[INFO] cloning repository https://github.com/mavroprovato/rust-algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mavroprovato/rust-algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmavroprovato%2Frust-algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmavroprovato%2Frust-algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8f4dafeb76fbceaf9f0ce139139222609dfcff2a
[INFO] testing mavroprovato/rust-algorithms against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmavroprovato%2Frust-algorithms" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mavroprovato/rust-algorithms on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mavroprovato/rust-algorithms
[INFO] finished tweaking git repo https://github.com/mavroprovato/rust-algorithms
[INFO] tweaked toml for git repo https://github.com/mavroprovato/rust-algorithms written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mavroprovato/rust-algorithms already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 74409e7d22f318b723137ef0f1996b7fa9a5880a2624d58c7bffe3e1d3be4993
[INFO] running `Command { std: "docker" "start" "-a" "74409e7d22f318b723137ef0f1996b7fa9a5880a2624d58c7bffe3e1d3be4993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74409e7d22f318b723137ef0f1996b7fa9a5880a2624d58c7bffe3e1d3be4993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74409e7d22f318b723137ef0f1996b7fa9a5880a2624d58c7bffe3e1d3be4993", kill_on_drop: false }`
[INFO] [stdout] 74409e7d22f318b723137ef0f1996b7fa9a5880a2624d58c7bffe3e1d3be4993
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 512bad606766d748b92ca837593a483b59cb0e4f18a587dbd1dd4e35bc929d8e
[INFO] running `Command { std: "docker" "start" "-a" "512bad606766d748b92ca837593a483b59cb0e4f18a587dbd1dd4e35bc929d8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/bin/percolation.rs:76:43
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 panic!("Cannot parse line {}: need at least two integers")
[INFO] [stdout]    |                                           ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 panic!("Cannot parse line {}: need at least two integers", ...)
[INFO] [stdout]    |                                                                          ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 panic!("{}", "Cannot parse line {}: need at least two integers")
[INFO] [stdout]    |                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "512bad606766d748b92ca837593a483b59cb0e4f18a587dbd1dd4e35bc929d8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512bad606766d748b92ca837593a483b59cb0e4f18a587dbd1dd4e35bc929d8e", kill_on_drop: false }`
[INFO] [stdout] 512bad606766d748b92ca837593a483b59cb0e4f18a587dbd1dd4e35bc929d8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ad5dfd6ef942a6c4cb5bd1f84ffe5e30302c6ee0c22f587787dd07ecadb9d6c
[INFO] running `Command { std: "docker" "start" "-a" "2ad5dfd6ef942a6c4cb5bd1f84ffe5e30302c6ee0c22f587787dd07ecadb9d6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/bin/percolation.rs:76:43
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 panic!("Cannot parse line {}: need at least two integers")
[INFO] [stdout]    |                                           ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 panic!("Cannot parse line {}: need at least two integers", ...)
[INFO] [stdout]    |                                                                          ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 panic!("{}", "Cannot parse line {}: need at least two integers")
[INFO] [stdout]    |                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/bin/percolation.rs:76:43
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 panic!("Cannot parse line {}: need at least two integers")
[INFO] [stdout]    |                                           ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 panic!("Cannot parse line {}: need at least two integers", ...)
[INFO] [stdout]    |                                                                          ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 panic!("{}", "Cannot parse line {}: need at least two integers")
[INFO] [stdout]    |                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "2ad5dfd6ef942a6c4cb5bd1f84ffe5e30302c6ee0c22f587787dd07ecadb9d6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ad5dfd6ef942a6c4cb5bd1f84ffe5e30302c6ee0c22f587787dd07ecadb9d6c", kill_on_drop: false }`
[INFO] [stdout] 2ad5dfd6ef942a6c4cb5bd1f84ffe5e30302c6ee0c22f587787dd07ecadb9d6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a9a805b77c8cb317e74ab147cd9e25026738450ebe5e81036099883e0c08b0ba
[INFO] running `Command { std: "docker" "start" "-a" "a9a805b77c8cb317e74ab147cd9e25026738450ebe5e81036099883e0c08b0ba", kill_on_drop: false }`
[INFO] [stderr] warning: panic message contains an unused formatting placeholder
[INFO] [stderr]   --> src/bin/percolation.rs:76:43
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 panic!("Cannot parse line {}: need at least two integers")
[INFO] [stderr]    |                                           ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stderr] help: add the missing argument
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 panic!("Cannot parse line {}: need at least two integers", ...)
[INFO] [stderr]    |                                                                          ^^^^^
[INFO] [stderr] help: or add a "{}" format string to use the message literally
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 panic!("{}", "Cannot parse line {}: need at least two integers")
[INFO] [stderr]    |                        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-algorithms` (bin "percolation" test) generated 1 warning
[INFO] [stderr] warning: `rust-algorithms` (bin "percolation") generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_algorithms-e2de105598227ab8)
[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 (/opt/rustwide/target/debug/deps/percolation-86eddde8a70b01f2)
[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 tests/tests.rs (/opt/rustwide/target/debug/deps/tests-8e4198c48fa93b88)
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test union_find::quick_find::quick_find_component_count ... ok
[INFO] [stdout] test union_find::quick_find::quick_find_union ... ok
[INFO] [stdout] test union_find::quick_find::quick_find_union_already_connected ... ok
[INFO] [stdout] test union_find::quick_union::quick_union_union ... ok
[INFO] [stdout] test union_find::weighted_quick_union::quick_union_component_count ... ok
[INFO] [stdout] test union_find::weighted_quick_union::quick_union_union_already_connected ... ok
[INFO] [stdout] test union_find::weighted_quick_union::quick_union_union ... ok
[INFO] [stdout] test union_find::weighted_quick_union_path_compression::quick_union_union ... ok
[INFO] [stdout] test union_find::weighted_quick_union_path_compression::quick_union_union_already_connected ... ok
[INFO] [stdout] test union_find::weighted_quick_union_path_compression::quick_union_component_count ... ok
[INFO] [stdout] test union_find::quick_union::quick_union_component_count ... ok
[INFO] [stdout] test union_find::quick_union::quick_union_union_already_connected ... ok
[INFO] [stdout] test union_find::quick_find::quick_find_not_zero - should panic ... ok
[INFO] [stdout] test union_find::quick_find::quick_find_out_of_bounds - should panic ... ok
[INFO] [stdout] test union_find::quick_union::quick_union_not_zero - should panic ... ok
[INFO] [stdout] test union_find::weighted_quick_union::quick_union_not_zero - should panic ... ok
[INFO] [stdout] test union_find::quick_union::quick_union_out_of_bounds - should panic ... ok
[INFO] [stdout] test union_find::weighted_quick_union::quick_union_out_of_bounds - should panic ... ok
[INFO] [stdout] test union_find::weighted_quick_union_path_compression::quick_union_out_of_bounds - should panic ... ok
[INFO] [stdout] test union_find::weighted_quick_union_path_compression::quick_union_not_zero - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust-algorithms
[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" "a9a805b77c8cb317e74ab147cd9e25026738450ebe5e81036099883e0c08b0ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9a805b77c8cb317e74ab147cd9e25026738450ebe5e81036099883e0c08b0ba", kill_on_drop: false }`
[INFO] [stdout] a9a805b77c8cb317e74ab147cd9e25026738450ebe5e81036099883e0c08b0ba