[INFO] fetching crate snailshell 0.3.1...
[INFO] building snailshell-0.3.1 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate snailshell 0.3.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate snailshell 0.3.1
[INFO] finished tweaking crates.io crate snailshell 0.3.1
[INFO] tweaked toml for crates.io crate snailshell 0.3.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate snailshell 0.3.1 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate snailshell 0.3.1 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee47237ad4b8eaca9705b68d7bd5867d6b39eb030b2523e2fa03620c5971b5eb
[INFO] running `Command { std: "docker" "start" "-a" "ee47237ad4b8eaca9705b68d7bd5867d6b39eb030b2523e2fa03620c5971b5eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee47237ad4b8eaca9705b68d7bd5867d6b39eb030b2523e2fa03620c5971b5eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee47237ad4b8eaca9705b68d7bd5867d6b39eb030b2523e2fa03620c5971b5eb", kill_on_drop: false }`
[INFO] [stdout] ee47237ad4b8eaca9705b68d7bd5867d6b39eb030b2523e2fa03620c5971b5eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ed58373048445f3b2622b1030307a1dde6c762976407f96d2c8cc42fd747a31
[INFO] running `Command { std: "docker" "start" "-a" "5ed58373048445f3b2622b1030307a1dde6c762976407f96d2c8cc42fd747a31", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.42
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling os_str_bytes v6.2.0
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling textwrap v0.15.0
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling clap_lex v0.2.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.2.15
[INFO] [stderr]    Compiling clap v3.2.15
[INFO] [stderr]    Compiling snailshell v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let mut graphemes = format_graphemes(text);
[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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.26s
[INFO] running `Command { std: "docker" "inspect" "5ed58373048445f3b2622b1030307a1dde6c762976407f96d2c8cc42fd747a31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ed58373048445f3b2622b1030307a1dde6c762976407f96d2c8cc42fd747a31", kill_on_drop: false }`
[INFO] [stdout] 5ed58373048445f3b2622b1030307a1dde6c762976407f96d2c8cc42fd747a31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ddc3cd99e2d10c150794e235c2d26678daeea111387517f0a3662dba55b23206
[INFO] running `Command { std: "docker" "start" "-a" "ddc3cd99e2d10c150794e235c2d26678daeea111387517f0a3662dba55b23206", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling smallvec v1.9.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.8.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling clap v3.2.15
[INFO] [stderr]    Compiling signal-hook-mio v0.2.3
[INFO] [stderr]    Compiling crossterm v0.24.0
[INFO] [stderr]    Compiling snailshell v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let mut graphemes = format_graphemes(text);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let mut graphemes = format_graphemes(text);
[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]     Finished `test` profile [unoptimized + debuginfo] target(s) in 8.30s
[INFO] running `Command { std: "docker" "inspect" "ddc3cd99e2d10c150794e235c2d26678daeea111387517f0a3662dba55b23206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddc3cd99e2d10c150794e235c2d26678daeea111387517f0a3662dba55b23206", kill_on_drop: false }`
[INFO] [stdout] ddc3cd99e2d10c150794e235c2d26678daeea111387517f0a3662dba55b23206