[INFO] fetching crate floyd-warshall-alg 0.1.3...
[INFO] testing floyd-warshall-alg-0.1.3 against 1.49.0 for beta-1.50-1
[INFO] extracting crate floyd-warshall-alg 0.1.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate floyd-warshall-alg 0.1.3 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 crates.io crate floyd-warshall-alg 0.1.3
[INFO] finished tweaking crates.io crate floyd-warshall-alg 0.1.3
[INFO] tweaked toml for crates.io crate floyd-warshall-alg 0.1.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 523172fdd46a99499aa27e1c47e9f6211a4ca810689c9669d5349662f0ad8571
[INFO] running `Command { std: "docker" "start" "-a" "523172fdd46a99499aa27e1c47e9f6211a4ca810689c9669d5349662f0ad8571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "523172fdd46a99499aa27e1c47e9f6211a4ca810689c9669d5349662f0ad8571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "523172fdd46a99499aa27e1c47e9f6211a4ca810689c9669d5349662f0ad8571", kill_on_drop: false }`
[INFO] [stdout] 523172fdd46a99499aa27e1c47e9f6211a4ca810689c9669d5349662f0ad8571
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 6f5fbd38fc1d42053e5414a857ef230494913580b4c448f8e3b2dac08005a26a
[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" "6f5fbd38fc1d42053e5414a857ef230494913580b4c448f8e3b2dac08005a26a", kill_on_drop: false }`
[INFO] [stderr]    Compiling safe-graph v0.1.6
[INFO] [stderr]    Compiling floyd-warshall-alg v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/floyd_warshall.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |     op: Box<Fn(F, F) -> F>,
[INFO] [stdout]    |             ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/floyd_warshall.rs:44:14
[INFO] [stdout]    |
[INFO] [stdout] 44 |     cmp: Box<Fn(F, F) -> bool>,
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/floyd_warshall.rs:88:35
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn new_customized(op: Box<Fn(F, F) -> F>, cmp: Box<Fn(F, F) -> bool>) -> Self {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/floyd_warshall.rs:88:60
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn new_customized(op: Box<Fn(F, F) -> F>, cmp: Box<Fn(F, F) -> bool>) -> Self {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/floyd_warshall.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 |         op: Box<Fn(F, F) -> F>,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/floyd_warshall.rs:113:18
[INFO] [stdout]     |
[INFO] [stdout] 113 |         cmp: Box<Fn(F, F) -> bool>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `next` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/floyd_warshall.rs:180:29
[INFO] [stdout]     |
[INFO] [stdout] 179 | ...                   let direction = next.edge_weight(i, k).unwrap();
[INFO] [stdout]     |                                       ---- immutable borrow occurs here
[INFO] [stdout] 180 | ...                   next.add_edge(i, j, *direction);
[INFO] [stdout]     |                       ^^^^                ---------- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `next` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/floyd_warshall.rs:188:25
[INFO] [stdout]     |
[INFO] [stdout] 187 |                         let direction = next.edge_weight(i, k).unwrap();
[INFO] [stdout]     |                                         ---- immutable borrow occurs here
[INFO] [stdout] 188 |                         next.add_edge(i, j, *direction);
[INFO] [stdout]     |                         ^^^^                ---------- immutable borrow later used here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "6f5fbd38fc1d42053e5414a857ef230494913580b4c448f8e3b2dac08005a26a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f5fbd38fc1d42053e5414a857ef230494913580b4c448f8e3b2dac08005a26a", kill_on_drop: false }`
[INFO] [stdout] 6f5fbd38fc1d42053e5414a857ef230494913580b4c448f8e3b2dac08005a26a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9a27e3acb4a618f1773170ff6efcb03555a2b7c32e27b9b3b322482b8af72d7b
[INFO] running `Command { std: "docker" "start" "-a" "9a27e3acb4a618f1773170ff6efcb03555a2b7c32e27b9b3b322482b8af72d7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling floyd-warshall-alg v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/floyd_warshall.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |     op: Box<Fn(F, F) -> F>,
[INFO] [stdout]    |             ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/floyd_warshall.rs:44:14
[INFO] [stdout]    |
[INFO] [stdout] 44 |     cmp: Box<Fn(F, F) -> bool>,
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/floyd_warshall.rs:88:35
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn new_customized(op: Box<Fn(F, F) -> F>, cmp: Box<Fn(F, F) -> bool>) -> Self {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/floyd_warshall.rs:88:60
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn new_customized(op: Box<Fn(F, F) -> F>, cmp: Box<Fn(F, F) -> bool>) -> Self {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/floyd_warshall.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 |         op: Box<Fn(F, F) -> F>,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/floyd_warshall.rs:113:18
[INFO] [stdout]     |
[INFO] [stdout] 113 |         cmp: Box<Fn(F, F) -> bool>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `next` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/floyd_warshall.rs:180:29
[INFO] [stdout]     |
[INFO] [stdout] 179 | ...                   let direction = next.edge_weight(i, k).unwrap();
[INFO] [stdout]     |                                       ---- immutable borrow occurs here
[INFO] [stdout] 180 | ...                   next.add_edge(i, j, *direction);
[INFO] [stdout]     |                       ^^^^                ---------- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `next` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/floyd_warshall.rs:188:25
[INFO] [stdout]     |
[INFO] [stdout] 187 |                         let direction = next.edge_weight(i, k).unwrap();
[INFO] [stdout]     |                                         ---- immutable borrow occurs here
[INFO] [stdout] 188 |                         next.add_edge(i, j, *direction);
[INFO] [stdout]     |                         ^^^^                ---------- immutable borrow later used here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/floyd_warshall.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |     op: Box<Fn(F, F) -> F>,
[INFO] [stdout]    |             ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/floyd_warshall.rs:44:14
[INFO] [stdout]    |
[INFO] [stdout] 44 |     cmp: Box<Fn(F, F) -> bool>,
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/floyd_warshall.rs:88:35
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn new_customized(op: Box<Fn(F, F) -> F>, cmp: Box<Fn(F, F) -> bool>) -> Self {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/floyd_warshall.rs:88:60
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn new_customized(op: Box<Fn(F, F) -> F>, cmp: Box<Fn(F, F) -> bool>) -> Self {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/floyd_warshall.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 |         op: Box<Fn(F, F) -> F>,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/floyd_warshall.rs:113:18
[INFO] [stdout]     |
[INFO] [stdout] 113 |         cmp: Box<Fn(F, F) -> bool>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `next` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/floyd_warshall.rs:180:29
[INFO] [stdout]     |
[INFO] [stdout] 179 | ...                   let direction = next.edge_weight(i, k).unwrap();
[INFO] [stdout]     |                                       ---- immutable borrow occurs here
[INFO] [stdout] 180 | ...                   next.add_edge(i, j, *direction);
[INFO] [stdout]     |                       ^^^^                ---------- immutable borrow later used here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `next` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/floyd_warshall.rs:188:25
[INFO] [stdout]     |
[INFO] [stdout] 187 |                         let direction = next.edge_weight(i, k).unwrap();
[INFO] [stdout]     |                                         ---- immutable borrow occurs here
[INFO] [stdout] 188 |                         next.add_edge(i, j, *direction);
[INFO] [stdout]     |                         ^^^^                ---------- immutable borrow later used here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.89s
[INFO] running `Command { std: "docker" "inspect" "9a27e3acb4a618f1773170ff6efcb03555a2b7c32e27b9b3b322482b8af72d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a27e3acb4a618f1773170ff6efcb03555a2b7c32e27b9b3b322482b8af72d7b", kill_on_drop: false }`
[INFO] [stdout] 9a27e3acb4a618f1773170ff6efcb03555a2b7c32e27b9b3b322482b8af72d7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] cd89d905948a47f4e35c3abfab22cda0bc7ea32ac56e3fb711b86eba991733cf
[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" "cd89d905948a47f4e35c3abfab22cda0bc7ea32ac56e3fb711b86eba991733cf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/floyd_warshall.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |     op: Box<Fn(F, F) -> F>,
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/floyd_warshall.rs:44:14
[INFO] [stderr]    |
[INFO] [stderr] 44 |     cmp: Box<Fn(F, F) -> bool>,
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/floyd_warshall.rs:88:35
[INFO] [stderr]    |
[INFO] [stderr] 88 |     pub fn new_customized(op: Box<Fn(F, F) -> F>, cmp: Box<Fn(F, F) -> bool>) -> Self {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/floyd_warshall.rs:88:60
[INFO] [stderr]    |
[INFO] [stderr] 88 |     pub fn new_customized(op: Box<Fn(F, F) -> F>, cmp: Box<Fn(F, F) -> bool>) -> Self {
[INFO] [stderr]    |                                                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/floyd_warshall.rs:112:17
[INFO] [stderr]     |
[INFO] [stderr] 112 |         op: Box<Fn(F, F) -> F>,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/floyd_warshall.rs:113:18
[INFO] [stderr]     |
[INFO] [stderr] 113 |         cmp: Box<Fn(F, F) -> bool>,
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `next` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/floyd_warshall.rs:180:29
[INFO] [stderr]     |
[INFO] [stderr] 179 | ...                   let direction = next.edge_weight(i, k).unwrap();
[INFO] [stderr]     |                                       ---- immutable borrow occurs here
[INFO] [stderr] 180 | ...                   next.add_edge(i, j, *direction);
[INFO] [stderr]     |                       ^^^^                ---------- immutable borrow later used here
[INFO] [stderr]     |                       |
[INFO] [stderr]     |                       mutable borrow occurs here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `next` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/floyd_warshall.rs:188:25
[INFO] [stderr]     |
[INFO] [stderr] 187 |                         let direction = next.edge_weight(i, k).unwrap();
[INFO] [stderr]     |                                         ---- immutable borrow occurs here
[INFO] [stderr] 188 |                         next.add_edge(i, j, *direction);
[INFO] [stderr]     |                         ^^^^                ---------- immutable borrow later used here
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         mutable borrow occurs here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/floyd_warshall.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |     op: Box<Fn(F, F) -> F>,
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/floyd_warshall.rs:44:14
[INFO] [stderr]    |
[INFO] [stderr] 44 |     cmp: Box<Fn(F, F) -> bool>,
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/floyd_warshall.rs:88:35
[INFO] [stderr]    |
[INFO] [stderr] 88 |     pub fn new_customized(op: Box<Fn(F, F) -> F>, cmp: Box<Fn(F, F) -> bool>) -> Self {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/floyd_warshall.rs:88:60
[INFO] [stderr]    |
[INFO] [stderr] 88 |     pub fn new_customized(op: Box<Fn(F, F) -> F>, cmp: Box<Fn(F, F) -> bool>) -> Self {
[INFO] [stderr]    |                                                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/floyd_warshall.rs:112:17
[INFO] [stderr]     |
[INFO] [stderr] 112 |         op: Box<Fn(F, F) -> F>,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> F`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/floyd_warshall.rs:113:18
[INFO] [stderr]     |
[INFO] [stderr] 113 |         cmp: Box<Fn(F, F) -> bool>,
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(F, F) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `next` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/floyd_warshall.rs:180:29
[INFO] [stderr]     |
[INFO] [stderr] 179 | ...                   let direction = next.edge_weight(i, k).unwrap();
[INFO] [stderr]     |                                       ---- immutable borrow occurs here
[INFO] [stderr] 180 | ...                   next.add_edge(i, j, *direction);
[INFO] [stderr]     |                       ^^^^                ---------- immutable borrow later used here
[INFO] [stderr]     |                       |
[INFO] [stderr]     |                       mutable borrow occurs here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `next` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/floyd_warshall.rs:188:25
[INFO] [stderr]     |
[INFO] [stderr] 187 |                         let direction = next.edge_weight(i, k).unwrap();
[INFO] [stderr]     |                                         ---- immutable borrow occurs here
[INFO] [stderr] 188 |                         next.add_edge(i, j, *direction);
[INFO] [stderr]     |                         ^^^^                ---------- immutable borrow later used here
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         mutable borrow occurs here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/floyd_warshall_alg-8fab1b0d34ad62ed
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test floyd_warshall::tests::new_fully_customized ... ok
[INFO] [stdout] test result::tests::new ... ok
[INFO] [stdout] test result::tests::collect_path_nodes ... ok
[INFO] [stdout] test result::tests::get_path_rate ... ok
[INFO] [stdout] test floyd_warshall::tests::new ... ok
[INFO] [stdout] test floyd_warshall::tests::find_paths ... ok
[INFO] [stdout] test floyd_warshall::tests::new_customized ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests floyd-warshall-alg
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/floyd_warshall.rs - floyd_warshall::FloydWarshall::cmp (line 30) ... ok
[INFO] [stdout] test src/floyd_warshall.rs - floyd_warshall::FloydWarshall<F>::new_customized (line 79) ... ok
[INFO] [stdout] test src/floyd_warshall.rs - floyd_warshall::FloydWarshall<F>::new_fully_customized (line 102) ... ok
[INFO] [stdout] test src/floyd_warshall.rs - floyd_warshall::FloydWarshall<F>::new (line 54) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cd89d905948a47f4e35c3abfab22cda0bc7ea32ac56e3fb711b86eba991733cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd89d905948a47f4e35c3abfab22cda0bc7ea32ac56e3fb711b86eba991733cf", kill_on_drop: false }`
[INFO] [stdout] cd89d905948a47f4e35c3abfab22cda0bc7ea32ac56e3fb711b86eba991733cf