[INFO] cloning repository https://github.com/crawlis/professor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/crawlis/professor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrawlis%2Fprofessor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrawlis%2Fprofessor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e8463ff595cdab544893bf88a32376e6628af61e
[INFO] checking crawlis/professor against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrawlis%2Fprofessor" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/crawlis/professor on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/crawlis/professor
[INFO] finished tweaking git repo https://github.com/crawlis/professor
[INFO] tweaked toml for git repo https://github.com/crawlis/professor written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/crawlis/professor already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fb6912b878d8fb7eb26f85f2462fa697029d9068eac182131fd60816aa53c30
[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" "9fb6912b878d8fb7eb26f85f2462fa697029d9068eac182131fd60816aa53c30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fb6912b878d8fb7eb26f85f2462fa697029d9068eac182131fd60816aa53c30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fb6912b878d8fb7eb26f85f2462fa697029d9068eac182131fd60816aa53c30", kill_on_drop: false }`
[INFO] [stdout] 9fb6912b878d8fb7eb26f85f2462fa697029d9068eac182131fd60816aa53c30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 696e0bfff75ee0d699d0e099359f34853df36511ead68d3b4f3d1ebe086fbdaf
[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" "696e0bfff75ee0d699d0e099359f34853df36511ead68d3b4f3d1ebe086fbdaf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking dotenv v0.15.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking serde v1.0.114
[INFO] [stderr]     Checking diesel v1.4.5
[INFO] [stderr]     Checking serde_json v1.0.56
[INFO] [stderr]     Checking professor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `get_conn`
[INFO] [stdout]   --> src/persistence/database.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn get_conn(&self) -> Result<PgConnection, diesel::ConnectionError> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `wait_for_conn`
[INFO] [stdout]   --> src/persistence/database.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn wait_for_conn(
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_parent`
[INFO] [stdout]   --> src/persistence/database.rs:53:18
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub async fn insert_parent(
[INFO] [stdout]    |                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_node`
[INFO] [stdout]   --> src/persistence/database.rs:65:18
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub async fn insert_node(
[INFO] [stdout]    |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_node`
[INFO] [stdout]   --> src/persistence/database.rs:77:18
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub async fn update_node(
[INFO] [stdout]    |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `config`
[INFO] [stdout]   --> src/professor.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     config: ProfessorConfig,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `database`
[INFO] [stdout]   --> src/professor.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     database: database::Database,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_conn`
[INFO] [stdout]   --> src/persistence/database.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn get_conn(&self) -> Result<PgConnection, diesel::ConnectionError> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `wait_for_conn`
[INFO] [stdout]   --> src/persistence/database.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn wait_for_conn(
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_parent`
[INFO] [stdout]   --> src/persistence/database.rs:53:18
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub async fn insert_parent(
[INFO] [stdout]    |                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_node`
[INFO] [stdout]   --> src/persistence/database.rs:65:18
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub async fn insert_node(
[INFO] [stdout]    |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_node`
[INFO] [stdout]   --> src/persistence/database.rs:77:18
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub async fn update_node(
[INFO] [stdout]    |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `config`
[INFO] [stdout]   --> src/professor.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     config: ProfessorConfig,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `database`
[INFO] [stdout]   --> src/professor.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     database: database::Database,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 53s
[INFO] running `Command { std: "docker" "inspect" "696e0bfff75ee0d699d0e099359f34853df36511ead68d3b4f3d1ebe086fbdaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "696e0bfff75ee0d699d0e099359f34853df36511ead68d3b4f3d1ebe086fbdaf", kill_on_drop: false }`
[INFO] [stdout] 696e0bfff75ee0d699d0e099359f34853df36511ead68d3b4f3d1ebe086fbdaf