[INFO] fetching crate musli-json 0.0.92...
[INFO] checking musli-json-0.0.92 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate musli-json 0.0.92 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate musli-json 0.0.92 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate musli-json 0.0.92
[INFO] finished tweaking crates.io crate musli-json 0.0.92
[INFO] tweaked toml for crates.io crate musli-json 0.0.92 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 29 packages
[INFO] [stderr]       Adding musli v0.0.92 (latest: v0.0.108)
[INFO] [stderr]       Adding musli-common v0.0.92 (latest: v0.0.108)
[INFO] [stderr]       Adding musli-macros v0.0.92 (latest: v0.0.108)
[INFO] [stderr]       Adding musli-storage v0.0.92 (latest: v0.0.108)
[INFO] [stderr]       Adding musli-value v0.0.92 (latest: v0.0.108)
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lexical-core v0.8.5
[INFO] [stderr]   Downloaded lexical-parse-integer v0.8.6
[INFO] [stderr]   Downloaded lexical-util v0.8.5
[INFO] [stderr]   Downloaded lexical v6.1.1
[INFO] [stderr]   Downloaded musli-common v0.0.92
[INFO] [stderr]   Downloaded musli-macros v0.0.92
[INFO] [stderr]   Downloaded lexical-write-integer v0.8.5
[INFO] [stderr]   Downloaded lexical-write-float v0.8.5
[INFO] [stderr]   Downloaded musli v0.0.92
[INFO] [stderr]   Downloaded musli-value v0.0.92
[INFO] [stderr]   Downloaded lexical-parse-float v0.8.5
[INFO] [stderr]   Downloaded musli-storage v0.0.92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4fc05da4cab6da1f88f4ee4efd76ec56d299d720f90c43f7873e17fcb2b8551f
[INFO] running `Command { std: "docker" "start" "-a" "4fc05da4cab6da1f88f4ee4efd76ec56d299d720f90c43f7873e17fcb2b8551f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fc05da4cab6da1f88f4ee4efd76ec56d299d720f90c43f7873e17fcb2b8551f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fc05da4cab6da1f88f4ee4efd76ec56d299d720f90c43f7873e17fcb2b8551f", kill_on_drop: false }`
[INFO] [stdout] 4fc05da4cab6da1f88f4ee4efd76ec56d299d720f90c43f7873e17fcb2b8551f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d1b43e0d709feea752e57ecd7ee9f4a3ce59a773408581cc78f873a58f5ead8
[INFO] running `Command { std: "docker" "start" "-a" "9d1b43e0d709feea752e57ecd7ee9f4a3ce59a773408581cc78f873a58f5ead8", kill_on_drop: false }`
[INFO] [stderr]     Checking lexical-util v0.8.5
[INFO] [stderr]     Checking simdutf8 v0.1.4
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking lexical-write-integer v0.8.5
[INFO] [stderr]     Checking lexical-parse-integer v0.8.6
[INFO] [stderr]     Checking lexical-parse-float v0.8.5
[INFO] [stderr]     Checking lexical-write-float v0.8.5
[INFO] [stderr]     Checking lexical-core v0.8.5
[INFO] [stderr]     Checking lexical v6.1.1
[INFO] [stderr]    Compiling musli-macros v0.0.92
[INFO] [stderr]     Checking musli v0.0.92
[INFO] [stderr]     Checking musli-common v0.0.92
[INFO] [stderr]     Checking musli-storage v0.0.92
[INFO] [stderr]     Checking musli-value v0.0.92
[INFO] [stderr]     Checking musli-json v0.0.92 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `checked_mul` is never used
[INFO] [stdout]    --> src/reader/integer.rs:573:12
[INFO] [stdout]     |
[INFO] [stdout] 554 |     pub(crate) trait Unsigned: Sized + fmt::Debug + Add<Self, Output = Self> {
[INFO] [stdout]     |                      -------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 573 |         fn checked_mul(self, other: Self) -> Option<Self>;
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `negate` is never used
[INFO] [stdout]    --> src/reader/integer.rs:589:12
[INFO] [stdout]     |
[INFO] [stdout] 586 |     pub(crate) trait Signed: Sized + fmt::Debug {
[INFO] [stdout]     |                      ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 589 |         fn negate(self) -> Option<Self::Unsigned>;
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `checked_mul` is never used
[INFO] [stdout]    --> src/reader/integer.rs:573:12
[INFO] [stdout]     |
[INFO] [stdout] 554 |     pub(crate) trait Unsigned: Sized + fmt::Debug + Add<Self, Output = Self> {
[INFO] [stdout]     |                      -------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 573 |         fn checked_mul(self, other: Self) -> Option<Self>;
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `negate` is never used
[INFO] [stdout]    --> src/reader/integer.rs:589:12
[INFO] [stdout]     |
[INFO] [stdout] 586 |     pub(crate) trait Signed: Sized + fmt::Debug {
[INFO] [stdout]     |                      ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 589 |         fn negate(self) -> Option<Self::Unsigned>;
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.22s
[INFO] running `Command { std: "docker" "inspect" "9d1b43e0d709feea752e57ecd7ee9f4a3ce59a773408581cc78f873a58f5ead8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d1b43e0d709feea752e57ecd7ee9f4a3ce59a773408581cc78f873a58f5ead8", kill_on_drop: false }`
[INFO] [stdout] 9d1b43e0d709feea752e57ecd7ee9f4a3ce59a773408581cc78f873a58f5ead8