[INFO] cloning repository https://github.com/benlubas/how-does-rust-work
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benlubas/how-does-rust-work" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenlubas%2Fhow-does-rust-work", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenlubas%2Fhow-does-rust-work'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e340a92bb9fc434b2308b90aeb56d9dd7d25495
[INFO] testing benlubas/how-does-rust-work against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenlubas%2Fhow-does-rust-work" "/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/benlubas/how-does-rust-work on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/benlubas/how-does-rust-work
[INFO] finished tweaking git repo https://github.com/benlubas/how-does-rust-work
[INFO] tweaked toml for git repo https://github.com/benlubas/how-does-rust-work written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/benlubas/how-does-rust-work already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36eff85f371972273fd6a946cc05af03f2cb149cd223b74ad06f331ca2c7ede3
[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" "36eff85f371972273fd6a946cc05af03f2cb149cd223b74ad06f331ca2c7ede3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36eff85f371972273fd6a946cc05af03f2cb149cd223b74ad06f331ca2c7ede3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36eff85f371972273fd6a946cc05af03f2cb149cd223b74ad06f331ca2c7ede3", kill_on_drop: false }`
[INFO] [stdout] 36eff85f371972273fd6a946cc05af03f2cb149cd223b74ad06f331ca2c7ede3
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93ae377079c4acdd9cd64e368419f3b674a07433b269f71550c7862b2e7bc9ff
[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" "93ae377079c4acdd9cd64e368419f3b674a07433b269f71550c7862b2e7bc9ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling how-does-rust-work v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `next_id` is never read
[INFO] [stdout]   --> src/day5_structs.rs:46:3
[INFO] [stdout]    |
[INFO] [stdout] 46 |   next_id += 1;
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user2`
[INFO] [stdout]   --> src/day5_structs.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 |   let user2 = User {
[INFO] [stdout]    |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.50s
[INFO] running `Command { std: "docker" "inspect" "93ae377079c4acdd9cd64e368419f3b674a07433b269f71550c7862b2e7bc9ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93ae377079c4acdd9cd64e368419f3b674a07433b269f71550c7862b2e7bc9ff", kill_on_drop: false }`
[INFO] [stdout] 93ae377079c4acdd9cd64e368419f3b674a07433b269f71550c7862b2e7bc9ff
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 927c1f84e4ee7bfc0687439a8fabb659a47e5a1f586645a6ae0a0fa7fea6b2ed
[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" "927c1f84e4ee7bfc0687439a8fabb659a47e5a1f586645a6ae0a0fa7fea6b2ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling how-does-rust-work v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `next_id` is never read
[INFO] [stdout]   --> src/day5_structs.rs:46:3
[INFO] [stdout]    |
[INFO] [stdout] 46 |   next_id += 1;
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user2`
[INFO] [stdout]   --> src/day5_structs.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 |   let user2 = User {
[INFO] [stdout]    |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "927c1f84e4ee7bfc0687439a8fabb659a47e5a1f586645a6ae0a0fa7fea6b2ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "927c1f84e4ee7bfc0687439a8fabb659a47e5a1f586645a6ae0a0fa7fea6b2ed", kill_on_drop: false }`
[INFO] [stdout] 927c1f84e4ee7bfc0687439a8fabb659a47e5a1f586645a6ae0a0fa7fea6b2ed
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cac393c5e797ddc15798b42f15d62ed54cb1d68ad5fb72dca694d47f2b094abf
[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" "cac393c5e797ddc15798b42f15d62ed54cb1d68ad5fb72dca694d47f2b094abf", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: value assigned to `next_id` is never read
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/day5_structs.rs:46:3
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 46 |   next_id += 1;
[INFO] [stdout] 
[INFO] [stderr]    |   ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user2`
[INFO] [stderr]   --> src/day5_structs.rs:54:7
[INFO] [stderr]    |
[INFO] [stderr] 54 |   let user2 = User {
[INFO] [stderr]    |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/how_does_rust_work-654cfb82655b9e3f
[INFO] running `Command { std: "docker" "inspect" "cac393c5e797ddc15798b42f15d62ed54cb1d68ad5fb72dca694d47f2b094abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cac393c5e797ddc15798b42f15d62ed54cb1d68ad5fb72dca694d47f2b094abf", kill_on_drop: false }`
[INFO] [stdout] cac393c5e797ddc15798b42f15d62ed54cb1d68ad5fb72dca694d47f2b094abf