[INFO] fetching crate emtrace 0.1.0...
[INFO] checking emtrace-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate emtrace 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate emtrace 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate emtrace 0.1.0
[INFO] tweaked toml for crates.io crate emtrace 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate emtrace 0.1.0 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 emtrace 0.1.0 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 03d76927d617aedf4aaadff9c38e6002d1d39a59eebb03b6bb99935eb780cc96
[INFO] running `Command { std: "docker" "start" "-a" "03d76927d617aedf4aaadff9c38e6002d1d39a59eebb03b6bb99935eb780cc96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03d76927d617aedf4aaadff9c38e6002d1d39a59eebb03b6bb99935eb780cc96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03d76927d617aedf4aaadff9c38e6002d1d39a59eebb03b6bb99935eb780cc96", kill_on_drop: false }`
[INFO] [stdout] 03d76927d617aedf4aaadff9c38e6002d1d39a59eebb03b6bb99935eb780cc96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 433e8a834de15dd9cc45dbe244c7e7cfa47df6558469a1003b7ab66b7e34febb
[INFO] running `Command { std: "docker" "start" "-a" "433e8a834de15dd9cc45dbe244c7e7cfa47df6558469a1003b7ab66b7e34febb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking regex-syntax v0.8.6
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking clap_lex v0.7.5
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking serde_json v1.0.145
[INFO] [stderr]     Checking oorandom v11.1.5
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking half v2.6.0
[INFO] [stderr]     Checking clap_builder v4.5.48
[INFO] [stderr]     Checking emtrace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking plotters-svg v0.3.7
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking rayon v1.11.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking regex-automata v0.4.11
[INFO] [stderr]     Checking criterion-plot v0.6.0
[INFO] [stderr]     Checking regex v1.11.3
[INFO] [stderr]     Checking clap v4.5.48
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking criterion v0.7.0
[INFO] [stdout] warning: unused import: `trace`
[INFO] [stdout]     --> src/lib.rs:1035:24
[INFO] [stdout]      |
[INFO] [stdout] 1035 |     use super::{SizeT, trace};
[INFO] [stdout]      |                        ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/test_vec.rs:39:18
[INFO] [stdout]    |
[INFO] [stdout] 39 |         .map(|s| String::from_str(s).unwrap())
[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<String, Infallible>
[INFO] [stdout]   --> examples/test_vec.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         String::from_str("An").unwrap(),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/test_vec.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         String::from_str("array").unwrap(),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/test_vec.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         String::from_str("of").unwrap(),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/test_vec.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         String::from_str("String").unwrap(),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `emtrace` (example "test_vec") due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/lib.rs:1126:22
[INFO] [stdout]      |
[INFO] [stdout] 1126 |         let owning = String::from_str(literal).unwrap();
[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<String, Infallible>
[INFO] [stdout]     --> src/lib.rs:1153:22
[INFO] [stdout]      |
[INFO] [stdout] 1153 |             .map(|s| String::from_str(s).unwrap())
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `emtrace` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "433e8a834de15dd9cc45dbe244c7e7cfa47df6558469a1003b7ab66b7e34febb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "433e8a834de15dd9cc45dbe244c7e7cfa47df6558469a1003b7ab66b7e34febb", kill_on_drop: false }`
[INFO] [stdout] 433e8a834de15dd9cc45dbe244c7e7cfa47df6558469a1003b7ab66b7e34febb
