[INFO] fetching crate pro_env 3.0.0-rc2...
[INFO] building pro_env-3.0.0-rc2 against master#d5c88c22807925c189328ef9d923c5d2b11a95b8 for pr-87066-3
[INFO] extracting crate pro_env 3.0.0-rc2 into /workspace/builds/worker-57/source
[INFO] validating manifest of crates.io crate pro_env 3.0.0-rc2 on toolchain d5c88c22807925c189328ef9d923c5d2b11a95b8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pro_env 3.0.0-rc2
[INFO] finished tweaking crates.io crate pro_env 3.0.0-rc2
[INFO] tweaked toml for crates.io crate pro_env 3.0.0-rc2 written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "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-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89462abb4c603de889b8b360fb27ac70d214c6c53d2454a3212bad653e67ae45
[INFO] running `Command { std: "docker" "start" "-a" "89462abb4c603de889b8b360fb27ac70d214c6c53d2454a3212bad653e67ae45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89462abb4c603de889b8b360fb27ac70d214c6c53d2454a3212bad653e67ae45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89462abb4c603de889b8b360fb27ac70d214c6c53d2454a3212bad653e67ae45", kill_on_drop: false }`
[INFO] [stdout] 89462abb4c603de889b8b360fb27ac70d214c6c53d2454a3212bad653e67ae45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf5adc2af2c2031d4d658efecda95e57ca840b2928ab39b7d4279d84d9b379ab
[INFO] running `Command { std: "docker" "start" "-a" "bf5adc2af2c2031d4d658efecda95e57ca840b2928ab39b7d4279d84d9b379ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling block-padding v0.2.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling memory_units v0.4.0
[INFO] [stderr]    Compiling keccak v0.1.0
[INFO] [stderr]    Compiling pro_prelude v3.0.0-rc2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling blake2 v0.9.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling sha3 v0.9.1
[INFO] [stderr]    Compiling sha2 v0.9.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling bitvec v0.20.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling pro_allocator v3.0.0-rc2
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling tetsy-scale-info-derive v0.3.0
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling impl-serde v0.3.1
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling tetsy-scale-codec-derive v2.0.1
[INFO] [stderr]    Compiling tetsy-scale-codec v2.0.1
[INFO] [stderr]    Compiling tetsy-scale-info v0.5.1
[INFO] [stderr]    Compiling pro_primitives v3.0.0-rc2
[INFO] [stderr]    Compiling pro_metadata v3.0.0-rc2
[INFO] [stderr]    Compiling pro_env v3.0.0-rc2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/chain_extension.rs:383:18
[INFO] [stdout]     |
[INFO] [stdout] 383 |                 |mut output| {
[INFO] [stdout]     |                  ----^^^^^^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.27s
[INFO] running `Command { std: "docker" "inspect" "bf5adc2af2c2031d4d658efecda95e57ca840b2928ab39b7d4279d84d9b379ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf5adc2af2c2031d4d658efecda95e57ca840b2928ab39b7d4279d84d9b379ab", kill_on_drop: false }`
[INFO] [stdout] bf5adc2af2c2031d4d658efecda95e57ca840b2928ab39b7d4279d84d9b379ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a38eaa1f2ed2d95867a37c1248785674ad7756e4922a56d6fbc13a563983dc92
[INFO] running `Command { std: "docker" "start" "-a" "a38eaa1f2ed2d95867a37c1248785674ad7756e4922a56d6fbc13a563983dc92", kill_on_drop: false }`
[INFO] [stderr]    Compiling pro_env v3.0.0-rc2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/chain_extension.rs:383:18
[INFO] [stdout]     |
[INFO] [stdout] 383 |                 |mut output| {
[INFO] [stdout]     |                  ----^^^^^^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/chain_extension.rs:383:18
[INFO] [stdout]     |
[INFO] [stdout] 383 |                 |mut output| {
[INFO] [stdout]     |                  ----^^^^^^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.46s
[INFO] running `Command { std: "docker" "inspect" "a38eaa1f2ed2d95867a37c1248785674ad7756e4922a56d6fbc13a563983dc92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a38eaa1f2ed2d95867a37c1248785674ad7756e4922a56d6fbc13a563983dc92", kill_on_drop: false }`
[INFO] [stdout] a38eaa1f2ed2d95867a37c1248785674ad7756e4922a56d6fbc13a563983dc92