[INFO] fetching crate melib 0.6.2...
[INFO] checking melib-0.6.2 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate melib 0.6.2 into /workspace/builds/worker-62/source
[INFO] validating manifest of crates.io crate melib 0.6.2 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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-62/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flume v0.9.2
[INFO] [stderr]   Downloaded hashlink v0.6.0
[INFO] [stderr]   Downloaded rusqlite v0.24.2
[INFO] [stderr]   Downloaded spinning_top v0.2.4
[INFO] [stderr]   Downloaded isahc v0.9.14
[INFO] [stderr]   Downloaded libsqlite3-sys v0.20.1
[INFO] [stderr]   Downloaded xdg-utils v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28fd783f9dd8096fa875179f90cbcf41b7edb4d9c172a3530ab304e6375238cc
[INFO] running `Command { std: "docker" "start" "-a" "28fd783f9dd8096fa875179f90cbcf41b7edb4d9c172a3530ab304e6375238cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28fd783f9dd8096fa875179f90cbcf41b7edb4d9c172a3530ab304e6375238cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28fd783f9dd8096fa875179f90cbcf41b7edb4d9c172a3530ab304e6375238cc", kill_on_drop: false }`
[INFO] [stdout] 28fd783f9dd8096fa875179f90cbcf41b7edb4d9c172a3530ab304e6375238cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34f332086027e2174167895ecea8af6a5a154d51ac3da5feb4d81224f5ea8d24
[INFO] running `Command { std: "docker" "start" "-a" "34f332086027e2174167895ecea8af6a5a154d51ac3da5feb4d81224f5ea8d24", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking futures-io v0.3.16
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking bitflags v1.3.1
[INFO] [stderr]     Checking fastrand v1.5.0
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking futures-sink v0.3.16
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking ahash v0.4.7
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.35
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.9
[INFO] [stderr]    Compiling melib v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking xdg-utils v0.3.2
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling libsqlite3-sys v0.20.1
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking hashlink v0.6.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking socket2 v0.4.1
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking filetime v0.2.15
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking memmap v0.5.2
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking async-fs v1.5.0
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking async-process v1.2.0
[INFO] [stderr]     Checking async-net v1.6.1
[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] [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: unused import: `std::convert::TryInto`
[INFO] [stdout]    --> src/backends/imap/protocol_parser.rs:863:9
[INFO] [stdout]     |
[INFO] [stdout] 863 |     use std::convert::TryInto;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]     --> src/backends/imap/protocol_parser.rs:1055:9
[INFO] [stdout]      |
[INFO] [stdout] 1055 |     use std::convert::TryInto;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^
[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: unused import: `generic::*`
[INFO] [stdout]     --> src/email/parser.rs:2474:43
[INFO] [stdout]      |
[INFO] [stdout] 2474 |     use super::{address::*, encodings::*, generic::*, *};
[INFO] [stdout]      |                                           ^^^^^^^^^^
[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: unused variable: `words`
[INFO] [stdout]    --> src/email/compose/mime.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 182 |     let words = "[Advcomparch] =?utf-8?b?zqPPhc68z4DOtc+BzrnPhs6/z4HOrCDPg861IGZs?=\n\t=?utf-8?b?dXNoIM67z4zOs8+JIG1pc3ByZWRpY3Rpb24gzrrO...
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_words`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]     --> src/email/parser.rs:1203:14
[INFO] [stdout]      |
[INFO] [stdout] 1203 |         for (h, v) in headers {
[INFO] [stdout]      |              ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `action_list`
[INFO] [stdout]     --> src/email/parser.rs:1204:24
[INFO] [stdout]      |
[INFO] [stdout] 1204 |             let (rest, action_list) = rfc_2369_list_headers_action_list(v).unwrap();
[INFO] [stdout]      |                        ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_action_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.85s
[INFO] running `Command { std: "docker" "inspect" "34f332086027e2174167895ecea8af6a5a154d51ac3da5feb4d81224f5ea8d24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34f332086027e2174167895ecea8af6a5a154d51ac3da5feb4d81224f5ea8d24", kill_on_drop: false }`
[INFO] [stdout] 34f332086027e2174167895ecea8af6a5a154d51ac3da5feb4d81224f5ea8d24