[INFO] fetching crate kalgan_config 0.9.1...
[INFO] testing kalgan_config-0.9.1 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate kalgan_config 0.9.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate kalgan_config 0.9.1
[INFO] finished tweaking crates.io crate kalgan_config 0.9.1
[INFO] tweaked toml for crates.io crate kalgan_config 0.9.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate kalgan_config 0.9.1 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to latest compatible versions
[INFO] [stderr]       Adding serde_yaml v0.8.26 (available: v0.9.34+deprecated)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68d3c766558f27f75ca5535fc3ca363f83a72e6c65d259376d432703d90f2234
[INFO] running `Command { std: "docker" "start" "-a" "68d3c766558f27f75ca5535fc3ca363f83a72e6c65d259376d432703d90f2234", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68d3c766558f27f75ca5535fc3ca363f83a72e6c65d259376d432703d90f2234", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68d3c766558f27f75ca5535fc3ca363f83a72e6c65d259376d432703d90f2234", kill_on_drop: false }`
[INFO] [stdout] 68d3c766558f27f75ca5535fc3ca363f83a72e6c65d259376d432703d90f2234
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c9072cbabebd229992cf26d161018f49deda2a1f6167b79e63410c74c5932f2
[INFO] running `Command { std: "docker" "start" "-a" "8c9072cbabebd229992cf26d161018f49deda2a1f6167b79e63410c74c5932f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling serde_yaml v0.8.26
[INFO] [stderr]    Compiling kalgan_config v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/parameters.rs:77:20
[INFO] [stdout]    |
[INFO] [stdout] 77 |     for element in map.as_mapping() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 77 -     for element in map.as_mapping() {
[INFO] [stdout] 77 +     while let Some(element) = map.as_mapping() {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 77 -     for element in map.as_mapping() {
[INFO] [stdout] 77 +     if let Some(element) = map.as_mapping() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.67s
[INFO] running `Command { std: "docker" "inspect" "8c9072cbabebd229992cf26d161018f49deda2a1f6167b79e63410c74c5932f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c9072cbabebd229992cf26d161018f49deda2a1f6167b79e63410c74c5932f2", kill_on_drop: false }`
[INFO] [stdout] 8c9072cbabebd229992cf26d161018f49deda2a1f6167b79e63410c74c5932f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd5f9f23d10fa64635536d2e187371887e4d30dc32a42568391d6ea206fa4118
[INFO] running `Command { std: "docker" "start" "-a" "fd5f9f23d10fa64635536d2e187371887e4d30dc32a42568391d6ea206fa4118", kill_on_drop: false }`
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/parameters.rs:77:20
[INFO] [stdout]    |
[INFO] [stdout] 77 |     for element in map.as_mapping() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 77 -     for element in map.as_mapping() {
[INFO] [stdout] 77 +     while let Some(element) = map.as_mapping() {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 77 -     for element in map.as_mapping() {
[INFO] [stdout] 77 +     if let Some(element) = map.as_mapping() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling kalgan_config v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/parameters.rs:77:20
[INFO] [stdout]    |
[INFO] [stdout] 77 |     for element in map.as_mapping() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 77 -     for element in map.as_mapping() {
[INFO] [stdout] 77 +     while let Some(element) = map.as_mapping() {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 77 -     for element in map.as_mapping() {
[INFO] [stdout] 77 +     if let Some(element) = map.as_mapping() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "fd5f9f23d10fa64635536d2e187371887e4d30dc32a42568391d6ea206fa4118", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd5f9f23d10fa64635536d2e187371887e4d30dc32a42568391d6ea206fa4118", kill_on_drop: false }`
[INFO] [stdout] fd5f9f23d10fa64635536d2e187371887e4d30dc32a42568391d6ea206fa4118
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b622f39d003569214374962741f59c4f44d4524e58aee6a7bda71f2e08675052
[INFO] running `Command { std: "docker" "start" "-a" "b622f39d003569214374962741f59c4f44d4524e58aee6a7bda71f2e08675052", kill_on_drop: false }`
[INFO] [stderr] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stderr]   --> src/parameters.rs:77:20
[INFO] [stderr]    |
[INFO] [stderr] 77 |     for element in map.as_mapping() {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stderr] help: to check pattern in a loop use `while let`
[INFO] [stderr]    |
[INFO] [stderr] 77 -     for element in map.as_mapping() {
[INFO] [stderr] 77 +     while let Some(element) = map.as_mapping() {
[INFO] [stderr]    |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]    |
[INFO] [stderr] 77 -     for element in map.as_mapping() {
[INFO] [stderr] 77 +     if let Some(element) = map.as_mapping() {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `kalgan_config` (lib) generated 1 warning
[INFO] [stderr] warning: `kalgan_config` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/kalgan_config-aed32260af879469)
[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]    Doc-tests kalgan_config
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - Config::get_vec (line 106) ... ok
[INFO] [stdout] test src/lib.rs - Config::get_number (line 80) ... ok
[INFO] [stdout] test src/lib.rs - Config::new (line 30) ... ok
[INFO] [stdout] test src/lib.rs - Config::get_bool (line 67) ... ok
[INFO] [stdout] test src/lib.rs - Config::get_float (line 93) ... ok
[INFO] [stdout] test src/lib.rs - Config::get_string (line 54) ... ok
[INFO] [stdout] test src/lib.rs - Config::get (line 40) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.05s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b622f39d003569214374962741f59c4f44d4524e58aee6a7bda71f2e08675052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b622f39d003569214374962741f59c4f44d4524e58aee6a7bda71f2e08675052", kill_on_drop: false }`
[INFO] [stdout] b622f39d003569214374962741f59c4f44d4524e58aee6a7bda71f2e08675052