[INFO] fetching crate wordcloud-rs 0.1.14...
[INFO] checking wordcloud-rs-0.1.14 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate wordcloud-rs 0.1.14 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate wordcloud-rs 0.1.14 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wordcloud-rs 0.1.14
[INFO] finished tweaking crates.io crate wordcloud-rs 0.1.14
[INFO] tweaked toml for crates.io crate wordcloud-rs 0.1.14 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 96 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding env_logger v0.10.2 (latest: v0.11.3)
[INFO] [stderr]       Adding fontdue v0.7.3 (latest: v0.8.0)
[INFO] [stderr]       Adding hashbrown v0.13.2 (latest: v0.14.3)
[INFO] [stderr]       Adding image v0.24.9 (latest: v0.25.1)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding siphasher v0.3.11 (latest: v1.0.1)
[INFO] [stderr]       Adding ttf-parser v0.15.2 (latest: v0.20.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fontdue v0.7.3
[INFO] [stderr]   Downloaded twemoji-rs v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66a3029295ec63b945444d6ef48f661f795df5494bc332c16f37ce779b3d37de
[INFO] running `Command { std: "docker" "start" "-a" "66a3029295ec63b945444d6ef48f661f795df5494bc332c16f37ce779b3d37de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66a3029295ec63b945444d6ef48f661f795df5494bc332c16f37ce779b3d37de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66a3029295ec63b945444d6ef48f661f795df5494bc332c16f37ce779b3d37de", kill_on_drop: false }`
[INFO] [stdout] 66a3029295ec63b945444d6ef48f661f795df5494bc332c16f37ce779b3d37de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e90ba4f6cac001aa9520efedf393b8317e6116cc37dc5670f8151daaca9f3c81
[INFO] running `Command { std: "docker" "start" "-a" "e90ba4f6cac001aa9520efedf393b8317e6116cc37dc5670f8151daaca9f3c81", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling palette v0.7.5
[INFO] [stderr]    Compiling palette_derive v0.7.5
[INFO] [stderr]     Checking ttf-parser v0.15.2
[INFO] [stderr]     Checking fast-srgb8 v1.0.0
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]     Checking twemoji-rs v0.1.2
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking ahash v0.8.11
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking fontdue v0.7.3
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking image v0.24.9
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking wordcloud-rs v0.1.14 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `env_logger` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     use env_logger;
[INFO] [stdout]    |         ^^^^^^^^^^ the item `env_logger` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `indexes` is never read
[INFO] [stdout]   --> src/indexed_chars.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct IndexedChars {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 16 |     pub indexes: Vec<usize>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `indexes` is never read
[INFO] [stdout]   --> src/indexed_chars.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct IndexedChars {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 16 |     pub indexes: Vec<usize>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.12s
[INFO] running `Command { std: "docker" "inspect" "e90ba4f6cac001aa9520efedf393b8317e6116cc37dc5670f8151daaca9f3c81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e90ba4f6cac001aa9520efedf393b8317e6116cc37dc5670f8151daaca9f3c81", kill_on_drop: false }`
[INFO] [stdout] e90ba4f6cac001aa9520efedf393b8317e6116cc37dc5670f8151daaca9f3c81
[INFO] checking wordcloud-rs-0.1.14 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate wordcloud-rs 0.1.14 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate wordcloud-rs 0.1.14 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wordcloud-rs 0.1.14
[INFO] finished tweaking crates.io crate wordcloud-rs 0.1.14
[INFO] tweaked toml for crates.io crate wordcloud-rs 0.1.14 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 96 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding env_logger v0.10.2 (latest: v0.11.3)
[INFO] [stderr]       Adding fontdue v0.7.3 (latest: v0.8.0)
[INFO] [stderr]       Adding hashbrown v0.13.2 (latest: v0.14.3)
[INFO] [stderr]       Adding image v0.24.9 (latest: v0.25.1)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding siphasher v0.3.11 (latest: v1.0.1)
[INFO] [stderr]       Adding ttf-parser v0.15.2 (latest: v0.20.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 487fd53ef9ef165b546f475b4924eb01d7e125f42aa4649624ba674c83fe1ff9
[INFO] running `Command { std: "docker" "start" "-a" "487fd53ef9ef165b546f475b4924eb01d7e125f42aa4649624ba674c83fe1ff9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "487fd53ef9ef165b546f475b4924eb01d7e125f42aa4649624ba674c83fe1ff9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "487fd53ef9ef165b546f475b4924eb01d7e125f42aa4649624ba674c83fe1ff9", kill_on_drop: false }`
[INFO] [stdout] 487fd53ef9ef165b546f475b4924eb01d7e125f42aa4649624ba674c83fe1ff9
[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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 009911594ba6496ab6d1f90bf99308905319a20887c3de1e4e35c8d2d5e2928b
[INFO] running `Command { std: "docker" "start" "-a" "009911594ba6496ab6d1f90bf99308905319a20887c3de1e4e35c8d2d5e2928b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling palette v0.7.5
[INFO] [stderr]    Compiling palette_derive v0.7.5
[INFO] [stderr]     Checking ttf-parser v0.15.2
[INFO] [stderr]     Checking fast-srgb8 v1.0.0
[INFO] [stderr]     Checking twemoji-rs v0.1.2
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking ahash v0.8.11
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking fontdue v0.7.3
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking image v0.24.9
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking wordcloud-rs v0.1.14 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `env_logger` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     use env_logger;
[INFO] [stdout]    |         ^^^^^^^^^^ the item `env_logger` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `indexes` is never read
[INFO] [stdout]   --> src/indexed_chars.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct IndexedChars {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 16 |     pub indexes: Vec<usize>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `indexes` is never read
[INFO] [stdout]   --> src/indexed_chars.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct IndexedChars {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 16 |     pub indexes: Vec<usize>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.62s
[INFO] running `Command { std: "docker" "inspect" "009911594ba6496ab6d1f90bf99308905319a20887c3de1e4e35c8d2d5e2928b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "009911594ba6496ab6d1f90bf99308905319a20887c3de1e4e35c8d2d5e2928b", kill_on_drop: false }`
[INFO] [stdout] 009911594ba6496ab6d1f90bf99308905319a20887c3de1e4e35c8d2d5e2928b