[INFO] fetching crate mqttrs 0.4.0...
[INFO] checking mqttrs-0.4.0 against try#82acd1d76add2232e19c1f0feb250d2a19ec6efe for pr-81213
[INFO] extracting crate mqttrs 0.4.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate mqttrs 0.4.0 on toolchain 82acd1d76add2232e19c1f0feb250d2a19ec6efe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mqttrs 0.4.0
[INFO] finished tweaking crates.io crate mqttrs 0.4.0
[INFO] tweaked toml for crates.io crate mqttrs 0.4.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3db4ea0b081f669cb09d1cf2e790e241e5be3af3279ccf5b6a1924ce964c9056
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3db4ea0b081f669cb09d1cf2e790e241e5be3af3279ccf5b6a1924ce964c9056", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3db4ea0b081f669cb09d1cf2e790e241e5be3af3279ccf5b6a1924ce964c9056", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3db4ea0b081f669cb09d1cf2e790e241e5be3af3279ccf5b6a1924ce964c9056", kill_on_drop: false }`
[INFO] [stdout] 3db4ea0b081f669cb09d1cf2e790e241e5be3af3279ccf5b6a1924ce964c9056
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bec16010d074516e59ff32abd030566f81fbbb4ae82217e738495ea8159e693d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bec16010d074516e59ff32abd030566f81fbbb4ae82217e738495ea8159e693d", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling syn v1.0.59
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.120
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling serde v1.0.120
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking libc v0.2.82
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking rand v0.8.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking as-slice v0.1.4
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking heapless v0.5.6
[INFO] [stderr]     Checking proptest v0.10.1
[INFO] [stderr]     Checking mqttrs v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ArrayLength`, `String`, `Vec`
[INFO] [stdout]  --> src/decoder.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use heapless::{String, Vec, ArrayLength};
[INFO] [stdout]   |                ^^^^^^  ^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `String`, `Vec`, `consts`
[INFO] [stdout]  --> src/publish.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use heapless::{String, Vec, consts};
[INFO] [stdout]   |                ^^^^^^  ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ArrayLength`, `String`, `Vec`
[INFO] [stdout]  --> src/decoder.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use heapless::{String, Vec, ArrayLength};
[INFO] [stdout]   |                ^^^^^^  ^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `String`, `Vec`, `consts`
[INFO] [stdout]  --> src/publish.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use heapless::{String, Vec, consts};
[INFO] [stdout]   |                ^^^^^^  ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bytes::BytesMut`
[INFO] [stdout]  --> src/encoder_test.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use bytes::BytesMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.43s
[INFO] running `Command { std: "docker" "inspect" "bec16010d074516e59ff32abd030566f81fbbb4ae82217e738495ea8159e693d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bec16010d074516e59ff32abd030566f81fbbb4ae82217e738495ea8159e693d", kill_on_drop: false }`
[INFO] [stdout] bec16010d074516e59ff32abd030566f81fbbb4ae82217e738495ea8159e693d