[INFO] cloning repository https://github.com/mkeeter/nmbr9-z3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mkeeter/nmbr9-z3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkeeter%2Fnmbr9-z3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkeeter%2Fnmbr9-z3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 103368b9cb2cfdff2d4cc1831a2946fbafbe58cf
[INFO] testing mkeeter/nmbr9-z3 against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkeeter%2Fnmbr9-z3" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mkeeter/nmbr9-z3 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/mkeeter/nmbr9-z3
[INFO] finished tweaking git repo https://github.com/mkeeter/nmbr9-z3
[INFO] tweaked toml for git repo https://github.com/mkeeter/nmbr9-z3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/mkeeter/nmbr9-z3 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 89bc88aa4f4474aa64eb9df24922f30282464f5a491bd72f8c1434b262d07c31
[INFO] running `Command { std: "docker" "start" "-a" "89bc88aa4f4474aa64eb9df24922f30282464f5a491bd72f8c1434b262d07c31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89bc88aa4f4474aa64eb9df24922f30282464f5a491bd72f8c1434b262d07c31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89bc88aa4f4474aa64eb9df24922f30282464f5a491bd72f8c1434b262d07c31", kill_on_drop: false }`
[INFO] [stdout] 89bc88aa4f4474aa64eb9df24922f30282464f5a491bd72f8c1434b262d07c31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] d25445303ff47b301ae4ab2c28182847d9c7b516959e94327058edfeb29b8ddc
[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" "d25445303ff47b301ae4ab2c28182847d9c7b516959e94327058edfeb29b8ddc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling z3-sys v0.4.0 (https://github.com/prove-rs/z3.rs#b39aa9f8)
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand v0.6.4
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling z3 v0.3.2 (https://github.com/prove-rs/z3.rs#b39aa9f8)
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling num_cpus v1.9.0
[INFO] [stderr]    Compiling rand_os v0.1.1
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling nmbr9-z3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:490:9
[INFO] [stdout]     |
[INFO] [stdout] 490 |     for t in targets {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:505:9
[INFO] [stdout]     |
[INFO] [stdout] 505 |     for i in 0..10 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/main.rs:176:17
[INFO] [stdout]     |
[INFO] [stdout] 176 |             for k in 0..(i % 3) {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `most_pieces`
[INFO] [stdout]    --> src/main.rs:262:13
[INFO] [stdout]     |
[INFO] [stdout] 262 |         let most_pieces = self.0.iter().map(|v| v.len()).max().unwrap_or(0);
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_most_pieces`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:472:9
[INFO] [stdout]     |
[INFO] [stdout] 472 |     let mut base = (1..(3 as usize).pow(5))
[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: associated function is never used: `as_u128`
[INFO] [stdout]    --> src/main.rs:185:8
[INFO] [stdout]     |
[INFO] [stdout] 185 |     fn as_u128(&self) -> u128 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.77s
[INFO] running `Command { std: "docker" "inspect" "d25445303ff47b301ae4ab2c28182847d9c7b516959e94327058edfeb29b8ddc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d25445303ff47b301ae4ab2c28182847d9c7b516959e94327058edfeb29b8ddc", kill_on_drop: false }`
[INFO] [stdout] d25445303ff47b301ae4ab2c28182847d9c7b516959e94327058edfeb29b8ddc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 035cde2192742459b86bcca53bb6e442595d91d59f17860b7ddef51c496569aa
[INFO] running `Command { std: "docker" "start" "-a" "035cde2192742459b86bcca53bb6e442595d91d59f17860b7ddef51c496569aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling nmbr9-z3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:490:9
[INFO] [stdout]     |
[INFO] [stdout] 490 |     for t in targets {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:505:9
[INFO] [stdout]     |
[INFO] [stdout] 505 |     for i in 0..10 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/main.rs:176:17
[INFO] [stdout]     |
[INFO] [stdout] 176 |             for k in 0..(i % 3) {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `most_pieces`
[INFO] [stdout]    --> src/main.rs:262:13
[INFO] [stdout]     |
[INFO] [stdout] 262 |         let most_pieces = self.0.iter().map(|v| v.len()).max().unwrap_or(0);
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_most_pieces`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:472:9
[INFO] [stdout]     |
[INFO] [stdout] 472 |     let mut base = (1..(3 as usize).pow(5))
[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: associated function is never used: `as_u128`
[INFO] [stdout]    --> src/main.rs:185:8
[INFO] [stdout]     |
[INFO] [stdout] 185 |     fn as_u128(&self) -> u128 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "035cde2192742459b86bcca53bb6e442595d91d59f17860b7ddef51c496569aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "035cde2192742459b86bcca53bb6e442595d91d59f17860b7ddef51c496569aa", kill_on_drop: false }`
[INFO] [stdout] 035cde2192742459b86bcca53bb6e442595d91d59f17860b7ddef51c496569aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fbf87fa756d7e8bfcb717cfd8819563960bfdc2e8790a8e14cb1fb53b49aa18f
[INFO] running `Command { std: "docker" "start" "-a" "fbf87fa756d7e8bfcb717cfd8819563960bfdc2e8790a8e14cb1fb53b49aa18f", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/main.rs:490:9
[INFO] [stderr]     |
[INFO] [stderr] 490 |     for t in targets {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:505:9
[INFO] [stderr]     |
[INFO] [stderr] 505 |     for i in 0..10 {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]    --> src/main.rs:176:17
[INFO] [stderr]     |
[INFO] [stderr] 176 |             for k in 0..(i % 3) {
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `most_pieces`
[INFO] [stderr]    --> src/main.rs:262:13
[INFO] [stderr]     |
[INFO] [stderr] 262 |         let most_pieces = self.0.iter().map(|v| v.len()).max().unwrap_or(0);
[INFO] [stderr]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_most_pieces`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:472:9
[INFO] [stderr]     |
[INFO] [stderr] 472 |     let mut base = (1..(3 as usize).pow(5))
[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: associated function is never used: `as_u128`
[INFO] [stderr]    --> src/main.rs:185:8
[INFO] [stderr]     |
[INFO] [stderr] 185 |     fn as_u128(&self) -> u128 {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/nmbr9_z3-40f51f7e6d719b23
[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" "fbf87fa756d7e8bfcb717cfd8819563960bfdc2e8790a8e14cb1fb53b49aa18f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbf87fa756d7e8bfcb717cfd8819563960bfdc2e8790a8e14cb1fb53b49aa18f", kill_on_drop: false }`
[INFO] [stdout] fbf87fa756d7e8bfcb717cfd8819563960bfdc2e8790a8e14cb1fb53b49aa18f