[INFO] cloning repository https://github.com/azerowall/graphs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/azerowall/graphs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazerowall%2Fgraphs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazerowall%2Fgraphs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b13d519e2559f0f389db5e171fc16190087e940c
[INFO] testing azerowall/graphs against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazerowall%2Fgraphs" "/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/azerowall/graphs on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/azerowall/graphs
[INFO] finished tweaking git repo https://github.com/azerowall/graphs
[INFO] tweaked toml for git repo https://github.com/azerowall/graphs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/azerowall/graphs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c46f8209d378e92def8a246c7b026e17543620ee4a76fd351be6efd795b56f2
[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" "8c46f8209d378e92def8a246c7b026e17543620ee4a76fd351be6efd795b56f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c46f8209d378e92def8a246c7b026e17543620ee4a76fd351be6efd795b56f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c46f8209d378e92def8a246c7b026e17543620ee4a76fd351be6efd795b56f2", kill_on_drop: false }`
[INFO] [stdout] 8c46f8209d378e92def8a246c7b026e17543620ee4a76fd351be6efd795b56f2
[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=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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 390b04563ea243f8050d16267b28f37639c0ee6febe34cba08b99b712931bac2
[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" "390b04563ea243f8050d16267b28f37639c0ee6febe34cba08b99b712931bac2", kill_on_drop: false }`
[INFO] [stderr]    Compiling graphs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `MaybeUninit`
[INFO] [stdout]  --> src/matrix.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem::{MaybeUninit};
[INFO] [stdout]   |                ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_vec`
[INFO] [stdout]   --> src/matrix.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn from_vec(vec: Vec<T>, n_rows: usize, n_cols: usize) -> Self {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `Command { std: "docker" "inspect" "390b04563ea243f8050d16267b28f37639c0ee6febe34cba08b99b712931bac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "390b04563ea243f8050d16267b28f37639c0ee6febe34cba08b99b712931bac2", kill_on_drop: false }`
[INFO] [stdout] 390b04563ea243f8050d16267b28f37639c0ee6febe34cba08b99b712931bac2
[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=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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31f0f736bdb97341c4797eb8cf3dba4b0693c375734290ff58a959cf240829a6
[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" "31f0f736bdb97341c4797eb8cf3dba4b0693c375734290ff58a959cf240829a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling graphs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `MaybeUninit`
[INFO] [stdout]  --> src/matrix.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem::{MaybeUninit};
[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 1.29s
[INFO] running `Command { std: "docker" "inspect" "31f0f736bdb97341c4797eb8cf3dba4b0693c375734290ff58a959cf240829a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31f0f736bdb97341c4797eb8cf3dba4b0693c375734290ff58a959cf240829a6", kill_on_drop: false }`
[INFO] [stdout] 31f0f736bdb97341c4797eb8cf3dba4b0693c375734290ff58a959cf240829a6
[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=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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3c64033d0c178e917d71a44efe402793c325da0e8bf4d410a7d464cadf060e8d
[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" "3c64033d0c178e917d71a44efe402793c325da0e8bf4d410a7d464cadf060e8d", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `MaybeUninit`
[INFO] [stderr]  --> src/matrix.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::mem::{MaybeUninit};
[INFO] [stderr]   |                ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/graphs-999a38f8a467e97b
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test matrix::tests::test_mul_identity_1 ... ok
[INFO] [stdout] test matrix::tests::test_mul_identity_2 ... ok
[INFO] [stdout] test matrix::tests::test_mul_same ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3c64033d0c178e917d71a44efe402793c325da0e8bf4d410a7d464cadf060e8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c64033d0c178e917d71a44efe402793c325da0e8bf4d410a7d464cadf060e8d", kill_on_drop: false }`
[INFO] [stdout] 3c64033d0c178e917d71a44efe402793c325da0e8bf4d410a7d464cadf060e8d