.2
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking data-encoding v2.3.2
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[INFO] [stderr]    Migrating build.rs from 2018 edition to 2021
[INFO] [stderr]     Checking foreign-types v0.3.2
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[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]     Checking hashbrown v0.9.1
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[INFO] [stderr]    Compiling memoffset v0.5.6
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[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling libsqlite3-sys v0.20.1
[INFO] [stderr]     Checking encoding v0.2.33
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[INFO] [stderr]     Checking hashlink v0.6.0
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling openssl-sys v0.9.66
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
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[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking inotify-sys v0.1.5
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[INFO] [stderr]     Checking inotify v0.7.1
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[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking smol v1.2.5
[INFO] [stderr]     Checking notify v4.0.17
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking rusqlite v0.24.2
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]     Checking async-stream v0.2.1
[INFO] [stderr]     Checking futures-executor v0.3.16
[INFO] [stderr]     Checking futures v0.3.16
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/conf.rs:77:3
[INFO] [stdout]    |
[INFO] [stdout] 77 | #[serde(default)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 78 | #[derive(Debug, Clone, Serialize, Deserialize)]
[INFO] [stdout]    |                        --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/text_processing/line_break.rs:160:14
[INFO] [stdout]     |
[INFO] [stdout] 160 |             };
[INFO] [stdout]     |              ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/backends/maildir/backend.rs:1134:10
[INFO] [stdout]      |
[INFO] [stdout] 1134 |         };
[INFO] [stdout]      |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed src/backends/imap/protocol_parser.rs (2 fixes)
[INFO] [stderr]        Fixed src/email/parser.rs (3 fixes)
[INFO] [stderr]        Fixed src/email/compose/mime.rs (1 fix)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/conf.rs:77:3
[INFO] [stdout]    |
[INFO] [stdout] 77 | #[serde(default)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 78 | #[derive(Debug, Clone, Serialize, Deserialize)]
[INFO] [stdout]    |                        --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/text_processing/line_break.rs:160:14
[INFO] [stdout]     |
[INFO] [stdout] 160 |             };
[INFO] [stdout]     |              ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/backends/maildir/backend.rs:1134:10
[INFO] [stdout]      |
[INFO] [stdout] 1134 |         };
[INFO] [stdout]      |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 31s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling melib v0.6.2 (/tmp/fixit)
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/conf.rs:77:3
[INFO] [stdout]    |
[INFO] [stdout] 77 | #[serde(default)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 78 | #[derive(Debug, Clone, Serialize, Deserialize)]
[INFO] [stdout]    |                        --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/text_processing/line_break.rs:160:14
[INFO] [stdout]     |
[INFO] [stdout] 160 |             };
[INFO] [stdout]     |              ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]     --> src/backends/imap.rs:1173:25
[INFO] [stdout]      |
[INFO] [stdout] 1173 |                     use std::iter::FromIterator;
[INFO] [stdout]      |                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/conf.rs:77:3
[INFO] [stdout]    |
[INFO] [stdout] 77 | #[serde(default)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 78 | #[derive(Debug, Clone, Serialize, Deserialize)]
[INFO] [stdout]    |                        --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/text_processing/line_break.rs:160:14
[INFO] [stdout]     |
[INFO] [stdout] 160 |             };
[INFO] [stdout]     |              ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/backends/maildir/backend.rs:1134:10
[INFO] [stdout]      |
[INFO] [stdout] 1134 |         };
[INFO] [stdout]      |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]     --> src/backends/imap.rs:1173:25
[INFO] [stdout]      |
[INFO] [stdout] 1173 |                     use std::iter::FromIterator;
[INFO] [stdout]      |                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/backends/maildir/backend.rs:1134:10
[INFO] [stdout]      |
[INFO] [stdout] 1134 |         };
[INFO] [stdout]      |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.13s
[INFO] running `Command { std: "docker" "inspect" "158af85ce4640b04f69fb3dfa09d6df12f74940f7f2d622f21355f27b16411fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "158af85ce4640b04f69fb3dfa09d6df12f74940f7f2d622f21355f27b16411fe", kill_on_drop: false }`
[INFO] [stdout] 158af85ce4640b04f69fb3dfa09d6df12f74940f7f2d622f21355f27b16411fe