[INFO] cloning repository https://github.com/aeryz/mit-6.824-labs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aeryz/mit-6.824-labs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faeryz%2Fmit-6.824-labs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faeryz%2Fmit-6.824-labs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b7ea3e7bf45caeada81ef175cda22e3d22d70b9
[INFO] testing aeryz/mit-6.824-labs against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faeryz%2Fmit-6.824-labs" "/workspace/builds/worker-71/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-71/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aeryz/mit-6.824-labs on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aeryz/mit-6.824-labs
[INFO] finished tweaking git repo https://github.com/aeryz/mit-6.824-labs
[INFO] tweaked toml for git repo https://github.com/aeryz/mit-6.824-labs written to /workspace/builds/worker-71/source/Cargo.toml
[INFO] crate git repo https://github.com/aeryz/mit-6.824-labs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio v0.3.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 716d46a84e1b08a018534cca9558775721aaa9e435aea8a915aa75453ec3cb28
[INFO] running `Command { std: "docker" "start" "-a" "716d46a84e1b08a018534cca9558775721aaa9e435aea8a915aa75453ec3cb28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "716d46a84e1b08a018534cca9558775721aaa9e435aea8a915aa75453ec3cb28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "716d46a84e1b08a018534cca9558775721aaa9e435aea8a915aa75453ec3cb28", kill_on_drop: false }`
[INFO] [stdout] 716d46a84e1b08a018534cca9558775721aaa9e435aea8a915aa75453ec3cb28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01b349850730e597ab65a12a5123b9ab95789945bc2a18100e29634bc05c8987
[INFO] running `Command { std: "docker" "start" "-a" "01b349850730e597ab65a12a5123b9ab95789945bc2a18100e29634bc05c8987", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling futures-core v0.3.8
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]    Compiling futures-sink v0.3.8
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling smallvec v1.6.0
[INFO] [stderr]    Compiling futures-io v0.3.8
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling pin-project-lite v0.2.0
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling bytes v0.6.0
[INFO] [stderr]    Compiling mr-sequential v0.1.0 (/opt/rustwide/workdir/mr-sequential)
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling tokio v0.3.6
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling futures-task v0.3.8
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling parking_lot_core v0.8.2
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling mio v0.7.7
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_core v0.6.1
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rand v0.8.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling tokio-macros v0.3.2
[INFO] [stderr]    Compiling srpc-macros v0.1.0 (https://github.com/aeryz/srpc?branch=main#311d29ca)
[INFO] [stderr]    Compiling pin-project v1.0.2
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling mr-common v0.1.0 (/opt/rustwide/workdir/mr-common)
[INFO] [stderr]    Compiling srpc v0.1.0 (https://github.com/aeryz/srpc?branch=main#311d29ca)
[INFO] [stderr]    Compiling mr-master v0.1.0 (/opt/rustwide/workdir/mr-master)
[INFO] [stderr]    Compiling mr-worker v0.1.0 (/opt/rustwide/workdir/mr-worker)
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `SocketAddr`, `client::Client`, `sync::Arc`, `transport::Transport`
[INFO] [stdout]  --> mr-worker/src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     srpc::{client::Client, transport::Transport},
[INFO] [stdout]   |            ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 |     std::{
[INFO] [stdout] 4 |         net::{IpAddr, Ipv4Addr, SocketAddr},
[INFO] [stdout]   |               ^^^^^^  ^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 5 |         sync::Arc,
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 52.48s
[INFO] running `Command { std: "docker" "inspect" "01b349850730e597ab65a12a5123b9ab95789945bc2a18100e29634bc05c8987", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01b349850730e597ab65a12a5123b9ab95789945bc2a18100e29634bc05c8987", kill_on_drop: false }`
[INFO] [stdout] 01b349850730e597ab65a12a5123b9ab95789945bc2a18100e29634bc05c8987
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8252b854bd759680df5150dc7759690a8355fb2f733a0b1111fd3310281e1f76
[INFO] running `Command { std: "docker" "start" "-a" "8252b854bd759680df5150dc7759690a8355fb2f733a0b1111fd3310281e1f76", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mr-sequential v0.1.0 (/opt/rustwide/workdir/mr-sequential)
[INFO] [stderr]    Compiling mr-common v0.1.0 (/opt/rustwide/workdir/mr-common)
[INFO] [stderr]    Compiling mr-master v0.1.0 (/opt/rustwide/workdir/mr-master)
[INFO] [stderr]    Compiling mr-worker v0.1.0 (/opt/rustwide/workdir/mr-worker)
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `SocketAddr`, `client::Client`, `sync::Arc`, `transport::Transport`
[INFO] [stdout]  --> mr-worker/src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     srpc::{client::Client, transport::Transport},
[INFO] [stdout]   |            ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 3 |     std::{
[INFO] [stdout] 4 |         net::{IpAddr, Ipv4Addr, SocketAddr},
[INFO] [stdout]   |               ^^^^^^  ^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 5 |         sync::Arc,
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 1.99s
[INFO] running `Command { std: "docker" "inspect" "8252b854bd759680df5150dc7759690a8355fb2f733a0b1111fd3310281e1f76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8252b854bd759680df5150dc7759690a8355fb2f733a0b1111fd3310281e1f76", kill_on_drop: false }`
[INFO] [stdout] 8252b854bd759680df5150dc7759690a8355fb2f733a0b1111fd3310281e1f76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d1c39f2a78fa20b3a63c4c6eb39a54b4fb2a43f12879d86251b0a923e77da4db
[INFO] running `Command { std: "docker" "start" "-a" "d1c39f2a78fa20b3a63c4c6eb39a54b4fb2a43f12879d86251b0a923e77da4db", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `IpAddr`, `Ipv4Addr`, `SocketAddr`, `client::Client`, `sync::Arc`, `transport::Transport`
[INFO] [stderr]  --> mr-worker/src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 |     srpc::{client::Client, transport::Transport},
[INFO] [stderr]   |            ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 3 |     std::{
[INFO] [stderr] 4 |         net::{IpAddr, Ipv4Addr, SocketAddr},
[INFO] [stderr]   |               ^^^^^^  ^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 5 |         sync::Arc,
[INFO] [stderr]   |         ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mr-worker` (bin "mr-worker" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mr_common-c00e0deb0d8663c0)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mr_master-4b715b47afc4be24)
[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]      Running unittests (/opt/rustwide/target/debug/deps/mr_master-501cb0a242cb9195)
[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] [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]      Running unittests (/opt/rustwide/target/debug/deps/mr_sequential-82f0f1f1124828cf)
[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]      Running unittests (/opt/rustwide/target/debug/deps/mr_worker-7e4363b582d5d619)
[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]      Running unittests (/opt/rustwide/target/debug/deps/mr_worker-6e74570faecb6cb5)
[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 mr-common
[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 mr-master
[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 mr-worker
[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] running `Command { std: "docker" "inspect" "d1c39f2a78fa20b3a63c4c6eb39a54b4fb2a43f12879d86251b0a923e77da4db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1c39f2a78fa20b3a63c4c6eb39a54b4fb2a43f12879d86251b0a923e77da4db", kill_on_drop: false }`
[INFO] [stdout] d1c39f2a78fa20b3a63c4c6eb39a54b4fb2a43f12879d86251b0a923e77da4db