[INFO] fetching crate ferro 0.6.0...
[INFO] checking ferro-0.6.0 against 1.95.0 for pr-155915
[INFO] extracting crate ferro 0.6.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate ferro 0.6.0
[INFO] finished tweaking crates.io crate ferro 0.6.0
[INFO] tweaked toml for crates.io crate ferro 0.6.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ferro 0.6.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ferro 0.6.0 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossterm_winapi v0.7.0
[INFO] [stderr]   Downloaded termbg v0.4.3
[INFO] [stderr]   Downloaded redox_termios v0.1.2
[INFO] [stderr]   Downloaded shunting v0.1.2
[INFO] [stderr]   Downloaded value-bag v1.0.0-alpha.9
[INFO] [stderr]   Downloaded termion v2.0.1
[INFO] [stderr]   Downloaded lexers v0.1.4
[INFO] [stderr]   Downloaded async-io v1.12.0
[INFO] [stderr]   Downloaded async-executor v1.5.0
[INFO] [stderr]   Downloaded polling v2.5.2
[INFO] [stderr]   Downloaded bounded-vec-deque v0.1.1
[INFO] [stderr]   Downloaded wepoll-ffi v0.1.2
[INFO] [stderr]   Downloaded signal-hook v0.3.15
[INFO] [stderr]   Downloaded crossterm v0.19.0
[INFO] [stderr]   Downloaded async-std v1.12.0
[INFO] [stderr]   Downloaded serde_json v1.0.93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8dcc95864a075f1358c192555ef78abc7e338784fee82bced649eb95c249a8cd
[INFO] running `Command { std: "docker" "start" "-a" "8dcc95864a075f1358c192555ef78abc7e338784fee82bced649eb95c249a8cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dcc95864a075f1358c192555ef78abc7e338784fee82bced649eb95c249a8cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dcc95864a075f1358c192555ef78abc7e338784fee82bced649eb95c249a8cd", kill_on_drop: false }`
[INFO] [stdout] 8dcc95864a075f1358c192555ef78abc7e338784fee82bced649eb95c249a8cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc07f4691c518cd9276693479d0d7b89d20603e00e20091e0b0161f267eab123
[INFO] running `Command { std: "docker" "start" "-a" "bc07f4691c518cd9276693479d0d7b89d20603e00e20091e0b0161f267eab123", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking futures-io v0.3.26
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.9
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling polling v2.5.2
[INFO] [stderr]     Checking async-lock v2.7.0
[INFO] [stderr]    Compiling async-io v1.12.0
[INFO] [stderr]     Checking concurrent-queue v2.1.0
[INFO] [stderr]     Checking async-task v4.3.0
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking atomic-waker v1.1.0
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling serde_json v1.0.93
[INFO] [stderr]    Compiling signal-hook v0.3.15
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking lexers v0.1.4
[INFO] [stderr]     Checking bounded-vec-deque v0.1.1
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking async-channel v1.8.0
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking termion v2.0.1
[INFO] [stderr]     Checking blocking v1.3.0
[INFO] [stderr]     Checking async-executor v1.5.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking shunting v0.1.2
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]    Compiling thiserror-impl v1.0.38
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]     Checking thiserror v1.0.38
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking crossterm v0.19.0
[INFO] [stderr]     Checking async-global-executor v2.3.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking termbg v0.4.3
[INFO] [stderr]     Checking ferro v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/editor.rs:775:13
[INFO] [stdout]     |
[INFO] [stdout] 775 |         let mut offset = &mut self.offset;
[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] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/row.rs:834:25
[INFO] [stdout]     |
[INFO] [stdout] 834 |     pub fn to_graphemes(&self) -> Graphemes {
[INFO] [stdout]     |                         ^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided 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] 834 |     pub fn to_graphemes(&self) -> Graphemes<'_> {
[INFO] [stdout]     |                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/editor.rs:775:13
[INFO] [stdout]     |
[INFO] [stdout] 775 |         let mut offset = &mut self.offset;
[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] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/row.rs:834:25
[INFO] [stdout]     |
[INFO] [stdout] 834 |     pub fn to_graphemes(&self) -> Graphemes {
[INFO] [stdout]     |                         ^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided 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] 834 |     pub fn to_graphemes(&self) -> Graphemes<'_> {
[INFO] [stdout]     |                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.99s
[INFO] running `Command { std: "docker" "inspect" "bc07f4691c518cd9276693479d0d7b89d20603e00e20091e0b0161f267eab123", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc07f4691c518cd9276693479d0d7b89d20603e00e20091e0b0161f267eab123", kill_on_drop: false }`
[INFO] [stdout] bc07f4691c518cd9276693479d0d7b89d20603e00e20091e0b0161f267eab123
