[INFO] cloning repository https://github.com/szbergeron/fizzbuzz_opt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/szbergeron/fizzbuzz_opt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszbergeron%2Ffizzbuzz_opt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszbergeron%2Ffizzbuzz_opt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5f5117f1aa50c7f44fac23a90eb325f8e246917e
[INFO] testing szbergeron/fizzbuzz_opt against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszbergeron%2Ffizzbuzz_opt" "/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/szbergeron/fizzbuzz_opt on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/szbergeron/fizzbuzz_opt
[INFO] finished tweaking git repo https://github.com/szbergeron/fizzbuzz_opt
[INFO] tweaked toml for git repo https://github.com/szbergeron/fizzbuzz_opt written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/szbergeron/fizzbuzz_opt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9108b503c8d5b3f6cf6b2c6fb5998684833bad95a149a6983e165a4121689cb4
[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" "9108b503c8d5b3f6cf6b2c6fb5998684833bad95a149a6983e165a4121689cb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9108b503c8d5b3f6cf6b2c6fb5998684833bad95a149a6983e165a4121689cb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9108b503c8d5b3f6cf6b2c6fb5998684833bad95a149a6983e165a4121689cb4", kill_on_drop: false }`
[INFO] [stdout] 9108b503c8d5b3f6cf6b2c6fb5998684833bad95a149a6983e165a4121689cb4
[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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--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] 0d04688b36f51640803f3314709773a416e9752d12c9d237176f3023253b0623
[INFO] running `Command { std: "docker" "start" "-a" "0d04688b36f51640803f3314709773a416e9752d12c9d237176f3023253b0623", kill_on_drop: false }`
[INFO] [stderr]    Compiling fizzbuzz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `upper`
[INFO] [stdout]  --> src/lib.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn nothing(upper: u64) -> u64 {
[INFO] [stdout]   |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_upper`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Duration`
[INFO] [stdout]  --> src/main.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `upper`
[INFO] [stdout]  --> src/lib.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn nothing(upper: u64) -> u64 {
[INFO] [stdout]   |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_upper`
[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 0.87s
[INFO] running `Command { std: "docker" "inspect" "0d04688b36f51640803f3314709773a416e9752d12c9d237176f3023253b0623", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d04688b36f51640803f3314709773a416e9752d12c9d237176f3023253b0623", kill_on_drop: false }`
[INFO] [stdout] 0d04688b36f51640803f3314709773a416e9752d12c9d237176f3023253b0623
[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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54c7fd57dcf39e5a72dcc12b73287bb0238f9d5bda9455465e9248e2db93441b
[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" "54c7fd57dcf39e5a72dcc12b73287bb0238f9d5bda9455465e9248e2db93441b", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `upper`
[INFO] [stdout]  --> src/lib.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn nothing(upper: u64) -> u64 {
[INFO] [stdout]   |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_upper`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling fizzbuzz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `upper`
[INFO] [stdout]  --> src/lib.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn nothing(upper: u64) -> u64 {
[INFO] [stdout]   |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_upper`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Duration`
[INFO] [stdout]  --> src/main.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `upper`
[INFO] [stdout]  --> src/lib.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn nothing(upper: u64) -> u64 {
[INFO] [stdout]   |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_upper`
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "54c7fd57dcf39e5a72dcc12b73287bb0238f9d5bda9455465e9248e2db93441b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54c7fd57dcf39e5a72dcc12b73287bb0238f9d5bda9455465e9248e2db93441b", kill_on_drop: false }`
[INFO] [stdout] 54c7fd57dcf39e5a72dcc12b73287bb0238f9d5bda9455465e9248e2db93441b
[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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ccc4c593c4acaaa19a38f47b7e0a2aec75a90dc62a5a1cf6655c5e6d8c095754
[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" "ccc4c593c4acaaa19a38f47b7e0a2aec75a90dc62a5a1cf6655c5e6d8c095754", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `upper`
[INFO] [stderr]  --> src/lib.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn nothing(upper: u64) -> u64 {
[INFO] [stderr]   |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_upper`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `upper`
[INFO] [stderr]  --> src/lib.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn nothing(upper: u64) -> u64 {
[INFO] [stderr]   |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_upper`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/main.rs:1:17
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `upper`
[INFO] [stderr]  --> src/lib.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn nothing(upper: u64) -> u64 {
[INFO] [stderr]   |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_upper`
[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 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fizzbuzz-0782b1c61b5ed9c0
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fizzbuzz-a058b2c34292e7a7
[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] [stderr]    Doc-tests fizzbuzz
[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] [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" "ccc4c593c4acaaa19a38f47b7e0a2aec75a90dc62a5a1cf6655c5e6d8c095754", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccc4c593c4acaaa19a38f47b7e0a2aec75a90dc62a5a1cf6655c5e6d8c095754", kill_on_drop: false }`
[INFO] [stdout] ccc4c593c4acaaa19a38f47b7e0a2aec75a90dc62a5a1cf6655c5e6d8c095754