[INFO] cloning repository https://github.com/jerobar/btc-from-scratch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jerobar/btc-from-scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjerobar%2Fbtc-from-scratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjerobar%2Fbtc-from-scratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd4bfb4e4b767d9c7a6c28a1cb939149eab15c11
[INFO] testing jerobar/btc-from-scratch against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjerobar%2Fbtc-from-scratch" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jerobar/btc-from-scratch
[INFO] finished tweaking git repo https://github.com/jerobar/btc-from-scratch
[INFO] tweaked toml for git repo https://github.com/jerobar/btc-from-scratch written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jerobar/btc-from-scratch on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jerobar/btc-from-scratch already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f22bf1929d9c27a198093a3650a4d2c77aa1f941d6c695e6b87bbd92af0b0d53
[INFO] running `Command { std: "docker" "start" "-a" "f22bf1929d9c27a198093a3650a4d2c77aa1f941d6c695e6b87bbd92af0b0d53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f22bf1929d9c27a198093a3650a4d2c77aa1f941d6c695e6b87bbd92af0b0d53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f22bf1929d9c27a198093a3650a4d2c77aa1f941d6c695e6b87bbd92af0b0d53", kill_on_drop: false }`
[INFO] [stdout] f22bf1929d9c27a198093a3650a4d2c77aa1f941d6c695e6b87bbd92af0b0d53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 337331fc9cd0e99b232a998f706b61f1a35b0d1d6d3c94d173e222b06526abe7
[INFO] running `Command { std: "docker" "start" "-a" "337331fc9cd0e99b232a998f706b61f1a35b0d1d6d3c94d173e222b06526abe7", kill_on_drop: false }`
[INFO] [stderr]    Compiling btc_from_scratch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `btc_from_scratch::U256`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use btc_from_scratch::U256;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "337331fc9cd0e99b232a998f706b61f1a35b0d1d6d3c94d173e222b06526abe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "337331fc9cd0e99b232a998f706b61f1a35b0d1d6d3c94d173e222b06526abe7", kill_on_drop: false }`
[INFO] [stdout] 337331fc9cd0e99b232a998f706b61f1a35b0d1d6d3c94d173e222b06526abe7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7573b474318401c9638834d8a3d8b25b8e82dab960fb6f6e856c2e67576dcfd8
[INFO] running `Command { std: "docker" "start" "-a" "7573b474318401c9638834d8a3d8b25b8e82dab960fb6f6e856c2e67576dcfd8", kill_on_drop: false }`
[INFO] [stderr]    Compiling btc_from_scratch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `btc_from_scratch::U256`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use btc_from_scratch::U256;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `btc_from_scratch::U256`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use btc_from_scratch::U256;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "7573b474318401c9638834d8a3d8b25b8e82dab960fb6f6e856c2e67576dcfd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7573b474318401c9638834d8a3d8b25b8e82dab960fb6f6e856c2e67576dcfd8", kill_on_drop: false }`
[INFO] [stdout] 7573b474318401c9638834d8a3d8b25b8e82dab960fb6f6e856c2e67576dcfd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 901a64b9bb84bc32feadc71c01cf4229fe3237905d63d4503530f32e075f9e0f
[INFO] running `Command { std: "docker" "start" "-a" "901a64b9bb84bc32feadc71c01cf4229fe3237905d63d4503530f32e075f9e0f", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `btc_from_scratch::U256`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use btc_from_scratch::U256;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `btc_from_scratch` (bin "btc_from_scratch") generated 1 warning (run `cargo fix --bin "btc_from_scratch"` to apply 1 suggestion)
[INFO] [stderr] warning: `btc_from_scratch` (bin "btc_from_scratch" test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/btc_from_scratch-5f5a4be002297f51)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/btc_from_scratch-c4b25d7d7a8ec90f)
[INFO] [stderr]      Running tests/u256_tests.rs (/opt/rustwide/target/debug/deps/u256_tests-c7deebf7deae901f)
[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] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test addition_tests::test_add_zero ... ok
[INFO] [stdout] test addition_tests::test_multi_limb_carry ... ok
[INFO] [stdout] test addition_tests::test_simple_addition ... ok
[INFO] [stdout] test addition_tests::test_single_limb_carry ... ok
[INFO] [stdout] test addition_tests::test_near_overflow ... ok
[INFO] [stdout] test addition_tests::test_partial_limb_values ... ok
[INFO] [stdout] test addition_tests::test_carry_chain ... ok
[INFO] [stdout] test addition_tests::test_alternating_limbs ... ok
[INFO] [stdout] test constructor_tests::test_zero ... ok
[INFO] [stdout] test constructor_tests::test_max_value ... ok
[INFO] [stderr]    Doc-tests btc_from_scratch
[INFO] [stdout] test addition_tests::test_overflow - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.14s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "901a64b9bb84bc32feadc71c01cf4229fe3237905d63d4503530f32e075f9e0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "901a64b9bb84bc32feadc71c01cf4229fe3237905d63d4503530f32e075f9e0f", kill_on_drop: false }`
[INFO] [stdout] 901a64b9bb84bc32feadc71c01cf4229fe3237905d63d4503530f32e075f9e0f