[INFO] cloning repository https://github.com/SuchMonkey/caribou
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SuchMonkey/caribou" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuchMonkey%2Fcaribou", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuchMonkey%2Fcaribou'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 777e9bd03aade83c15a4b236bdeba5cce0618543
[INFO] checking SuchMonkey/caribou against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSuchMonkey%2Fcaribou" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SuchMonkey/caribou on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SuchMonkey/caribou
[INFO] finished tweaking git repo https://github.com/SuchMonkey/caribou
[INFO] tweaked toml for git repo https://github.com/SuchMonkey/caribou written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/SuchMonkey/caribou already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04b6bd9a262e6995988151139fce073c011a220c5e5e72bc6d277c8a23769410
[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" "04b6bd9a262e6995988151139fce073c011a220c5e5e72bc6d277c8a23769410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04b6bd9a262e6995988151139fce073c011a220c5e5e72bc6d277c8a23769410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04b6bd9a262e6995988151139fce073c011a220c5e5e72bc6d277c8a23769410", kill_on_drop: false }`
[INFO] [stdout] 04b6bd9a262e6995988151139fce073c011a220c5e5e72bc6d277c8a23769410
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 886c909ab46d350b2be295a10fd3fd1c22f7a210801975f46b433da65227d3ca
[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" "886c909ab46d350b2be295a10fd3fd1c22f7a210801975f46b433da65227d3ca", 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] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]     Checking arrayref v0.3.4
[INFO] [stderr]     Checking md5 v0.3.7
[INFO] [stderr]     Checking fallible-iterator v0.1.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking phf_shared v0.7.21
[INFO] [stderr]    Compiling syntex_fmt_macros v0.5.0
[INFO] [stderr]     Checking socket2 v0.3.5
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]    Compiling syn v0.13.10
[INFO] [stderr]     Checking digest v0.7.2
[INFO] [stderr]     Checking crypto-mac v0.5.2
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking phf v0.7.21
[INFO] [stderr]     Checking hmac v0.5.0
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]     Checking postgres-protocol v0.3.2
[INFO] [stderr]     Checking postgres-shared v0.4.1
[INFO] [stderr]     Checking postgres v0.15.2
[INFO] [stderr]    Compiling derive-error-chain v0.11.1
[INFO] [stderr]     Checking backtrace v0.3.7
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking dotenv v0.11.0
[INFO] [stderr]     Checking caribou v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/graph.rs:8:36
[INFO] [stdout]   |
[INFO] [stdout] 8 |     node_factory_register: Vec<Box<NodeFactory>>,
[INFO] [stdout]   |                                    ^^^^^^^^^^^ help: use `dyn`: `dyn NodeFactory`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/graph.rs:19:63
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn register_node_factory(&mut self, node_factory: Box<NodeFactory>) {
[INFO] [stdout]    |                                                               ^^^^^^^^^^^ help: use `dyn`: `dyn NodeFactory`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `dotenv::dotenv`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use dotenv::dotenv;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/graph.rs:8:36
[INFO] [stdout]   |
[INFO] [stdout] 8 |     node_factory_register: Vec<Box<NodeFactory>>,
[INFO] [stdout]   |                                    ^^^^^^^^^^^ help: use `dyn`: `dyn NodeFactory`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/graph.rs:19:63
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn register_node_factory(&mut self, node_factory: Box<NodeFactory>) {
[INFO] [stdout]    |                                                               ^^^^^^^^^^^ help: use `dyn`: `dyn NodeFactory`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `dotenv::dotenv`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use dotenv::dotenv;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.81s
[INFO] running `Command { std: "docker" "inspect" "886c909ab46d350b2be295a10fd3fd1c22f7a210801975f46b433da65227d3ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "886c909ab46d350b2be295a10fd3fd1c22f7a210801975f46b433da65227d3ca", kill_on_drop: false }`
[INFO] [stdout] 886c909ab46d350b2be295a10fd3fd1c22f7a210801975f46b433da65227d3ca