[INFO] cloning repository https://github.com/Adrianbakke/busy_beaver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Adrianbakke/busy_beaver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdrianbakke%2Fbusy_beaver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdrianbakke%2Fbusy_beaver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bc8854b1a80ff928fcf81f39966c74f8eb868fd6
[INFO] testing Adrianbakke/busy_beaver against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdrianbakke%2Fbusy_beaver" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Adrianbakke/busy_beaver on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Adrianbakke/busy_beaver
[INFO] finished tweaking git repo https://github.com/Adrianbakke/busy_beaver
[INFO] tweaked toml for git repo https://github.com/Adrianbakke/busy_beaver written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Adrianbakke/busy_beaver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c18fbef1cdeaedba55b3611f4ada55c7394452bea4042254d1410be06cb6db42
[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" "c18fbef1cdeaedba55b3611f4ada55c7394452bea4042254d1410be06cb6db42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c18fbef1cdeaedba55b3611f4ada55c7394452bea4042254d1410be06cb6db42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c18fbef1cdeaedba55b3611f4ada55c7394452bea4042254d1410be06cb6db42", kill_on_drop: false }`
[INFO] [stdout] c18fbef1cdeaedba55b3611f4ada55c7394452bea4042254d1410be06cb6db42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2433d9c283ccff828f4db5f559bc797b97dac98f4e818eee048ff13ebd1d7d5d
[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" "2433d9c283ccff828f4db5f559bc797b97dac98f4e818eee048ff13ebd1d7d5d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling term v0.6.1
[INFO] [stderr]    Compiling busy_beaver_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `best_action_holder` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:388:9
[INFO] [stdout]     |
[INFO] [stdout] 388 |     let mut best_action_holder = Stats::default();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]     = note: consider using `_best_action_holder` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_action_holder` is never read
[INFO] [stdout]    --> src/main.rs:393:17
[INFO] [stdout]     |
[INFO] [stdout] 393 |                 best_action_holder = stats.clone();
[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: function is never used: `highest_score`
[INFO] [stdout]    --> src/main.rs:352:4
[INFO] [stdout]     |
[INFO] [stdout] 352 | fn highest_score(stats: &Vec<Stats>) -> &Stats {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `highest_action`
[INFO] [stdout]    --> src/main.rs:362:4
[INFO] [stdout]     |
[INFO] [stdout] 362 | fn highest_action(stats: &Vec<Stats>) -> &Stats {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.75s
[INFO] running `Command { std: "docker" "inspect" "2433d9c283ccff828f4db5f559bc797b97dac98f4e818eee048ff13ebd1d7d5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2433d9c283ccff828f4db5f559bc797b97dac98f4e818eee048ff13ebd1d7d5d", kill_on_drop: false }`
[INFO] [stdout] 2433d9c283ccff828f4db5f559bc797b97dac98f4e818eee048ff13ebd1d7d5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e72e0c8eeaa3248bf4e0a973ddb81919ec6be5a5984c6a97954502468a2d6922
[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" "e72e0c8eeaa3248bf4e0a973ddb81919ec6be5a5984c6a97954502468a2d6922", kill_on_drop: false }`
[INFO] [stderr]    Compiling busy_beaver_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `best_action_holder` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:388:9
[INFO] [stdout]     |
[INFO] [stdout] 388 |     let mut best_action_holder = Stats::default();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]     = note: consider using `_best_action_holder` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_action_holder` is never read
[INFO] [stdout]    --> src/main.rs:393:17
[INFO] [stdout]     |
[INFO] [stdout] 393 |                 best_action_holder = stats.clone();
[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: function is never used: `highest_score`
[INFO] [stdout]    --> src/main.rs:352:4
[INFO] [stdout]     |
[INFO] [stdout] 352 | fn highest_score(stats: &Vec<Stats>) -> &Stats {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `highest_action`
[INFO] [stdout]    --> src/main.rs:362:4
[INFO] [stdout]     |
[INFO] [stdout] 362 | fn highest_action(stats: &Vec<Stats>) -> &Stats {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "e72e0c8eeaa3248bf4e0a973ddb81919ec6be5a5984c6a97954502468a2d6922", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e72e0c8eeaa3248bf4e0a973ddb81919ec6be5a5984c6a97954502468a2d6922", kill_on_drop: false }`
[INFO] [stdout] e72e0c8eeaa3248bf4e0a973ddb81919ec6be5a5984c6a97954502468a2d6922
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.45.2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 604651252b8ea5303921816f12e986a67c7e9d5d26514e30cacd0086f046dc34
[INFO] running `Command { std: "docker" "start" "-a" "604651252b8ea5303921816f12e986a67c7e9d5d26514e30cacd0086f046dc34", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variable `best_action_holder` is assigned to, but never used
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/main.rs:388:9
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 388 |     let mut best_action_holder = Stats::default();
[INFO] [stdout] 
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]     = note: consider using `_best_action_holder` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `best_action_holder` is never read
[INFO] [stderr]    --> src/main.rs:393:17
[INFO] [stderr]     |
[INFO] [stderr] 393 |                 best_action_holder = stats.clone();
[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: function is never used: `highest_score`
[INFO] [stderr]    --> src/main.rs:352:4
[INFO] [stderr]     |
[INFO] [stderr] 352 | fn highest_score(stats: &Vec<Stats>) -> &Stats {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `highest_action`
[INFO] [stderr]    --> src/main.rs:362:4
[INFO] [stderr]     |
[INFO] [stderr] 362 | fn highest_action(stats: &Vec<Stats>) -> &Stats {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/busy_beaver_rs-4376fd4b19b4b383
[INFO] running `Command { std: "docker" "inspect" "604651252b8ea5303921816f12e986a67c7e9d5d26514e30cacd0086f046dc34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "604651252b8ea5303921816f12e986a67c7e9d5d26514e30cacd0086f046dc34", kill_on_drop: false }`
[INFO] [stdout] 604651252b8ea5303921816f12e986a67c7e9d5d26514e30cacd0086f046dc34