[INFO] fetching crate wasm-msgpack 0.6.2...
[INFO] checking wasm-msgpack-0.6.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate wasm-msgpack 0.6.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate wasm-msgpack 0.6.2 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 wasm-msgpack 0.6.2
[INFO] finished tweaking crates.io crate wasm-msgpack 0.6.2
[INFO] tweaked toml for crates.io crate wasm-msgpack 0.6.2 written to /workspace/builds/worker-4-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 51 packages
[INFO] [stderr]       Adding hash32 v0.2.1 (latest: v0.3.1)
[INFO] [stderr]       Adding heapless v0.7.17 (latest: v0.8.0)
[INFO] [stderr]       Adding rstest v0.17.0 (latest: v0.18.2)
[INFO] [stderr]       Adding rstest_macros v0.17.0 (latest: v0.18.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding yansi v0.5.1 (latest: v1.0.1)
[INFO] [stderr]       Adding zerocopy v0.6.6 (latest: v0.7.32)
[INFO] [stderr]       Adding zerocopy-derive v0.6.6 (latest: v0.7.32)
[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 zerocopy v0.6.6
[INFO] [stderr]   Downloaded zerocopy-derive v0.6.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a5fb962584d22323ab32eff57bec68bbe66780a811800ec4c61f164359ea2bc9
[INFO] running `Command { std: "docker" "start" "-a" "a5fb962584d22323ab32eff57bec68bbe66780a811800ec4c61f164359ea2bc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5fb962584d22323ab32eff57bec68bbe66780a811800ec4c61f164359ea2bc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5fb962584d22323ab32eff57bec68bbe66780a811800ec4c61f164359ea2bc9", kill_on_drop: false }`
[INFO] [stdout] a5fb962584d22323ab32eff57bec68bbe66780a811800ec4c61f164359ea2bc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c67bf90db73fca49654947206a729b4fe55d51ecc93db669b8755fa91a906b87
[INFO] running `Command { std: "docker" "start" "-a" "c67bf90db73fca49654947206a729b4fe55d51ecc93db669b8755fa91a906b87", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking futures-timer v3.0.3
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]    Compiling rstest_macros v0.17.0
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking pretty_assertions v1.4.0
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking rmp v0.8.12
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling zerocopy-derive v0.6.6
[INFO] [stderr]    Compiling serde_repr v0.1.18
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking zerocopy v0.6.6
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking rstest v0.17.0
[INFO] [stderr]     Checking serde_bytes v0.11.14
[INFO] [stderr]     Checking rmp-serde v1.1.2
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking wasm-msgpack v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/encode/mod.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::{convert::From, ops::Deref};
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/core/src/prelude/mod.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/ext/timestamp.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                     ^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/core/src/prelude/mod.rs:65:30
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/ext/timestamp.rs:8:30
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                              ^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/core/src/prelude/mod.rs:65:39
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/ext/mod.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use core::{convert::TryInto, fmt::Display, marker::PhantomData};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/core/src/prelude/mod.rs:65:39
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/encode/mod.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::{convert::From, ops::Deref};
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/core/src/prelude/mod.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/ext/timestamp.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                     ^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/core/src/prelude/mod.rs:65:30
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/ext/timestamp.rs:8:30
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                              ^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/core/src/prelude/mod.rs:65:39
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/ext/mod.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use core::{convert::TryInto, fmt::Display, marker::PhantomData};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/core/src/prelude/mod.rs:65:39
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.12s
[INFO] running `Command { std: "docker" "inspect" "c67bf90db73fca49654947206a729b4fe55d51ecc93db669b8755fa91a906b87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c67bf90db73fca49654947206a729b4fe55d51ecc93db669b8755fa91a906b87", kill_on_drop: false }`
[INFO] [stdout] c67bf90db73fca49654947206a729b4fe55d51ecc93db669b8755fa91a906b87