[INFO] cloning repository https://github.com/ultrasaurus/idiomatic-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ultrasaurus/idiomatic-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fultrasaurus%2Fidiomatic-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fultrasaurus%2Fidiomatic-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 80dbce00c0f624fc4ad75c1848ad99585a62f94e
[INFO] testing ultrasaurus/idiomatic-rust against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fultrasaurus%2Fidiomatic-rust" "/workspace/builds/worker-75/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-75/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ultrasaurus/idiomatic-rust on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ultrasaurus/idiomatic-rust
[INFO] finished tweaking git repo https://github.com/ultrasaurus/idiomatic-rust
[INFO] tweaked toml for git repo https://github.com/ultrasaurus/idiomatic-rust written to /workspace/builds/worker-75/source/Cargo.toml
[INFO] crate git repo https://github.com/ultrasaurus/idiomatic-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b0e30c27f8237e874b96c7a6040924390d12db8cf03fee4c698c8cf76e80224
[INFO] running `Command { std: "docker" "start" "-a" "9b0e30c27f8237e874b96c7a6040924390d12db8cf03fee4c698c8cf76e80224", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b0e30c27f8237e874b96c7a6040924390d12db8cf03fee4c698c8cf76e80224", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b0e30c27f8237e874b96c7a6040924390d12db8cf03fee4c698c8cf76e80224", kill_on_drop: false }`
[INFO] [stdout] 9b0e30c27f8237e874b96c7a6040924390d12db8cf03fee4c698c8cf76e80224
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04d1318431fe530b486264f138de943336a3ff1669da26763a8f7454991250e8
[INFO] running `Command { std: "docker" "start" "-a" "04d1318431fe530b486264f138de943336a3ff1669da26763a8f7454991250e8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling idiomatic-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.73s
[INFO] running `Command { std: "docker" "inspect" "04d1318431fe530b486264f138de943336a3ff1669da26763a8f7454991250e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04d1318431fe530b486264f138de943336a3ff1669da26763a8f7454991250e8", kill_on_drop: false }`
[INFO] [stdout] 04d1318431fe530b486264f138de943336a3ff1669da26763a8f7454991250e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e59f9c01c7e21698571c2d080c55212c840e27b3372de459b727d20b1fe0c660
[INFO] running `Command { std: "docker" "start" "-a" "e59f9c01c7e21698571c2d080c55212c840e27b3372de459b727d20b1fe0c660", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling idiomatic-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `t`
[INFO] [stdout]   --> examples/into.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     t: TypeMarker,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `bytes`
[INFO] [stdout]   --> examples/into.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     bytes: [u8; 8]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `float_to_from_bytes` has been stable since 1.40.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> examples/into.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(float_to_from_bytes)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `Command { std: "docker" "inspect" "e59f9c01c7e21698571c2d080c55212c840e27b3372de459b727d20b1fe0c660", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e59f9c01c7e21698571c2d080c55212c840e27b3372de459b727d20b1fe0c660", kill_on_drop: false }`
[INFO] [stdout] e59f9c01c7e21698571c2d080c55212c840e27b3372de459b727d20b1fe0c660
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f4a020f1ed8399e26b2195c897bbba34f32e335cef9394037bbd2c68d778eb70
[INFO] running `Command { std: "docker" "start" "-a" "f4a020f1ed8399e26b2195c897bbba34f32e335cef9394037bbd2c68d778eb70", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `t`
[INFO] [stderr]   --> examples/into.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     t: TypeMarker,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `bytes`
[INFO] [stderr]   --> examples/into.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     bytes: [u8; 8]
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `float_to_from_bytes` has been stable since 1.40.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> examples/into.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![feature(float_to_from_bytes)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `idiomatic-rust` (example "into") generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/idiomatic_rust-93a6f77b90009a39)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f4a020f1ed8399e26b2195c897bbba34f32e335cef9394037bbd2c68d778eb70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4a020f1ed8399e26b2195c897bbba34f32e335cef9394037bbd2c68d778eb70", kill_on_drop: false }`
[INFO] [stdout] f4a020f1ed8399e26b2195c897bbba34f32e335cef9394037bbd2c68d778eb70