[INFO] fetching crate jump-kun 0.4.15...
[INFO] checking jump-kun-0.4.15 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate jump-kun 0.4.15 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate jump-kun 0.4.15 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jump-kun 0.4.15
[INFO] finished tweaking crates.io crate jump-kun 0.4.15
[INFO] tweaked toml for crates.io crate jump-kun 0.4.15 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate jump-kun 0.4.15 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vte v0.11.1
[INFO] [stderr]   Downloaded iana-time-zone-haiku v0.1.1
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.94
[INFO] [stderr]   Downloaded link-cplusplus v1.0.8
[INFO] [stderr]   Downloaded scratch v1.0.5
[INFO] [stderr]   Downloaded jump-kun-macros v0.1.16
[INFO] [stderr]   Downloaded globset v0.4.10
[INFO] [stderr]   Downloaded beef v0.5.2
[INFO] [stderr]   Downloaded darling_core v0.14.3
[INFO] [stderr]   Downloaded toml_edit v0.20.1
[INFO] [stderr]   Downloaded bstr v1.2.0
[INFO] [stderr]   Downloaded sled v0.34.7
[INFO] [stderr]   Downloaded toml v0.8.1
[INFO] [stderr]   Downloaded cxx v1.0.94
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.94
[INFO] [stderr]   Downloaded cxx-build v1.0.94
[INFO] [stderr]   Downloaded bumpalo v3.12.0
[INFO] [stderr]   Downloaded skim v0.10.4
[INFO] [stderr]   Downloaded crossbeam-queue v0.3.8
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[INFO] [stderr]   Downloaded defer-drop v1.3.0
[INFO] [stderr]   Downloaded darling_macro v0.14.3
[INFO] [stderr]   Downloaded darling v0.14.3
[INFO] [stderr]   Downloaded fuzzy-matcher v0.3.7
[INFO] [stderr]   Downloaded tuikit v0.5.0
[INFO] [stderr]   Downloaded jwalk v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e52612299c6216a7c965ec18cbf526e3132e3727ac83af4b158ce4900182d8b
[INFO] running `Command { std: "docker" "start" "-a" "5e52612299c6216a7c965ec18cbf526e3132e3727ac83af4b158ce4900182d8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e52612299c6216a7c965ec18cbf526e3132e3727ac83af4b158ce4900182d8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e52612299c6216a7c965ec18cbf526e3132e3727ac83af4b158ce4900182d8b", kill_on_drop: false }`
[INFO] [stdout] 5e52612299c6216a7c965ec18cbf526e3132e3727ac83af4b158ce4900182d8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 352d185959edd68e404a82826722d36c4b0d5bea085e7190883117ef65e3267b
[INFO] running `Command { std: "docker" "start" "-a" "352d185959edd68e404a82826722d36c4b0d5bea085e7190883117ef65e3267b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking aho-corasick v1.1.1
[INFO] [stderr]    Compiling hashbrown v0.14.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]    Compiling indexmap v2.0.2
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking os_str_bytes v6.5.1
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling option-ext v0.2.0
[INFO] [stderr]     Checking termcolor v1.3.0
[INFO] [stderr]    Compiling winnow v0.5.15
[INFO] [stderr]     Checking clap_lex v0.2.4
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[INFO] [stderr]     Checking time v0.1.45
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[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking chrono v0.4.26
[INFO] [stderr]    Compiling dirs-sys v0.4.1
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking bstr v1.2.0
[INFO] [stderr]     Checking deranged v0.3.8
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking byteorder v1.4.3
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[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]     Checking nix v0.25.1
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[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling dirs v5.0.1
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking fuzzy-matcher v0.3.7
[INFO] [stderr]     Checking defer-drop v1.3.0
[INFO] [stderr]     Checking beef v0.5.2
[INFO] [stderr]    Compiling darling_core v0.14.3
[INFO] [stderr]     Checking shlex v1.1.0
[INFO] [stderr]     Checking sled v0.34.7
[INFO] [stderr]     Checking ignore v0.4.20
[INFO] [stderr]     Checking jwalk v0.8.1
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]    Compiling darling_macro v0.14.3
[INFO] [stderr]    Compiling darling v0.14.3
[INFO] [stderr]    Compiling derive_builder_core v0.11.2
[INFO] [stderr]    Compiling derive_builder_macro v0.11.2
[INFO] [stderr]     Checking derive_builder v0.11.2
[INFO] [stderr]     Checking skim v0.10.4
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling serde_spanned v0.6.3
[INFO] [stderr]    Compiling toml_datetime v0.6.3
[INFO] [stderr]    Compiling toml_edit v0.20.1
[INFO] [stderr]    Compiling toml v0.8.1
[INFO] [stderr]    Compiling jump-kun-macros v0.1.16
[INFO] [stderr]     Checking jump-kun v0.4.15 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]  --> src/history.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Skim` is imported redundantly
[INFO] [stdout]  --> src/select_item.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use skim::{Skim, SkimOptions};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 | use skim::prelude::*;
[INFO] [stdout]   |     ---------------- the item `Skim` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SkimOptions` is imported redundantly
[INFO] [stdout]  --> src/select_item.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use skim::{Skim, SkimOptions};
[INFO] [stdout]   |                  ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 | use skim::prelude::*;
[INFO] [stdout]   |     ---------------- the item `SkimOptions` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IntoIterator` is imported redundantly
[INFO] [stdout]  --> src/structs.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::iter::IntoIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `IntoIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]  --> src/history.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]  --> src/jump_then_add_to_hist.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Skim` is imported redundantly
[INFO] [stdout]  --> src/select_item.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use skim::{Skim, SkimOptions};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 | use skim::prelude::*;
[INFO] [stdout]   |     ---------------- the item `Skim` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SkimOptions` is imported redundantly
[INFO] [stdout]  --> src/select_item.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use skim::{Skim, SkimOptions};
[INFO] [stdout]   |                  ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 4 | use skim::prelude::*;
[INFO] [stdout]   |     ---------------- the item `SkimOptions` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IntoIterator` is imported redundantly
[INFO] [stdout]  --> src/structs.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::iter::IntoIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `IntoIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `home_dir` is imported redundantly
[INFO] [stdout]   --> tests/tests.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use super::*;
[INFO] [stdout]    |         -------- the item `home_dir` is already imported here
[INFO] [stdout] 12 |     use dirs::home_dir;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> tests/tests.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     use serde_json;
[INFO] [stdout]    |         ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "352d185959edd68e404a82826722d36c4b0d5bea085e7190883117ef65e3267b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "352d185959edd68e404a82826722d36c4b0d5bea085e7190883117ef65e3267b", kill_on_drop: false }`
[INFO] [stdout] 352d185959edd68e404a82826722d36c4b0d5bea085e7190883117ef65e3267b