[INFO] fetching crate floyd-warshall-alg 0.1.3...
[INFO] testing floyd-warshall-alg-0.1.3 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] extracting crate floyd-warshall-alg 0.1.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate floyd-warshall-alg 0.1.3 on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0dc17b0d775b103470dfd26f5d2fe15f76a3fc4c199fed559dedd9c6f84f94e1
[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" "0dc17b0d775b103470dfd26f5d2fe15f76a3fc4c199fed559dedd9c6f84f94e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0dc17b0d775b103470dfd26f5d2fe15f76a3fc4c199fed559dedd9c6f84f94e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dc17b0d775b103470dfd26f5d2fe15f76a3fc4c199fed559dedd9c6f84f94e1", kill_on_drop: false }`
[INFO] [stdout] 0dc17b0d775b103470dfd26f5d2fe15f76a3fc4c199fed559dedd9c6f84f94e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1110b5d85e2546c859ccf33d553dc1c67712f5cfd6d969e79f411891371a36e8
[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" "1110b5d85e2546c859ccf33d553dc1c67712f5cfd6d969e79f411891371a36e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.00s
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1110b5d85e2546c859ccf33d553dc1c67712f5cfd6d969e79f411891371a36e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1110b5d85e2546c859ccf33d553dc1c67712f5cfd6d969e79f411891371a36e8", kill_on_drop: false }`
[INFO] [stdout] 1110b5d85e2546c859ccf33d553dc1c67712f5cfd6d969e79f411891371a36e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44f4420c1cebdab928a1029624e285549c4a4c7858ab013850b20a17f8991fb1
[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" "44f4420c1cebdab928a1029624e285549c4a4c7858ab013850b20a17f8991fb1", 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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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 1.87s
[INFO] running `Command { std: "docker" "inspect" "44f4420c1cebdab928a1029624e285549c4a4c7858ab013850b20a17f8991fb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44f4420c1cebdab928a1029624e285549c4a4c7858ab013850b20a17f8991fb1", kill_on_drop: false }`
[INFO] [stdout] 44f4420c1cebdab928a1029624e285549c4a4c7858ab013850b20a17f8991fb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 47eea33aff9f425b0bd62bc778331f43e65ddb075975c3a65d96a01ca9638bff
[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" "47eea33aff9f425b0bd62bc778331f43e65ddb075975c3a65d96a01ca9638bff", kill_on_drop: false }`
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/floyd_warshall_alg-3bd120da39f994e0)
[INFO] [stdout] running 7 tests
[INFO] [stderr]    Doc-tests floyd-warshall-alg
[INFO] [stdout] test floyd_warshall::tests::new ... ok
[INFO] [stdout] test floyd_warshall::tests::new_customized ... ok
[INFO] [stdout] test floyd_warshall::tests::new_fully_customized ... ok
[INFO] [stdout] test result::tests::collect_path_nodes ... ok
[INFO] [stdout] test floyd_warshall::tests::find_paths ... ok
[INFO] [stdout] test result::tests::new ... ok
[INFO] [stdout] test result::tests::get_path_rate ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/floyd_warshall.rs - floyd_warshall::FloydWarshall<F>::new (line 54) ... 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::cmp (line 30) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.44s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "47eea33aff9f425b0bd62bc778331f43e65ddb075975c3a65d96a01ca9638bff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47eea33aff9f425b0bd62bc778331f43e65ddb075975c3a65d96a01ca9638bff", kill_on_drop: false }`
[INFO] [stdout] 47eea33aff9f425b0bd62bc778331f43e65ddb075975c3a65d96a01ca9638bff