[INFO] cloning repository https://github.com/max-block/test__rocket_mongodb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/max-block/test__rocket_mongodb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmax-block%2Ftest__rocket_mongodb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmax-block%2Ftest__rocket_mongodb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ecf1a95905b0e83603194bacb4cd5ae9b1875b0f
[INFO] testing max-block/test__rocket_mongodb against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmax-block%2Ftest__rocket_mongodb" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/max-block/test__rocket_mongodb on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/max-block/test__rocket_mongodb
[INFO] finished tweaking git repo https://github.com/max-block/test__rocket_mongodb
[INFO] tweaked toml for git repo https://github.com/max-block/test__rocket_mongodb written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/max-block/test__rocket_mongodb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e225f7bdb6949d55ed1ebe3adba8a628d011159cc2bb40e49231e99a2609a926
[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" "e225f7bdb6949d55ed1ebe3adba8a628d011159cc2bb40e49231e99a2609a926", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e225f7bdb6949d55ed1ebe3adba8a628d011159cc2bb40e49231e99a2609a926", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e225f7bdb6949d55ed1ebe3adba8a628d011159cc2bb40e49231e99a2609a926", kill_on_drop: false }`
[INFO] [stdout] e225f7bdb6949d55ed1ebe3adba8a628d011159cc2bb40e49231e99a2609a926
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b076bf0bae533e2f496a5f82773add2c72a95ba1359897131b77c920184f4af
[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" "4b076bf0bae533e2f496a5f82773add2c72a95ba1359897131b77c920184f4af", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]    Compiling fastrand v1.3.5
[INFO] [stderr]    Compiling rustversion v1.0.3
[INFO] [stderr]    Compiling event-listener v2.4.0
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling async-task v4.0.1
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.2
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling stringprep v0.1.2
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.35
[INFO] [stderr]    Compiling nb-connect v1.0.0
[INFO] [stderr]    Compiling hostname v0.3.1
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling socket2 v0.3.15
[INFO] [stderr]    Compiling polling v1.1.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling async-channel v1.4.2
[INFO] [stderr]    Compiling async-mutex v1.3.0
[INFO] [stderr]    Compiling futures-lite v1.7.0
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling resolv-conf v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]    Compiling futures-intrusive v0.3.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling backtrace v0.3.50
[INFO] [stderr]    Compiling async-executor v1.3.0
[INFO] [stderr]    Compiling async-io v1.1.2
[INFO] [stderr]    Compiling blocking v1.0.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling async-global-executor v1.1.1
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling webpki v0.21.3
[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling rustls v0.17.0
[INFO] [stderr]    Compiling webpki-roots v0.18.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-rustls v0.13.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling async-trait v0.1.40
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling serde_with_macros v1.1.0
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling async-std v1.6.4
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]    Compiling thiserror v1.0.20
[INFO] [stderr]    Compiling pin-project v0.4.23
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling trust-dns-proto v0.19.5
[INFO] [stderr]    Compiling chrono v0.4.15
[INFO] [stderr]    Compiling serde_with v1.4.0
[INFO] [stderr]    Compiling trust-dns-resolver v0.19.5
[INFO] [stderr]    Compiling bson v1.1.0
[INFO] [stderr]    Compiling mongodb v1.1.1
[INFO] [stderr]    Compiling app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/db.rs:30:29
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn find_data(&self, name: Option<String>, limit: u64) {
[INFO] [stdout]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `limit`
[INFO] [stdout]   --> src/db.rs:30:51
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn find_data(&self, name: Option<String>, limit: u64) {
[INFO] [stdout]    |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_limit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find_data`
[INFO] [stdout]   --> src/db.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn find_data(&self, name: Option<String>, limit: u64) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 23s
[INFO] running `Command { std: "docker" "inspect" "4b076bf0bae533e2f496a5f82773add2c72a95ba1359897131b77c920184f4af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b076bf0bae533e2f496a5f82773add2c72a95ba1359897131b77c920184f4af", kill_on_drop: false }`
[INFO] [stdout] 4b076bf0bae533e2f496a5f82773add2c72a95ba1359897131b77c920184f4af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 806acef583468ee448eb965eac303a84fc5d02d79cb78653111d3b12adcc5c46
[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" "806acef583468ee448eb965eac303a84fc5d02d79cb78653111d3b12adcc5c46", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/db.rs:30:29
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn find_data(&self, name: Option<String>, limit: u64) {
[INFO] [stdout]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `limit`
[INFO] [stdout]   --> src/db.rs:30:51
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn find_data(&self, name: Option<String>, limit: u64) {
[INFO] [stdout]    |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_limit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `find_data`
[INFO] [stdout]   --> src/db.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn find_data(&self, name: Option<String>, limit: u64) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.85s
[INFO] running `Command { std: "docker" "inspect" "806acef583468ee448eb965eac303a84fc5d02d79cb78653111d3b12adcc5c46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "806acef583468ee448eb965eac303a84fc5d02d79cb78653111d3b12adcc5c46", kill_on_drop: false }`
[INFO] [stdout] 806acef583468ee448eb965eac303a84fc5d02d79cb78653111d3b12adcc5c46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 14404744da984ca35c6036669f08e1eeda6739dd219410da501d9fd4812c3fea
[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" "14404744da984ca35c6036669f08e1eeda6739dd219410da501d9fd4812c3fea", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/db.rs:30:29
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn find_data(&self, name: Option<String>, limit: u64) {
[INFO] [stderr]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `limit`
[INFO] [stderr]   --> src/db.rs:30:51
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn find_data(&self, name: Option<String>, limit: u64) {
[INFO] [stderr]    |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_limit`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find_data`
[INFO] [stderr]   --> src/db.rs:30:12
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn find_data(&self, name: Option<String>, limit: u64) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/app-d62dc603e09455a7
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "14404744da984ca35c6036669f08e1eeda6739dd219410da501d9fd4812c3fea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14404744da984ca35c6036669f08e1eeda6739dd219410da501d9fd4812c3fea", kill_on_drop: false }`
[INFO] [stdout] 14404744da984ca35c6036669f08e1eeda6739dd219410da501d9fd4812c3fea