[INFO] fetching crate akumi 0.1.0...
[INFO] testing akumi-0.1.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate akumi 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate akumi 0.1.0
[INFO] finished tweaking crates.io crate akumi 0.1.0
[INFO] tweaked toml for crates.io crate akumi 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate akumi 0.1.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate akumi 0.1.0 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7fbc36efd2b090fed4e7ee752e2565b0974ebbd4ad6f029c4ca41e4ea12883e
[INFO] running `Command { std: "docker" "start" "-a" "f7fbc36efd2b090fed4e7ee752e2565b0974ebbd4ad6f029c4ca41e4ea12883e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7fbc36efd2b090fed4e7ee752e2565b0974ebbd4ad6f029c4ca41e4ea12883e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7fbc36efd2b090fed4e7ee752e2565b0974ebbd4ad6f029c4ca41e4ea12883e", kill_on_drop: false }`
[INFO] [stdout] f7fbc36efd2b090fed4e7ee752e2565b0974ebbd4ad6f029c4ca41e4ea12883e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4e393f0981e21b6e1bea5a8b8e620124863b435d15cbe41eca22fc54a4bc2fa
[INFO] running `Command { std: "docker" "start" "-a" "a4e393f0981e21b6e1bea5a8b8e620124863b435d15cbe41eca22fc54a4bc2fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.6.3
[INFO] [stderr]    Compiling regex-syntax v0.7.5
[INFO] [stderr]    Compiling aho-corasick v1.1.1
[INFO] [stderr]    Compiling regex-automata v0.3.9
[INFO] [stderr]    Compiling regex v1.9.6
[INFO] [stderr]    Compiling akumi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/main.rs:27:20
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 if let Ok(file) = args[index + 1].parse::<String>() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.54s
[INFO] running `Command { std: "docker" "inspect" "a4e393f0981e21b6e1bea5a8b8e620124863b435d15cbe41eca22fc54a4bc2fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4e393f0981e21b6e1bea5a8b8e620124863b435d15cbe41eca22fc54a4bc2fa", kill_on_drop: false }`
[INFO] [stdout] a4e393f0981e21b6e1bea5a8b8e620124863b435d15cbe41eca22fc54a4bc2fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09b4f52feff26155fbc7f27bcb7243a55202996747aad8cfad8e87dedc78e3bb
[INFO] running `Command { std: "docker" "start" "-a" "09b4f52feff26155fbc7f27bcb7243a55202996747aad8cfad8e87dedc78e3bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling akumi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/main.rs:27:20
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 if let Ok(file) = args[index + 1].parse::<String>() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "09b4f52feff26155fbc7f27bcb7243a55202996747aad8cfad8e87dedc78e3bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09b4f52feff26155fbc7f27bcb7243a55202996747aad8cfad8e87dedc78e3bb", kill_on_drop: false }`
[INFO] [stdout] 09b4f52feff26155fbc7f27bcb7243a55202996747aad8cfad8e87dedc78e3bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5d48c55ef0700224e6fd4c43d147534e840eb1812f8e20a4082fd6df0153965e
[INFO] running `Command { std: "docker" "start" "-a" "5d48c55ef0700224e6fd4c43d147534e840eb1812f8e20a4082fd6df0153965e", kill_on_drop: false }`
[INFO] [stderr] warning: irrefutable `if let` pattern
[INFO] [stderr]   --> src/main.rs:27:20
[INFO] [stderr]    |
[INFO] [stderr] 27 |                 if let Ok(file) = args[index + 1].parse::<String>() {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stderr]    = help: consider replacing the `if let` with a `let`
[INFO] [stderr]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `akumi` (bin "akumi" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/akumi-8a30150beb4446cd)
[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" "5d48c55ef0700224e6fd4c43d147534e840eb1812f8e20a4082fd6df0153965e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d48c55ef0700224e6fd4c43d147534e840eb1812f8e20a4082fd6df0153965e", kill_on_drop: false }`
[INFO] [stdout] 5d48c55ef0700224e6fd4c43d147534e840eb1812f8e20a4082fd6df0153965e