[INFO] fetching crate mechutil 0.3.0...
[INFO] checking mechutil-0.3.0 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate mechutil 0.3.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate mechutil 0.3.0 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mechutil 0.3.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mechutil 0.3.0
[INFO] tweaked toml for crates.io crate mechutil 0.3.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate mechutil 0.3.0 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" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c21182576515a961efcc761ddc70088fa5884264256325e10dc685e980f3fd29
[INFO] running `Command { std: "docker" "start" "-a" "c21182576515a961efcc761ddc70088fa5884264256325e10dc685e980f3fd29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c21182576515a961efcc761ddc70088fa5884264256325e10dc685e980f3fd29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c21182576515a961efcc761ddc70088fa5884264256325e10dc685e980f3fd29", kill_on_drop: false }`
[INFO] [stdout] c21182576515a961efcc761ddc70088fa5884264256325e10dc685e980f3fd29
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 946907f9dc412e01bed6603e59f6585af7e9258cdb594508fdecb94a4c1ead20
[INFO] running `Command { std: "docker" "start" "-a" "946907f9dc412e01bed6603e59f6585af7e9258cdb594508fdecb94a4c1ead20", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling anyhow v1.0.80
[INFO] [stderr]     Checking bytes v1.7.1
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling syn v2.0.51
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking mio v1.0.2
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling async-trait v0.1.82
[INFO] [stderr]     Checking tokio v1.40.0
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.114
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking mechutil v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/variant.rs:170:25
[INFO] [stdout]     |
[INFO] [stdout] 170 |                         i => Ok(VariantValue::Int64(int)),
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> src/variant.rs:177:25
[INFO] [stdout]     |
[INFO] [stdout] 177 |                         u => Ok(VariantValue::UInt64(uint)),
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ProcessRoute` is never constructed
[INFO] [stdout]    --> src/actor.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 126 | enum ActorMessage {
[INFO] [stdout]     |      ------------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 132 |     ProcessRoute{
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `transaction_id` and `code` are never read
[INFO] [stdout]    --> src/command.rs:233:5
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub struct RegisterCommand {
[INFO] [stdout]     |            --------------- fields in this struct
[INFO] [stdout] 232 |     /// Transaction ID. Should be non-zero.
[INFO] [stdout] 233 |     transaction_id : u32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 234 |     /// Command code. 
[INFO] [stdout] 235 |     code : i32
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/variant.rs:170:25
[INFO] [stdout]     |
[INFO] [stdout] 170 |                         i => Ok(VariantValue::Int64(int)),
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> src/variant.rs:177:25
[INFO] [stdout]     |
[INFO] [stdout] 177 |                         u => Ok(VariantValue::UInt64(uint)),
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]   --> src/bin/playground.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use tokio::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]   --> src/bin/playground.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use tokio::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ProcessRoute` is never constructed
[INFO] [stdout]    --> src/actor.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 126 | enum ActorMessage {
[INFO] [stdout]     |      ------------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 132 |     ProcessRoute{
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `transaction_id` and `code` are never read
[INFO] [stdout]    --> src/command.rs:233:5
[INFO] [stdout]     |
[INFO] [stdout] 231 | pub struct RegisterCommand {
[INFO] [stdout]     |            --------------- fields in this struct
[INFO] [stdout] 232 |     /// Transaction ID. Should be non-zero.
[INFO] [stdout] 233 |     transaction_id : u32,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 234 |     /// Command code. 
[INFO] [stdout] 235 |     code : i32
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.45s
[INFO] running `Command { std: "docker" "inspect" "946907f9dc412e01bed6603e59f6585af7e9258cdb594508fdecb94a4c1ead20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "946907f9dc412e01bed6603e59f6585af7e9258cdb594508fdecb94a4c1ead20", kill_on_drop: false }`
[INFO] [stdout] 946907f9dc412e01bed6603e59f6585af7e9258cdb594508fdecb94a4c1ead20