[INFO] cloning repository https://github.com/Soya-Onishi/ion
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Soya-Onishi/ion" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSoya-Onishi%2Fion", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSoya-Onishi%2Fion'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d7ea3a13f0c3bd80a7206548163aa6a72c47ac5
[INFO] checking Soya-Onishi/ion against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSoya-Onishi%2Fion" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Soya-Onishi/ion
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/Soya-Onishi/ion
[INFO] tweaked toml for git repo https://github.com/Soya-Onishi/ion written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Soya-Onishi/ion on toolchain 52995a223f2919dd3e2e427231db90a257350ded
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Soya-Onishi/ion 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" "+52995a223f2919dd3e2e427231db90a257350ded" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] ec16dfff1d60eaeaa4a9b4ec7d25e4465f4d6db45e1015236c6b68ed0c4884b6
[INFO] running `Command { std: "docker" "start" "ec16dfff1d60eaeaa4a9b4ec7d25e4465f4d6db45e1015236c6b68ed0c4884b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec16dfff1d60eaeaa4a9b4ec7d25e4465f4d6db45e1015236c6b68ed0c4884b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ec16dfff1d60eaeaa4a9b4ec7d25e4465f4d6db45e1015236c6b68ed0c4884b6" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec16dfff1d60eaeaa4a9b4ec7d25e4465f4d6db45e1015236c6b68ed0c4884b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "ec16dfff1d60eaeaa4a9b4ec7d25e4465f4d6db45e1015236c6b68ed0c4884b6" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.42
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling syn v1.0.98
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[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]     Checking either v1.7.0
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[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling num-integer v0.1.45
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[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]    Compiling num-bigint v0.3.3
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[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.3.2
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
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[INFO] [stderr]    Compiling futures-core v0.3.21
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[INFO] [stderr]     Checking bytecount v0.6.3
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]    Compiling futures-task v0.3.21
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[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling ion-shell v1.0.0-alpha (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking permutate v0.3.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]    Compiling rustversion v1.0.8
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking scopes v0.1.0 (/opt/rustwide/workdir/members/scopes-rs)
[INFO] [stderr]     Checking ion-ranges v0.1.0 (/opt/rustwide/workdir/members/ranges)
[INFO] [stdout] warning: use of deprecated module `std::u8`: all constants in this module replaced by associated constants on the type
[INFO] [stdout]  --> members/ranges/src/parse.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{cmp::Ordering, u8};
[INFO] [stdout]   |                          ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `flags` is never read
[INFO] [stdout]   --> members/scopes-rs/src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Scopes<K: Hash + Eq, V> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 17 |     flags:   u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Scopes` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking vte v0.10.1
[INFO] [stderr]     Checking lexical v5.2.2
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking termion v1.5.6 (https://gitlab.redox-os.org/redox-os/termion#8054e082)
[INFO] [stderr]     Checking users v0.10.0
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[INFO] [stderr]     Checking nix v0.23.1 (https://github.com/nix-rust/nix.git?rev=ff6f8b8a#ff6f8b8a)
[INFO] [stderr]    Compiling decimal v2.1.0 (https://github.com/alkis/decimal.git#83cfb19d)
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking xdg v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.140
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking mktemp v0.4.1
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking strip-ansi-escapes v0.1.1
[INFO] [stderr]     Checking object-pool v0.5.3 (https://github.com/CJP10/object-pool.git?rev=b7461b6ad6dcc93e69c3eee378895ea8593d880e#b7461b6a)
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking redox_liner v0.5.1 (https://gitlab.redox-os.org/redox-os/liner#616e6165)
[INFO] [stderr]     Checking plotters-svg v0.3.2
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking plotters v0.3.2
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stdout] warning: field `flags` is never read
[INFO] [stdout]   --> members/scopes-rs/src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Scopes<K: Hash + Eq, V> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 17 |     flags:   u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Scopes` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated module `std::u8`: all constants in this module replaced by associated constants on the type
[INFO] [stdout]  --> members/ranges/src/parse.rs:2:26
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{cmp::Ordering, u8};
[INFO] [stdout]   |                          ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking calculate v0.7.0 (https://gitlab.redox-os.org/redox-os/calc#9f975c50)
[INFO] [stderr]     Checking small v0.1.0 (https://gitlab.redox-os.org/redox-os/small#4374ae30)
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking types-rs v0.1.0 (/opt/rustwide/workdir/members/types-rs)
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling derive_utils v0.11.2
[INFO] [stderr]    Compiling auto_enums_core v0.7.12
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling serial_test_derive v0.8.0
[INFO] [stderr]     Checking serial_test v0.8.0
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking auto_enums v0.7.12
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling builtins-proc v0.1.0 (/opt/rustwide/workdir/members/builtins-proc)
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stdout] warning: unexpected `cfg` condition name: `fuzzing`
[INFO] [stdout]   --> src/lib/parser/mod.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[cfg(fuzzing)]
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 34 more
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `job_control::BackgroundEvent`
[INFO] [stdout]   --> src/lib/shell/pipe_exec/mod.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub use self::{job_control::BackgroundEvent, pipes::create_pipe};
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `convert::TryFrom`
[INFO] [stdout]  --> src/lib/shell/variables.rs:9:35
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::{env, ffi::CStr, rc::Rc, convert::TryFrom};
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `must_use` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/lib/shell/pipe_exec/mod.rs:122:7
[INFO] [stdout]     |
[INFO] [stdout] 122 |     #[must_use]
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: the `must_use` attribute can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[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: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `must_use` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/lib/shell/variables.rs:256:7
[INFO] [stdout]     |
[INFO] [stdout] 256 |     #[must_use]
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: the `must_use` attribute can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `must_use` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/lib/shell/mod.rs:83:7
[INFO] [stdout]    |
[INFO] [stdout] 83 |     #[must_use]
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the `must_use` attribute can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `must_use` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/lib/shell/mod.rs:88:7
[INFO] [stdout]    |
[INFO] [stdout] 88 |     #[must_use]
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the `must_use` attribute can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `must_use` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/lib/shell/mod.rs:93:7
[INFO] [stdout]    |
[INFO] [stdout] 93 |     #[must_use]
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the `must_use` attribute can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `must_use` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/lib/shell/mod.rs:98:7
[INFO] [stdout]    |
[INFO] [stdout] 98 |     #[must_use]
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the `must_use` attribute can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `must_use` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/lib/shell/mod.rs:103:7
[INFO] [stdout]     |
[INFO] [stdout] 103 |     #[must_use]
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: the `must_use` attribute can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `must_use` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/lib/shell/mod.rs:168:7
[INFO] [stdout]     |
[INFO] [stdout] 168 |     #[must_use]
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: the `must_use` attribute can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib/shell/flow.rs:617:33
[INFO] [stdout]     |
[INFO] [stdout] 617 |                     if let Some(mut last) = pline.items.last_mut() {
[INFO] [stdout]     |                                 ----^^^^
[INFO] [stdout]     |                                 |
[INFO] [stdout]     |                                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stdout] error: useless conversion to the same type: `expansion::Error<<Self as Expander>::Error>`
[INFO] [stdout]    --> src/lib/expansion/mod.rs:353:17
[INFO] [stdout]     |
[INFO] [stdout] 353 |                 self.array_expand(elements, index).map_err(Into::into)
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 353 -                 self.array_expand(elements, index).map_err(Into::into)
[INFO] [stdout] 353 +                 self.array_expand(elements, index)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `expansion::Error<IonError>`
[INFO] [stdout]   --> src/lib/shell/shell_expand.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |             self.variables().get_str(name).map_err(Into::into)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 62 -             self.variables().get_str(name).map_err(Into::into)
[INFO] [stdout] 62 +             self.variables().get_str(name)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `IonError`
[INFO] [stdout]    --> src/lib/shell/mod.rs:334:13
[INFO] [stdout]     |
[INFO] [stdout] 334 |             self.execute_pipeline(pipeline).map_err(Into::into)
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 334 -             self.execute_pipeline(pipeline).map_err(Into::into)
[INFO] [stdout] 334 +             self.execute_pipeline(pipeline)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `IonError`
[INFO] [stdout]    --> src/lib/shell/mod.rs:342:13
[INFO] [stdout]     |
[INFO] [stdout] 342 |             self.execute_pipeline(pipeline).map_err(Into::into)
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 342 -             self.execute_pipeline(pipeline).map_err(Into::into)
[INFO] [stdout] 342 +             self.execute_pipeline(pipeline)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib/expansion/pipelines.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |         &self,
[INFO] [stdout]     |         ^^^^^ the lifetime is elided here
[INFO] [stdout] 134 |         shell: &mut Shell<'a>,
[INFO] [stdout] 135 |     ) -> super::Result<PipeItem<RefinedJob<'a>>, <Shell as Expander>::Error> {
[INFO] [stdout]     |                                                   ^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 135 |     ) -> super::Result<PipeItem<RefinedJob<'a>>, <Shell<'_> as Expander>::Error> {
[INFO] [stdout]     |                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib/expansion/pipelines.rs:206:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |         &self,
[INFO] [stdout]     |         ^^^^^ the lifetime is elided here
[INFO] [stdout] 207 |         shell: &mut Shell<'a>,
[INFO] [stdout] 208 |     ) -> super::Result<Pipeline<RefinedJob<'a>>, <Shell as Expander>::Error> {
[INFO] [stdout]     |                                                   ^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 208 |     ) -> super::Result<Pipeline<RefinedJob<'a>>, <Shell<'_> as Expander>::Error> {
[INFO] [stdout]     |                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ion-shell` (lib) due to 4 previous errors; 14 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ec16dfff1d60eaeaa4a9b4ec7d25e4465f4d6db45e1015236c6b68ed0c4884b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec16dfff1d60eaeaa4a9b4ec7d25e4465f4d6db45e1015236c6b68ed0c4884b6", kill_on_drop: false }`
[INFO] [stdout] ec16dfff1d60eaeaa4a9b4ec7d25e4465f4d6db45e1015236c6b68ed0c4884b6
