[INFO] fetching crate greco 0.1.0...
[INFO] testing greco-0.1.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate greco 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate greco 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate greco 0.1.0
[INFO] tweaked toml for crates.io crate greco 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate greco 0.1.0 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate greco 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cd428a3390cb06ecb779a26219734c7d0aee19a8686e3ddc33b1962005ae724
[INFO] running `Command { std: "docker" "start" "-a" "2cd428a3390cb06ecb779a26219734c7d0aee19a8686e3ddc33b1962005ae724", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cd428a3390cb06ecb779a26219734c7d0aee19a8686e3ddc33b1962005ae724", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cd428a3390cb06ecb779a26219734c7d0aee19a8686e3ddc33b1962005ae724", kill_on_drop: false }`
[INFO] [stdout] 2cd428a3390cb06ecb779a26219734c7d0aee19a8686e3ddc33b1962005ae724
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 8915370fdf1eb03917e0a1e758870be250db5aeb48cc3ed4a074f68a1d1b4011
[INFO] running `Command { std: "docker" "start" "-a" "8915370fdf1eb03917e0a1e758870be250db5aeb48cc3ed4a074f68a1d1b4011", kill_on_drop: false }`
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling greco v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]  --> src/lib.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn o(item: &str) {
[INFO] [stdout]   |          ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "8915370fdf1eb03917e0a1e758870be250db5aeb48cc3ed4a074f68a1d1b4011", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8915370fdf1eb03917e0a1e758870be250db5aeb48cc3ed4a074f68a1d1b4011", kill_on_drop: false }`
[INFO] [stdout] 8915370fdf1eb03917e0a1e758870be250db5aeb48cc3ed4a074f68a1d1b4011
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] d715da20651bce652787e11e02444e25a4119bd9f4ce31a4cd12832eaac0666a
[INFO] running `Command { std: "docker" "start" "-a" "d715da20651bce652787e11e02444e25a4119bd9f4ce31a4cd12832eaac0666a", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]  --> src/lib.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn o(item: &str) {
[INFO] [stdout]   |          ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling greco v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]  --> src/lib.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn o(item: &str) {
[INFO] [stdout]   |          ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "d715da20651bce652787e11e02444e25a4119bd9f4ce31a4cd12832eaac0666a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d715da20651bce652787e11e02444e25a4119bd9f4ce31a4cd12832eaac0666a", kill_on_drop: false }`
[INFO] [stdout] d715da20651bce652787e11e02444e25a4119bd9f4ce31a4cd12832eaac0666a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] da39ac1ccddc76c3463ed816ee524485f52ae804817a27ed4fe97c4e3d09f95a
[INFO] running `Command { std: "docker" "start" "-a" "da39ac1ccddc76c3463ed816ee524485f52ae804817a27ed4fe97c4e3d09f95a", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `item`
[INFO] [stderr]  --> src/lib.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn o(item: &str) {
[INFO] [stderr]   |          ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `greco` (lib) generated 1 warning
[INFO] [stderr] warning: `greco` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/greco-7bf852f34eca8b91)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/tests-4d8c91cd591e28c6)
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test foo1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "da39ac1ccddc76c3463ed816ee524485f52ae804817a27ed4fe97c4e3d09f95a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da39ac1ccddc76c3463ed816ee524485f52ae804817a27ed4fe97c4e3d09f95a", kill_on_drop: false }`
[INFO] [stdout] da39ac1ccddc76c3463ed816ee524485f52ae804817a27ed4fe97c4e3d09f95a