[INFO] cloning repository https://github.com/remexre/stahlnet-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/remexre/stahlnet-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremexre%2Fstahlnet-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremexre%2Fstahlnet-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2a33d0a80a1fac781c221c26a74477784a9d2996
[INFO] testing remexre/stahlnet-rs against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremexre%2Fstahlnet-rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/remexre/stahlnet-rs
[INFO] finished tweaking git repo https://github.com/remexre/stahlnet-rs
[INFO] tweaked toml for git repo https://github.com/remexre/stahlnet-rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/remexre/stahlnet-rs on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/remexre/stahlnet-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 919520a3511f51b72379ff1bcc5e2903970b57c2708dd5ced0930f2a3e7da484
[INFO] running `Command { std: "docker" "start" "-a" "919520a3511f51b72379ff1bcc5e2903970b57c2708dd5ced0930f2a3e7da484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "919520a3511f51b72379ff1bcc5e2903970b57c2708dd5ced0930f2a3e7da484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "919520a3511f51b72379ff1bcc5e2903970b57c2708dd5ced0930f2a3e7da484", kill_on_drop: false }`
[INFO] [stdout] 919520a3511f51b72379ff1bcc5e2903970b57c2708dd5ced0930f2a3e7da484
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e01437b9114c546d9b5f6af4455d3f8b257ee9c13a9dee6928f46c8cc69e4549
[INFO] running `Command { std: "docker" "start" "-a" "e01437b9114c546d9b5f6af4455d3f8b257ee9c13a9dee6928f46c8cc69e4549", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling futures v0.1.27
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling smallvec v0.6.10
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling owning_ref v0.4.0
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling syn v0.15.36
[INFO] [stderr]    Compiling regex v1.1.7
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling regex-syntax v0.6.7
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling tokio-trace-core v0.2.0
[INFO] [stderr]    Compiling antidote v1.0.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling aho-corasick v0.7.3
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling tokio-executor v0.1.7
[INFO] [stderr]    Compiling tokio-sync v0.1.6
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling tokio-current-thread v0.1.6
[INFO] [stderr]    Compiling tokio-timer v0.2.11
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling tokio-threadpool v0.1.14
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling tokio v0.1.21
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]    Compiling libremexre v0.1.12
[INFO] [stderr]    Compiling stahlnet v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `const_err` has been removed: converted into hard error, see issue #71800 <https://github.com/rust-lang/rust/issues/71800> for more information
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     const_err,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `legacy_directory_ownership` has been removed: converted into hard error, see issue #37872 <https://github.com/rust-lang/rust/issues/37872> for more information
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     legacy_directory_ownership,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `plugin_as_library` has been removed: plugins have been deprecated and retired
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     plugin_as_library,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `private_in_public` has been removed: replaced with another group of lints, see RFC <https://rust-lang.github.io/rfcs/2145-type-privacy.html> for more information
[INFO] [stdout]   --> src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     private_in_public,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `safe_extern_statics` has been removed: converted into hard error, see issue #36247 <https://github.com/rust-lang/rust/issues/36247> for more information
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     safe_extern_statics,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     unions_with_drop_fields,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/server.rs:133:17
[INFO] [stdout]     |
[INFO] [stdout] 133 |                 drop(self.peers.remove(&peer));
[INFO] [stdout]     |                 ^^^^^------------------------^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      argument has type `bool`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 133 -                 drop(self.peers.remove(&peer));
[INFO] [stdout] 133 +                 let _ = self.peers.remove(&peer);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/server.rs:143:21
[INFO] [stdout]     |
[INFO] [stdout] 143 |                     drop(self.routes.insert(task, (hops, peer)));
[INFO] [stdout]     |                     ^^^^^--------------------------------------^
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          argument has type `Option<(u64, std::net::SocketAddr)>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 143 -                     drop(self.routes.insert(task, (hops, peer)));
[INFO] [stdout] 143 +                     let _ = self.routes.insert(task, (hops, peer));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.57s
[INFO] running `Command { std: "docker" "inspect" "e01437b9114c546d9b5f6af4455d3f8b257ee9c13a9dee6928f46c8cc69e4549", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e01437b9114c546d9b5f6af4455d3f8b257ee9c13a9dee6928f46c8cc69e4549", kill_on_drop: false }`
[INFO] [stdout] e01437b9114c546d9b5f6af4455d3f8b257ee9c13a9dee6928f46c8cc69e4549
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4599e8f7c59d95ea4e69c8d0cc3950312dab31c5efee46cc51333d4acfbda83e
[INFO] running `Command { std: "docker" "start" "-a" "4599e8f7c59d95ea4e69c8d0cc3950312dab31c5efee46cc51333d4acfbda83e", kill_on_drop: false }`
[INFO] [stderr]    Compiling pretty_assertions v0.6.1
[INFO] [stdout] warning: lint `const_err` has been removed: converted into hard error, see issue #71800 <https://github.com/rust-lang/rust/issues/71800> for more information
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     const_err,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `legacy_directory_ownership` has been removed: converted into hard error, see issue #37872 <https://github.com/rust-lang/rust/issues/37872> for more information
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     legacy_directory_ownership,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `plugin_as_library` has been removed: plugins have been deprecated and retired
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     plugin_as_library,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `private_in_public` has been removed: replaced with another group of lints, see RFC <https://rust-lang.github.io/rfcs/2145-type-privacy.html> for more information
[INFO] [stdout]   --> src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     private_in_public,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `safe_extern_statics` has been removed: converted into hard error, see issue #36247 <https://github.com/rust-lang/rust/issues/36247> for more information
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     safe_extern_statics,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     unions_with_drop_fields,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/server.rs:133:17
[INFO] [stdout]     |
[INFO] [stdout] 133 |                 drop(self.peers.remove(&peer));
[INFO] [stdout]     |                 ^^^^^------------------------^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      argument has type `bool`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 133 -                 drop(self.peers.remove(&peer));
[INFO] [stdout] 133 +                 let _ = self.peers.remove(&peer);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/server.rs:143:21
[INFO] [stdout]     |
[INFO] [stdout] 143 |                     drop(self.routes.insert(task, (hops, peer)));
[INFO] [stdout]     |                     ^^^^^--------------------------------------^
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          argument has type `Option<(u64, std::net::SocketAddr)>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 143 -                     drop(self.routes.insert(task, (hops, peer)));
[INFO] [stdout] 143 +                     let _ = self.routes.insert(task, (hops, peer));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling stahlnet v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `const_err` has been removed: converted into hard error, see issue #71800 <https://github.com/rust-lang/rust/issues/71800> for more information
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     const_err,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `legacy_directory_ownership` has been removed: converted into hard error, see issue #37872 <https://github.com/rust-lang/rust/issues/37872> for more information
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     legacy_directory_ownership,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `plugin_as_library` has been removed: plugins have been deprecated and retired
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     plugin_as_library,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `private_in_public` has been removed: replaced with another group of lints, see RFC <https://rust-lang.github.io/rfcs/2145-type-privacy.html> for more information
[INFO] [stdout]   --> src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     private_in_public,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `safe_extern_statics` has been removed: converted into hard error, see issue #36247 <https://github.com/rust-lang/rust/issues/36247> for more information
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     safe_extern_statics,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     unions_with_drop_fields,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/server.rs:133:17
[INFO] [stdout]     |
[INFO] [stdout] 133 |                 drop(self.peers.remove(&peer));
[INFO] [stdout]     |                 ^^^^^------------------------^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      argument has type `bool`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 133 -                 drop(self.peers.remove(&peer));
[INFO] [stdout] 133 +                 let _ = self.peers.remove(&peer);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> src/server.rs:143:21
[INFO] [stdout]     |
[INFO] [stdout] 143 |                     drop(self.routes.insert(task, (hops, peer)));
[INFO] [stdout]     |                     ^^^^^--------------------------------------^
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          argument has type `Option<(u64, std::net::SocketAddr)>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 143 -                     drop(self.routes.insert(task, (hops, peer)));
[INFO] [stdout] 143 +                     let _ = self.routes.insert(task, (hops, peer));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "4599e8f7c59d95ea4e69c8d0cc3950312dab31c5efee46cc51333d4acfbda83e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4599e8f7c59d95ea4e69c8d0cc3950312dab31c5efee46cc51333d4acfbda83e", kill_on_drop: false }`
[INFO] [stdout] 4599e8f7c59d95ea4e69c8d0cc3950312dab31c5efee46cc51333d4acfbda83e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0d944780d605aee8290c7ea1fafced6d1fa38b19d14987896e923c062cb0ff5a
[INFO] running `Command { std: "docker" "start" "-a" "0d944780d605aee8290c7ea1fafced6d1fa38b19d14987896e923c062cb0ff5a", kill_on_drop: false }`
[INFO] [stderr] warning: lint `const_err` has been removed: converted into hard error, see issue #71800 <https://github.com/rust-lang/rust/issues/71800> for more information
[INFO] [stderr]  --> src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     const_err,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: lint `legacy_directory_ownership` has been removed: converted into hard error, see issue #37872 <https://github.com/rust-lang/rust/issues/37872> for more information
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     legacy_directory_ownership,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: lint `plugin_as_library` has been removed: plugins have been deprecated and retired
[INFO] [stderr]   --> src/lib.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     plugin_as_library,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: lint `private_in_public` has been removed: replaced with another group of lints, see RFC <https://rust-lang.github.io/rfcs/2145-type-privacy.html> for more information
[INFO] [stderr]   --> src/lib.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     private_in_public,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: lint `safe_extern_statics` has been removed: converted into hard error, see issue #36247 <https://github.com/rust-lang/rust/issues/36247> for more information
[INFO] [stderr]   --> src/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     safe_extern_statics,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stderr]   --> src/lib.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     unions_with_drop_fields,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stderr]    --> src/server.rs:133:17
[INFO] [stderr]     |
[INFO] [stderr] 133 |                 drop(self.peers.remove(&peer));
[INFO] [stderr]     |                 ^^^^^------------------------^
[INFO] [stderr]     |                      |
[INFO] [stderr]     |                      argument has type `bool`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 133 -                 drop(self.peers.remove(&peer));
[INFO] [stderr] 133 +                 let _ = self.peers.remove(&peer);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stderr]    --> src/server.rs:143:21
[INFO] [stderr]     |
[INFO] [stderr] 143 |                     drop(self.routes.insert(task, (hops, peer)));
[INFO] [stderr]     |                     ^^^^^--------------------------------------^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          argument has type `Option<(u64, std::net::SocketAddr)>`
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 143 -                     drop(self.routes.insert(task, (hops, peer)));
[INFO] [stderr] 143 +                     let _ = self.routes.insert(task, (hops, peer));
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `stahlnet` (lib) generated 8 warnings
[INFO] [stderr] warning: `stahlnet` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stahlnet-dc2c8b8660d6400d)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stderr] 
[INFO] [stderr] thread 'tokio-runtime-worker-0' (29) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/arrayvec-0.4.10/src/lib.rs:243:25:
[INFO] [stderr] unsafe precondition(s) violated: slice::get_unchecked_mut requires that the index is within the slice
[INFO] [stderr] 
[INFO] [stderr] This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety.
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x5d8f2444d9b2 - std::backtrace_rs::backtrace::libunwind::trace::h16affffe904e891e
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]    1:     0x5d8f2444d9b2 - std::backtrace_rs::backtrace::trace_unsynchronized::h5c14b13373ed4150
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]    2:     0x5d8f2444d9b2 - std::sys::backtrace::_print_fmt::hcbb507f162c816cc
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]    3:     0x5d8f2444d9b2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h8be9aa933f14675f
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]    4:     0x5d8f2445de3f - core::fmt::rt::Argument::fmt::h30ed739d33467c3a
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]    5:     0x5d8f2445de3f - core::fmt::write::hfd0efbb002ac7eea
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/mod.rs:1469:25
[INFO] [stderr]    6:     0x5d8f2441ac63 - std::io::default_write_fmt::hf7668c9f69c3a921
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:639:11
[INFO] [stderr]    7:     0x5d8f2441ac63 - std::io::Write::write_fmt::ha6503cd07dd1d506
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]    8:     0x5d8f24427012 - std::sys::backtrace::BacktraceLock::print::hf2554f6030d393f7
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]    9:     0x5d8f2442bbaf - std::panicking::default_hook::{{closure}}::h8873121c56335b01
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:301:27
[INFO] [stderr]   10:     0x5d8f2442ba09 - std::panicking::default_hook::hbafefc2d196267a2
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:328:9
[INFO] [stderr]   11:     0x5d8f2431ca2e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha834d5846f91b30b
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stderr]   12:     0x5d8f2431ca2e - test::test_main_with_exit_callback::{{closure}}::h63c167737eecb025
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:145:21
[INFO] [stderr]   13:     0x5d8f2442c1bf - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbf9b0f7a281291fd
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stderr]   14:     0x5d8f2442c1bf - std::panicking::panic_with_hook::h9f5b09d5adc1a745
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:842:13
[INFO] [stderr]   15:     0x5d8f2442bfe6 - std::panicking::panic_handler::{{closure}}::h08111e483bdf6a89
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:700:13
[INFO] [stderr]   16:     0x5d8f24427149 - std::sys::backtrace::__rust_end_short_backtrace::h1b86e3414ecbbe8d
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]   17:     0x5d8f2440f2fd - __rustc[b292c645e8102103]::rust_begin_unwind
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:698:5
[INFO] [stderr]   18:     0x5d8f2446603d - core::panicking::panic_nounwind_fmt::runtime::hdc3e454f690461fc
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:122:22
[INFO] [stderr]   19:     0x5d8f2446603d - core::panicking::panic_nounwind_fmt::h0f491c26d5575477
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/intrinsics/mod.rs:2439:9
[INFO] [stderr]   20:     0x5d8f243e29bc - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked_mut::precondition_check::h2ffc7491d0cb3303
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ub_checks.rs:73:21
[INFO] [stderr]   21:     0x5d8f243e2909 - <usize as core::slice::index::SliceIndex<[T]>>::get_unchecked_mut::h75808346eef13ddd
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ub_checks.rs:78:17
[INFO] [stderr]   22:     0x5d8f243e0b29 - core::slice::<impl [T]>::get_unchecked_mut::h95b91d15969aba21
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/slice/mod.rs:689:30
[INFO] [stderr]   23:     0x5d8f243e2f01 - arrayvec::ArrayVec<A>::push_unchecked::h6e47c5e92842a054
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/arrayvec-0.4.10/src/lib.rs:243:25
[INFO] [stderr]   24:     0x5d8f243e35b8 - arrayvec::ArrayVec<A>::try_push::hc0931d9805c2be59
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/arrayvec-0.4.10/src/lib.rs:209:22
[INFO] [stderr]   25:     0x5d8f243dd8ed - crossbeam_epoch::internal::Bag::try_push::h8c77b50d50a08fc5
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/crossbeam-epoch-0.7.1/src/internal.rs:93:24
[INFO] [stderr]   26:     0x5d8f243ddd39 - crossbeam_epoch::internal::Local::defer::h294df710afa688ae
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/crossbeam-epoch-0.7.1/src/internal.rs:324:32
[INFO] [stderr]   27:     0x5d8f243dbca3 - crossbeam_epoch::guard::Guard::defer_unchecked::hc9e0dc58033596e1
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/crossbeam-epoch-0.7.1/src/guard.rs:195:19
[INFO] [stderr]   28:     0x5d8f243da5e8 - <crossbeam_epoch::sync::list::Iter<T,C> as core::iter::traits::iterator::Iterator>::next::ha57f1d28e5a5d507
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/crossbeam-epoch-0.7.1/src/sync/list.rs:260:40
[INFO] [stderr]   29:     0x5d8f243de676 - crossbeam_epoch::internal::Global::try_advance::h5a4d2c7932d2ebaf
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/crossbeam-epoch-0.7.1/src/internal.rs:210:22
[INFO] [stderr]   30:     0x5d8f243de932 - crossbeam_epoch::internal::Global::collect::h52763644288cda3e
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/crossbeam-epoch-0.7.1/src/internal.rs:175:33
[INFO] [stderr]   31:     0x5d8f243ddc56 - crossbeam_epoch::internal::Local::pin::hfef0a94b8c82f3f2
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/crossbeam-epoch-0.7.1/src/internal.rs:390:31
[INFO] [stderr]   32:     0x5d8f243de09f - crossbeam_epoch::internal::Local::finalize::hbd8801657eddce27
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/crossbeam-epoch-0.7.1/src/internal.rs:468:31
[INFO] [stderr]   33:     0x5d8f2438dfed - crossbeam_epoch::internal::Local::release_handle::h390905c92fb61f2d
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/crossbeam-epoch-0.7.1/src/internal.rs:452:18
[INFO] [stderr]   34:     0x5d8f243abbe2 - <crossbeam_epoch::collector::LocalHandle as core::ops::drop::Drop>::drop::h670e9d0678c3da0b
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/crossbeam-epoch-0.7.1/src/collector.rs:95:13
[INFO] [stderr]   35:     0x5d8f243a990a - core::ptr::drop_in_place<crossbeam_epoch::collector::LocalHandle>::h0768d2db1fe70dd6
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ptr/mod.rs:805:1
[INFO] [stderr]   36:     0x5d8f243ad2b9 - core::mem::maybe_uninit::MaybeUninit<T>::assume_init_drop::he8138e8ef0dc6766
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/mem/maybe_uninit.rs:809:18
[INFO] [stderr]   37:     0x5d8f243ad2b9 - std::sys::thread_local::native::lazy::destroy::{{closure}}::hbcc0cecdb03eb33d
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/thread_local/native/lazy.rs:121:45
[INFO] [stderr]   38:     0x5d8f243ac912 - std::sys::thread_local::abort_on_dtor_unwind::h12c60800ce03eb25
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/thread_local/mod.rs:210:5
[INFO] [stderr]   39:     0x5d8f243ad201 - std::sys::thread_local::native::lazy::destroy::h6862934ce9c9c8fa
[INFO] [stderr]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/thread_local/native/lazy.rs:114:5
[INFO] [stderr]   40:     0x70c58c0f672f - __call_tls_dtors
[INFO] [stderr]   41:     0x70c58c14b88b - <unknown>
[INFO] [stderr]   42:     0x70c58c1d8a64 - clone
[INFO] [stderr]   43:                0x0 - <unknown>
[INFO] [stderr] thread caused non-unwinding panic. aborting.
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/stahlnet-dc2c8b8660d6400d` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "0d944780d605aee8290c7ea1fafced6d1fa38b19d14987896e923c062cb0ff5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d944780d605aee8290c7ea1fafced6d1fa38b19d14987896e923c062cb0ff5a", kill_on_drop: false }`
[INFO] [stdout] 0d944780d605aee8290c7ea1fafced6d1fa38b19d14987896e923c062cb0ff5a
