[INFO] fetching crate ur20-modbus 0.4.0...
[INFO] testing ur20-modbus-0.4.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate ur20-modbus 0.4.0 into /workspace/builds/worker-98/source
[INFO] validating manifest of crates.io crate ur20-modbus 0.4.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ur20-modbus 0.4.0
[INFO] finished tweaking crates.io crate ur20-modbus 0.4.0
[INFO] tweaked toml for crates.io crate ur20-modbus 0.4.0 written to /workspace/builds/worker-98/source/Cargo.toml
[INFO] crate crates.io crate ur20-modbus 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b4692bb7473b6ab3756f4cbda4aaad85740f32bf3cdfbae07c7b989d9bf4a8b
[INFO] running `Command { std: "docker" "start" "-a" "7b4692bb7473b6ab3756f4cbda4aaad85740f32bf3cdfbae07c7b989d9bf4a8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b4692bb7473b6ab3756f4cbda4aaad85740f32bf3cdfbae07c7b989d9bf4a8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b4692bb7473b6ab3756f4cbda4aaad85740f32bf3cdfbae07c7b989d9bf4a8b", kill_on_drop: false }`
[INFO] [stdout] 7b4692bb7473b6ab3756f4cbda4aaad85740f32bf3cdfbae07c7b989d9bf4a8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] acf37996ad19dc80a8b5aa286404ea34189268de67798fa838fb4e428c5cf9db
[INFO] running `Command { std: "docker" "start" "-a" "acf37996ad19dc80a8b5aa286404ea34189268de67798fa838fb4e428c5cf9db", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling arc-swap v0.4.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling futures-core v0.3.4
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling pin-project-lite v0.1.4
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling futures-sink v0.3.4
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling futures-task v0.3.4
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling smallvec v1.2.0
[INFO] [stderr]    Compiling futures-util v0.3.4
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling signal-hook-registry v1.2.0
[INFO] [stderr]    Compiling num_cpus v1.12.0
[INFO] [stderr]    Compiling mio v0.6.21
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling ur20 v0.5.1
[INFO] [stderr]    Compiling tokio v0.2.13
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling tokio-modbus v0.4.0
[INFO] [stderr]    Compiling ur20-modbus v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.68s
[INFO] running `Command { std: "docker" "inspect" "acf37996ad19dc80a8b5aa286404ea34189268de67798fa838fb4e428c5cf9db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acf37996ad19dc80a8b5aa286404ea34189268de67798fa838fb4e428c5cf9db", kill_on_drop: false }`
[INFO] [stdout] acf37996ad19dc80a8b5aa286404ea34189268de67798fa838fb4e428c5cf9db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a587cc76a4d192fc3af86c735620198ca0e0df415deb09805e0bd72b6827523
[INFO] running `Command { std: "docker" "start" "-a" "1a587cc76a4d192fc3af86c735620198ca0e0df415deb09805e0bd72b6827523", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ur20-modbus v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.23s
[INFO] running `Command { std: "docker" "inspect" "1a587cc76a4d192fc3af86c735620198ca0e0df415deb09805e0bd72b6827523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a587cc76a4d192fc3af86c735620198ca0e0df415deb09805e0bd72b6827523", kill_on_drop: false }`
[INFO] [stdout] 1a587cc76a4d192fc3af86c735620198ca0e0df415deb09805e0bd72b6827523
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a3ff64e44e5bde0f5fc7d816cfa9fd34296297b37b16030247ab5617c5502d37
[INFO] running `Command { std: "docker" "start" "-a" "a3ff64e44e5bde0f5fc7d816cfa9fd34296297b37b16030247ab5617c5502d37", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.36s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ur20_modbus-a2bd68ec890b5c0b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ur20-modbus
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 5) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 8.72s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a3ff64e44e5bde0f5fc7d816cfa9fd34296297b37b16030247ab5617c5502d37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3ff64e44e5bde0f5fc7d816cfa9fd34296297b37b16030247ab5617c5502d37", kill_on_drop: false }`
[INFO] [stdout] a3ff64e44e5bde0f5fc7d816cfa9fd34296297b37b16030247ab5617c5502d37