[INFO] fetching crate quick-calc 0.3.0...
[INFO] testing quick-calc-0.3.0 against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296
[INFO] extracting crate quick-calc 0.3.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate quick-calc 0.3.0 on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate quick-calc 0.3.0
[INFO] finished tweaking crates.io crate quick-calc 0.3.0
[INFO] tweaked toml for crates.io crate quick-calc 0.3.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5701074c6a8cb213ddc07d5106af15419be8cb8e0adf8ed2711421191d57349e
[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" "5701074c6a8cb213ddc07d5106af15419be8cb8e0adf8ed2711421191d57349e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5701074c6a8cb213ddc07d5106af15419be8cb8e0adf8ed2711421191d57349e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5701074c6a8cb213ddc07d5106af15419be8cb8e0adf8ed2711421191d57349e", kill_on_drop: false }`
[INFO] [stdout] 5701074c6a8cb213ddc07d5106af15419be8cb8e0adf8ed2711421191d57349e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0526f50b03f766cd84b1ea006b87254cf7aa4d94e76e1801e1bd433406bc708b
[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" "0526f50b03f766cd84b1ea006b87254cf7aa4d94e76e1801e1bd433406bc708b", kill_on_drop: false }`
[INFO] [stderr]    Compiling quick-calc v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "0526f50b03f766cd84b1ea006b87254cf7aa4d94e76e1801e1bd433406bc708b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0526f50b03f766cd84b1ea006b87254cf7aa4d94e76e1801e1bd433406bc708b", kill_on_drop: false }`
[INFO] [stdout] 0526f50b03f766cd84b1ea006b87254cf7aa4d94e76e1801e1bd433406bc708b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "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] 47c109e0d25a1d4d6bef0f413d569fe74dfc90a931b540c5ce8c00e30925a345
[INFO] running `Command { std: "docker" "start" "-a" "47c109e0d25a1d4d6bef0f413d569fe74dfc90a931b540c5ce8c00e30925a345", kill_on_drop: false }`
[INFO] [stderr]    Compiling quick-calc v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/operations.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let mut db_dec: String;
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/operations.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let mut db_hex: String;
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/operations.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let mut db_oct: String;
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/operations.rs:143:13
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let mut db_bin: String;
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "47c109e0d25a1d4d6bef0f413d569fe74dfc90a931b540c5ce8c00e30925a345", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47c109e0d25a1d4d6bef0f413d569fe74dfc90a931b540c5ce8c00e30925a345", kill_on_drop: false }`
[INFO] [stdout] 47c109e0d25a1d4d6bef0f413d569fe74dfc90a931b540c5ce8c00e30925a345
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 13f3f6f76047fa0b91a4709efe187ff08bb316e750a9f195fa915c8f2fd9a54a
[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" "13f3f6f76047fa0b91a4709efe187ff08bb316e750a9f195fa915c8f2fd9a54a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] running 4 tests
[INFO] [stderr]    --> src/operations.rs:140:13
[INFO] [stdout] test operations::tests::test_strip_prefix ... ok
[INFO] [stderr]     |
[INFO] [stdout] test operations::tests::test_calculate_char_length ... ok
[INFO] [stderr] 140 |         let mut db_dec: String;
[INFO] [stdout] test operations::tests::test_swap ... ok
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stdout] test operations::tests::test_get_char_length ... ok
[INFO] [stderr]     |             |
[INFO] [stdout] 
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/operations.rs:141:13
[INFO] [stderr]     |
[INFO] [stderr] 141 |         let mut db_hex: String;
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/operations.rs:142:13
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let mut db_oct: String;
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/operations.rs:143:13
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let mut db_bin: String;
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/quick_calc-32ccf771d264726d
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/qcal-77deef0d8a5f74ee
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests quick-calc
[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" "13f3f6f76047fa0b91a4709efe187ff08bb316e750a9f195fa915c8f2fd9a54a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13f3f6f76047fa0b91a4709efe187ff08bb316e750a9f195fa915c8f2fd9a54a", kill_on_drop: false }`
[INFO] [stdout] 13f3f6f76047fa0b91a4709efe187ff08bb316e750a9f195fa915c8f2fd9a54a