[INFO] cloning repository https://github.com/Garmelon/cove
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Garmelon/cove" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGarmelon%2Fcove", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 10214f33695ad3eb8b87802d8d683cea5c618bf4
[INFO] checking Garmelon/cove against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGarmelon%2Fcove" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Garmelon/cove
[INFO] finished tweaking git repo https://github.com/Garmelon/cove
[INFO] tweaked toml for git repo https://github.com/Garmelon/cove written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Garmelon/cove on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: struct `GetOldestMsgId` is never constructed
[INFO] [stdout]    --> cove/src/vault/euph.rs:292:5
[INFO] [stdout]     |
[INFO] [stdout] 292 |     GetOldestMsgId : oldest_msg_id() -> Option<MessageId>;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `-W dead-code` implied by `-W unused`
[INFO] [stdout]     = help: to override `-W unused` add `#[allow(dead_code)]`
[INFO] [stdout]     = note: this warning originates in the macro `euph_room_vault_actions` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GetOldestUnseenMsgId` is never constructed
[INFO] [stdout]    --> cove/src/vault/euph.rs:296:5
[INFO] [stdout]     |
[INFO] [stdout] 296 |     GetOldestUnseenMsgId : oldest_unseen_msg_id() -> Option<MessageId>;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `euph_room_vault_actions` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `oldest_msg_id` and `oldest_unseen_msg_id` are never used
[INFO] [stdout]    --> cove/src/vault/euph.rs:292:22
[INFO] [stdout]     |
[INFO] [stdout] 262 |         impl EuphRoomVault {
[INFO] [stdout]     |         ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 292 |     GetOldestMsgId : oldest_msg_id() -> Option<MessageId>;
[INFO] [stdout]     |                      ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 296 |     GetOldestUnseenMsgId : oldest_unseen_msg_id() -> Option<MessageId>;
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `euph_room_vault_actions` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GetOldestMsgId` is never constructed
[INFO] [stdout]    --> cove/src/vault/euph.rs:292:5
[INFO] [stdout]     |
[INFO] [stdout] 292 |     GetOldestMsgId : oldest_msg_id() -> Option<MessageId>;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `-W dead-code` implied by `-W unused`
[INFO] [stdout]     = help: to override `-W unused` add `#[allow(dead_code)]`
[INFO] [stdout]     = note: this warning originates in the macro `euph_room_vault_actions` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GetOldestUnseenMsgId` is never constructed
[INFO] [stdout]    --> cove/src/vault/euph.rs:296:5
[INFO] [stdout]     |
[INFO] [stdout] 296 |     GetOldestUnseenMsgId : oldest_unseen_msg_id() -> Option<MessageId>;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `euph_room_vault_actions` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `oldest_msg_id` and `oldest_unseen_msg_id` are never used
[INFO] [stdout]    --> cove/src/vault/euph.rs:292:22
[INFO] [stdout]     |
[INFO] [stdout] 262 |         impl EuphRoomVault {
[INFO] [stdout]     |         ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 292 |     GetOldestMsgId : oldest_msg_id() -> Option<MessageId>;
[INFO] [stdout]     |                      ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 296 |     GetOldestUnseenMsgId : oldest_unseen_msg_id() -> Option<MessageId>;
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `euph_room_vault_actions` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 49s
[INFO] running `Command { std: "docker" "inspect" "35f56f6fb64878c2f45629ed05ec9dd58d8d6ef6e4d1c16a4fb75dcaec127e5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35f56f6fb64878c2f45629ed05ec9dd58d8d6ef6e4d1c16a4fb75dcaec127e5a", kill_on_drop: false }`
[INFO] [stdout] 35f56f6fb64878c2f45629ed05ec9dd58d8d6ef6e4d1c16a4fb75dcaec127e5a