[INFO] fetching crate message_db 0.0.6...
[INFO] checking message_db-0.0.6 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate message_db 0.0.6 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate message_db 0.0.6 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate message_db 0.0.6
[INFO] finished tweaking crates.io crate message_db 0.0.6
[INFO] tweaked toml for crates.io crate message_db 0.0.6 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94bf06f05a54fc3d15e2b2da534e53167a083e7fee22a75322c5a6a479fc27fd
[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" "94bf06f05a54fc3d15e2b2da534e53167a083e7fee22a75322c5a6a479fc27fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94bf06f05a54fc3d15e2b2da534e53167a083e7fee22a75322c5a6a479fc27fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94bf06f05a54fc3d15e2b2da534e53167a083e7fee22a75322c5a6a479fc27fd", kill_on_drop: false }`
[INFO] [stdout] 94bf06f05a54fc3d15e2b2da534e53167a083e7fee22a75322c5a6a479fc27fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb87a8633ce290e7a365e51b76c645018b2627a89affb0ee4495fe3f784a725d
[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" "eb87a8633ce290e7a365e51b76c645018b2627a89affb0ee4495fe3f784a725d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v1.2.1
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[INFO] [stderr]    Compiling serde_derive v1.0.125
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[INFO] [stderr]    Compiling futures-core v0.3.14
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
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[INFO] [stderr]    Compiling whoami v1.1.2
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[INFO] [stderr]     Checking ahash v0.4.7
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[INFO] [stderr]     Checking pin-utils v0.1.0
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[INFO] [stderr]    Compiling subtle v2.4.0
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[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
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[INFO] [stderr]    Compiling tokio-macros v1.1.0
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[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]     Checking futures-executor v0.3.14
[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]     Checking test-context v0.1.3
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
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[INFO] [stderr]     Checking sqlx-rt v0.5.2
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking sqlx-core v0.5.2
[INFO] [stderr]    Compiling sqlx-macros v0.5.2
[INFO] [stderr]     Checking sqlx v0.5.2
[INFO] [stderr]     Checking message_db v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tests/message_db.rs:76:3
[INFO] [stdout]    |
[INFO] [stdout] 76 |   subscription.load_position().await;
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tests/message_db.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     subscription.update_read_position(position).await;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 50s
[INFO] running `Command { std: "docker" "inspect" "eb87a8633ce290e7a365e51b76c645018b2627a89affb0ee4495fe3f784a725d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb87a8633ce290e7a365e51b76c645018b2627a89affb0ee4495fe3f784a725d", kill_on_drop: false }`
[INFO] [stdout] eb87a8633ce290e7a365e51b76c645018b2627a89affb0ee4495fe3f784a725d