[INFO] cloning repository https://github.com/maxm89/rsantas-workshop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maxm89/rsantas-workshop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxm89%2Frsantas-workshop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxm89%2Frsantas-workshop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33fb3b5b537c1de107095492b06615b9122f89a4
[INFO] testing maxm89/rsantas-workshop against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxm89%2Frsantas-workshop" "/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/maxm89/rsantas-workshop 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/maxm89/rsantas-workshop
[INFO] finished tweaking git repo https://github.com/maxm89/rsantas-workshop
[INFO] tweaked toml for git repo https://github.com/maxm89/rsantas-workshop written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/maxm89/rsantas-workshop 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] warning: unused manifest key: profile.dev.unused_variables
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa94a544256d848918fe5d9fca13d3d045d1ac5dde3762b137d7ff7b4a0e69a9
[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" "fa94a544256d848918fe5d9fca13d3d045d1ac5dde3762b137d7ff7b4a0e69a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa94a544256d848918fe5d9fca13d3d045d1ac5dde3762b137d7ff7b4a0e69a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa94a544256d848918fe5d9fca13d3d045d1ac5dde3762b137d7ff7b4a0e69a9", kill_on_drop: false }`
[INFO] [stdout] fa94a544256d848918fe5d9fca13d3d045d1ac5dde3762b137d7ff7b4a0e69a9
[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=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] d111ad82d3e5019d4f9bc24d1ab799c5150fd2a45509420b8921b45f466ce2c3
[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" "d111ad82d3e5019d4f9bc24d1ab799c5150fd2a45509420b8921b45f466ce2c3", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: profile.dev.unused_variables
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling bstr v0.2.9
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling csv v1.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling rsantas-workshop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::santa::Move`
[INFO] [stdout]  --> src/sa.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::santa::Move;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/santa.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let mut costs: f32 = 0.0;
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tabu_search.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |             let mut sol = initial::random(&self.families);
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.05s
[INFO] running `Command { std: "docker" "inspect" "d111ad82d3e5019d4f9bc24d1ab799c5150fd2a45509420b8921b45f466ce2c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d111ad82d3e5019d4f9bc24d1ab799c5150fd2a45509420b8921b45f466ce2c3", kill_on_drop: false }`
[INFO] [stdout] d111ad82d3e5019d4f9bc24d1ab799c5150fd2a45509420b8921b45f466ce2c3
[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=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] 29ca5730d4b98cfbd22251aee4b3bacf31f54c5435755a4f070d43d0d8c1498a
[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" "29ca5730d4b98cfbd22251aee4b3bacf31f54c5435755a4f070d43d0d8c1498a", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: profile.dev.unused_variables
[INFO] [stderr]    Compiling rsantas-workshop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::santa::Move`
[INFO] [stdout]  --> src/sa.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::santa::Move;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/santa.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let mut costs: f32 = 0.0;
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tabu_search.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |             let mut sol = initial::random(&self.families);
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "29ca5730d4b98cfbd22251aee4b3bacf31f54c5435755a4f070d43d0d8c1498a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29ca5730d4b98cfbd22251aee4b3bacf31f54c5435755a4f070d43d0d8c1498a", kill_on_drop: false }`
[INFO] [stdout] 29ca5730d4b98cfbd22251aee4b3bacf31f54c5435755a4f070d43d0d8c1498a
[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=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] c8d37a79df0f6fb7df9ac0c112240ea4fbace64133020e154ebfb67fd774a631
[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" "c8d37a79df0f6fb7df9ac0c112240ea4fbace64133020e154ebfb67fd774a631", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: profile.dev.unused_variables
[INFO] [stderr] warning: unused import: `crate::santa::Move`
[INFO] [stderr]  --> src/sa.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::santa::Move;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/santa.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 |         let mut costs: f32 = 0.0;
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tabu_search.rs:25:17
[INFO] [stderr]    |
[INFO] [stderr] 25 |             let mut sol = initial::random(&self.families);
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rsantas_workshop-3c26208bb5dd35d3
[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" "c8d37a79df0f6fb7df9ac0c112240ea4fbace64133020e154ebfb67fd774a631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8d37a79df0f6fb7df9ac0c112240ea4fbace64133020e154ebfb67fd774a631", kill_on_drop: false }`
[INFO] [stdout] c8d37a79df0f6fb7df9ac0c112240ea4fbace64133020e154ebfb67fd774a631