[INFO] cloning repository https://github.com/keuin/KBackup-cow
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/keuin/KBackup-cow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeuin%2FKBackup-cow", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeuin%2FKBackup-cow'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e3d0f924a416365ea12d8ace8569664cbb09dba5
[INFO] checking keuin/KBackup-cow against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeuin%2FKBackup-cow" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/keuin/KBackup-cow on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/keuin/KBackup-cow
[INFO] finished tweaking git repo https://github.com/keuin/KBackup-cow
[INFO] tweaked toml for git repo https://github.com/keuin/KBackup-cow written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/keuin/KBackup-cow 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62831181db68fcc7d3e1812ace27794aefbb04db6e9801cabf574ac58b0ff853
[INFO] running `Command { std: "docker" "start" "-a" "62831181db68fcc7d3e1812ace27794aefbb04db6e9801cabf574ac58b0ff853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62831181db68fcc7d3e1812ace27794aefbb04db6e9801cabf574ac58b0ff853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62831181db68fcc7d3e1812ace27794aefbb04db6e9801cabf574ac58b0ff853", kill_on_drop: false }`
[INFO] [stdout] 62831181db68fcc7d3e1812ace27794aefbb04db6e9801cabf574ac58b0ff853
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70a5d12e515ed95b567d62fbbbee68c547da86e583f283f6f98f07b57287f406
[INFO] running `Command { std: "docker" "start" "-a" "70a5d12e515ed95b567d62fbbbee68c547da86e583f283f6f98f07b57287f406", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking bitflags v2.4.2
[INFO] [stderr]    Compiling rustix v0.38.30
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking combine v4.6.6
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking jni-sys v0.3.0
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking is-terminal v0.4.10
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking jni v0.21.1
[INFO] [stderr]     Checking kbackup-cow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/lib/lib.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::fmt::{Formatter, Write};
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/lib/lib.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::fmt::{Formatter, Write};
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `throw` is never used
[INFO] [stdout]   --> src/lib/lib.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn throw<S: Into<JNIString>>(env: &mut JNIEnv, msg: S) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `throw` is never used
[INFO] [stdout]   --> src/lib/lib.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn throw<S: Into<JNIString>>(env: &mut JNIEnv, msg: S) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.37s
[INFO] running `Command { std: "docker" "inspect" "70a5d12e515ed95b567d62fbbbee68c547da86e583f283f6f98f07b57287f406", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70a5d12e515ed95b567d62fbbbee68c547da86e583f283f6f98f07b57287f406", kill_on_drop: false }`
[INFO] [stdout] 70a5d12e515ed95b567d62fbbbee68c547da86e583f283f6f98f07b57287f406