[INFO] fetching crate tmux-rs 0.0.3...
[INFO] checking tmux-rs-0.0.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate tmux-rs 0.0.3 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate tmux-rs 0.0.3
[INFO] finished tweaking crates.io crate tmux-rs 0.0.3
[INFO] tweaked toml for crates.io crate tmux-rs 0.0.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tmux-rs 0.0.3 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tmux-rs 0.0.3 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 812771a8cdc6ac081ee17d49e26baf198cf11879e1926ef983dd46b1c5bd8a4a
[INFO] running `Command { std: "docker" "start" "-a" "812771a8cdc6ac081ee17d49e26baf198cf11879e1926ef983dd46b1c5bd8a4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "812771a8cdc6ac081ee17d49e26baf198cf11879e1926ef983dd46b1c5bd8a4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "812771a8cdc6ac081ee17d49e26baf198cf11879e1926ef983dd46b1c5bd8a4a", kill_on_drop: false }`
[INFO] [stdout] 812771a8cdc6ac081ee17d49e26baf198cf11879e1926ef983dd46b1c5bd8a4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ded0b2b23a984a9ecf0fd4d9b5c9f3ce15dbb8c7a167b784adc7fdeb53d2bb52
[INFO] running `Command { std: "docker" "start" "-a" "ded0b2b23a984a9ecf0fd4d9b5c9f3ce15dbb8c7a167b784adc7fdeb53d2bb52", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling rustversion v1.0.21
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling hashbrown v0.15.4
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling siphasher v1.0.1
[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]    Compiling term v1.0.2
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling fixedbitset v0.5.7
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling bit-vec v0.8.0
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling ascii-canvas v4.0.0
[INFO] [stderr]    Compiling petgraph v0.7.1
[INFO] [stderr]    Compiling bit-set v0.8.0
[INFO] [stderr]    Compiling ena v0.14.3
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling lalrpop-util v0.22.2
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]     Checking bitflags v2.9.1
[INFO] [stderr]    Compiling string_cache v0.8.9
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling lalrpop v0.22.2
[INFO] [stderr]    Compiling tmux-rs v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `format_printf`
[INFO] [stdout]    --> src/format.rs:495:16
[INFO] [stdout]     |
[INFO] [stdout] 495 | pub(crate) use format_printf;
[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: `args_print_add`
[INFO] [stdout]    --> src/arguments.rs:478:16
[INFO] [stdout]     |
[INFO] [stdout] 478 | pub(crate) use args_print_add;
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `screen_write_vnputs`
[INFO] [stdout]     --> src/lib.rs:2904:5
[INFO] [stdout]      |
[INFO] [stdout] 2904 |     screen_write_vnputs, screen_write_vnputs_,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `format_printf`
[INFO] [stdout]    --> src/format.rs:495:16
[INFO] [stdout]     |
[INFO] [stdout] 495 | pub(crate) use format_printf;
[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: `args_print_add`
[INFO] [stdout]    --> src/arguments.rs:478:16
[INFO] [stdout]     |
[INFO] [stdout] 478 | pub(crate) use args_print_add;
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `screen_write_vnputs`
[INFO] [stdout]     --> src/lib.rs:2904:5
[INFO] [stdout]      |
[INFO] [stdout] 2904 |     screen_write_vnputs, screen_write_vnputs_,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `oli` is never read
[INFO] [stdout]   --> src/compat/getopt.rs:41:32
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut oli: *mut u8 = null_mut();
[INFO] [stdout]    |                                ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `wp` is never read
[INFO] [stdout]     --> src/cmd_/cmd_find.rs:1321:22
[INFO] [stdout]      |
[INFO] [stdout] 1321 |         let mut wp = null_mut();
[INFO] [stdout]      |                      ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s` is never read
[INFO] [stdout]    --> src/cmd_/mod.rs:838:35
[INFO] [stdout]     |
[INFO] [stdout] 838 |         let mut s: *mut session = null_mut();
[INFO] [stdout]     |                                   ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `oli` is never read
[INFO] [stdout]   --> src/compat/getopt.rs:41:32
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut oli: *mut u8 = null_mut();
[INFO] [stdout]    |                                ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `wme` is never read
[INFO] [stdout]     --> src/server_client.rs:1824:47
[INFO] [stdout]      |
[INFO] [stdout] 1824 |         let mut wme: *mut window_mode_entry = null_mut();
[INFO] [stdout]      |                                               ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `wp` is never read
[INFO] [stdout]     --> src/cmd_/cmd_find.rs:1321:22
[INFO] [stdout]      |
[INFO] [stdout] 1321 |         let mut wp = null_mut();
[INFO] [stdout]      |                      ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s` is never read
[INFO] [stdout]    --> src/cmd_/mod.rs:838:35
[INFO] [stdout]     |
[INFO] [stdout] 838 |         let mut s: *mut session = null_mut();
[INFO] [stdout]     |                                   ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(usize, Tok, usize), LexicalError>
[INFO] [stdout]      --> /opt/rustwide/target/debug/build/tmux-rs-05a5c45200c33d29/out/cmd_parse.rs:54566:9
[INFO] [stdout]       |
[INFO] [stdout] 54566 |         self.map_err(|error| __lalrpop_util::ParseError::User { error })
[INFO] [stdout]       |         ^^^^
[INFO] [stdout]       |
[INFO] [stdout]       = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(usize, Tok, usize), LexicalError>
[INFO] [stdout]    --> src/cmd_parse.rs:692:70
[INFO] [stdout]     |
[INFO] [stdout] 692 |             unsafe { super::yylex_(&mut *self.ps.as_ptr()).map(|tok| Ok((0, tok, 0))) }
[INFO] [stdout]     |                                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tmux-rs` (lib test) due to 2 previous errors; 7 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: value assigned to `wme` is never read
[INFO] [stdout]     --> src/server_client.rs:1824:47
[INFO] [stdout]      |
[INFO] [stdout] 1824 |         let mut wme: *mut window_mode_entry = null_mut();
[INFO] [stdout]      |                                               ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(usize, Tok, usize), LexicalError>
[INFO] [stdout]      --> /opt/rustwide/target/debug/build/tmux-rs-05a5c45200c33d29/out/cmd_parse.rs:54566:9
[INFO] [stdout]       |
[INFO] [stdout] 54566 |         self.map_err(|error| __lalrpop_util::ParseError::User { error })
[INFO] [stdout]       |         ^^^^
[INFO] [stdout]       |
[INFO] [stdout]       = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<(usize, Tok, usize), LexicalError>
[INFO] [stdout]    --> src/cmd_parse.rs:692:70
[INFO] [stdout]     |
[INFO] [stdout] 692 |             unsafe { super::yylex_(&mut *self.ps.as_ptr()).map(|tok| Ok((0, tok, 0))) }
[INFO] [stdout]     |                                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tmux-rs` (lib) due to 2 previous errors; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "ded0b2b23a984a9ecf0fd4d9b5c9f3ce15dbb8c7a167b784adc7fdeb53d2bb52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ded0b2b23a984a9ecf0fd4d9b5c9f3ce15dbb8c7a167b784adc7fdeb53d2bb52", kill_on_drop: false }`
[INFO] [stdout] ded0b2b23a984a9ecf0fd4d9b5c9f3ce15dbb8c7a167b784adc7fdeb53d2bb52