[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 try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faeryz%2Fmit-6.824-labs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aeryz/mit-6.824-labs 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 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-2/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" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/aeryz/srpc`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.118
[INFO] [stderr]   Downloaded rand v0.8.1
[INFO] [stderr]   Downloaded smallvec v1.6.0
[INFO] [stderr]   Downloaded serde v1.0.118
[INFO] [stderr]   Downloaded syn v1.0.57
[INFO] [stderr]   Downloaded tokio v0.3.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e7c2313bee0e44130a27d8b817c507bed7ce8f623feb4b978661098733157f81
[INFO] running `Command { std: "docker" "start" "-a" "e7c2313bee0e44130a27d8b817c507bed7ce8f623feb4b978661098733157f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7c2313bee0e44130a27d8b817c507bed7ce8f623feb4b978661098733157f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7c2313bee0e44130a27d8b817c507bed7ce8f623feb4b978661098733157f81", kill_on_drop: false }`
[INFO] [stdout] e7c2313bee0e44130a27d8b817c507bed7ce8f623feb4b978661098733157f81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6c194267f2b06cf081c9746e1f8c222376f385558bda1327b6d61c5c161c19a6
[INFO] running `Command { std: "docker" "start" "-a" "6c194267f2b06cf081c9746e1f8c222376f385558bda1327b6d61c5c161c19a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling futures-sink v0.3.8
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling smallvec v1.6.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling mr-sequential v0.1.0 (/opt/rustwide/workdir/mr-sequential)
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.2
[INFO] [stderr]    Compiling mio v0.7.7
[INFO] [stderr]    Compiling rand_core v0.6.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling tokio v0.3.6
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rand v0.8.1
[INFO] [stderr]    Compiling quote v1.0.8
[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-worker v0.1.0 (/opt/rustwide/workdir/mr-worker)
[INFO] [stderr]    Compiling mr-master v0.1.0 (/opt/rustwide/workdir/mr-master)
[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 1m 10s
[INFO] running `Command { std: "docker" "inspect" "6c194267f2b06cf081c9746e1f8c222376f385558bda1327b6d61c5c161c19a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c194267f2b06cf081c9746e1f8c222376f385558bda1327b6d61c5c161c19a6", kill_on_drop: false }`
[INFO] [stdout] 6c194267f2b06cf081c9746e1f8c222376f385558bda1327b6d61c5c161c19a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f5c36c185893564f9a379c4ddab42d9c1885bdb2cf61375838f4a787d5ff1408
[INFO] running `Command { std: "docker" "start" "-a" "f5c36c185893564f9a379c4ddab42d9c1885bdb2cf61375838f4a787d5ff1408", 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-worker v0.1.0 (/opt/rustwide/workdir/mr-worker)
[INFO] [stderr]    Compiling mr-master v0.1.0 (/opt/rustwide/workdir/mr-master)
[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 5.24s
[INFO] running `Command { std: "docker" "inspect" "f5c36c185893564f9a379c4ddab42d9c1885bdb2cf61375838f4a787d5ff1408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5c36c185893564f9a379c4ddab42d9c1885bdb2cf61375838f4a787d5ff1408", kill_on_drop: false }`
[INFO] [stdout] f5c36c185893564f9a379c4ddab42d9c1885bdb2cf61375838f4a787d5ff1408
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] e3aa537cdf67bab56ac0f49c23c3d9e34e78a564f70ac5b50009c016787f061b
[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" "e3aa537cdf67bab56ac0f49c23c3d9e34e78a564f70ac5b50009c016787f061b", 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 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mr_common-7c5e961eb4f10977)
[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-624053cba3dc15b3)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mr_master-23c4eea55636b8c8)
[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-7d9bea3e551de56a)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mr_worker-72d92d5176c46648)
[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-bad9bfc105824277)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mr-common
[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] [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" "e3aa537cdf67bab56ac0f49c23c3d9e34e78a564f70ac5b50009c016787f061b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3aa537cdf67bab56ac0f49c23c3d9e34e78a564f70ac5b50009c016787f061b", kill_on_drop: false }`
[INFO] [stdout] e3aa537cdf67bab56ac0f49c23c3d9e34e78a564f70ac5b50009c016787f061b