[INFO] cloning repository https://github.com/0xfalafel/stack_switcher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0xfalafel/stack_switcher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xfalafel%2Fstack_switcher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xfalafel%2Fstack_switcher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae2b4eb7a5bb3d1126f38c31e04eaf8305cf6023
[INFO] testing 0xfalafel/stack_switcher against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xfalafel%2Fstack_switcher" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/0xfalafel/stack_switcher
[INFO] finished tweaking git repo https://github.com/0xfalafel/stack_switcher
[INFO] tweaked toml for git repo https://github.com/0xfalafel/stack_switcher written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/0xfalafel/stack_switcher on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/0xfalafel/stack_switcher 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" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4b760e824b972bfb6711afa53c3fdbe90cd35b7755127d340322164af6763b4
[INFO] running `Command { std: "docker" "start" "-a" "f4b760e824b972bfb6711afa53c3fdbe90cd35b7755127d340322164af6763b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4b760e824b972bfb6711afa53c3fdbe90cd35b7755127d340322164af6763b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4b760e824b972bfb6711afa53c3fdbe90cd35b7755127d340322164af6763b4", kill_on_drop: false }`
[INFO] [stdout] f4b760e824b972bfb6711afa53c3fdbe90cd35b7755127d340322164af6763b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a07e29f5600f0fd976a5fba0288a7ca3fa5f8c581d77570975501132f4c6e87b
[INFO] running `Command { std: "docker" "start" "-a" "a07e29f5600f0fd976a5fba0288a7ca3fa5f8c581d77570975501132f4c6e87b", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling hashbrown v0.15.2
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling winnow v0.7.6
[INFO] [stderr]    Compiling target-lexicon v0.12.16
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling smallvec v1.15.0
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]    Compiling version-compare v0.2.0
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling cfg-expr v0.17.2
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling bitflags v2.9.0
[INFO] [stderr]    Compiling gio v0.20.9
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling relm4-css v0.9.0
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling nanorand v0.7.0
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling flume v0.11.1
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling tokio v1.44.2
[INFO] [stderr]    Compiling fragile v2.0.1
[INFO] [stderr]    Compiling field-offset v0.3.6
[INFO] [stderr]    Compiling serde_spanned v0.6.8
[INFO] [stderr]    Compiling toml_datetime v0.6.8
[INFO] [stderr]    Compiling toml_edit v0.22.24
[INFO] [stderr]    Compiling toml v0.8.20
[INFO] [stderr]    Compiling proc-macro-crate v3.3.0
[INFO] [stderr]    Compiling system-deps v7.0.3
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling glib-macros v0.20.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling gtk4-macros v0.9.5
[INFO] [stderr]    Compiling relm4-macros v0.9.1
[INFO] [stderr]    Compiling tracker-macros v0.2.2
[INFO] [stderr]    Compiling tracker v0.2.2
[INFO] [stderr]    Compiling glib-sys v0.20.9
[INFO] [stderr]    Compiling gobject-sys v0.20.9
[INFO] [stderr]    Compiling gio-sys v0.20.9
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.20.7
[INFO] [stderr]    Compiling pango-sys v0.20.9
[INFO] [stderr]    Compiling cairo-sys-rs v0.20.7
[INFO] [stderr]    Compiling graphene-sys v0.20.7
[INFO] [stderr]    Compiling gdk4-sys v0.9.6
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling gsk4-sys v0.9.6
[INFO] [stderr]    Compiling gtk4-sys v0.9.6
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling glib v0.20.9
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling cairo-rs v0.20.7
[INFO] [stderr]    Compiling graphene-rs v0.20.9
[INFO] [stderr]    Compiling gdk-pixbuf v0.20.9
[INFO] [stderr]    Compiling pango v0.20.9
[INFO] [stderr]    Compiling gdk4 v0.9.6
[INFO] [stderr]    Compiling gsk4 v0.9.6
[INFO] [stderr]    Compiling gtk4 v0.9.6
[INFO] [stderr]    Compiling relm4 v0.9.1
[INFO] [stderr]    Compiling relm4-components v0.9.1
[INFO] [stderr]    Compiling stack_switcher v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `stack` is never read
[INFO] [stdout]   --> src/main.rs:39:22
[INFO] [stdout]    |
[INFO] [stdout] 39 |             #[name = "stack"]
[INFO] [stdout]    |                      ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 23s
[INFO] running `Command { std: "docker" "inspect" "a07e29f5600f0fd976a5fba0288a7ca3fa5f8c581d77570975501132f4c6e87b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a07e29f5600f0fd976a5fba0288a7ca3fa5f8c581d77570975501132f4c6e87b", kill_on_drop: false }`
[INFO] [stdout] a07e29f5600f0fd976a5fba0288a7ca3fa5f8c581d77570975501132f4c6e87b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68ad45a0d275619813c003c084959ee8984577bbce10964de886e12de3ef8828
[INFO] running `Command { std: "docker" "start" "-a" "68ad45a0d275619813c003c084959ee8984577bbce10964de886e12de3ef8828", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack_switcher v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `stack` is never read
[INFO] [stdout]   --> src/main.rs:39:22
[INFO] [stdout]    |
[INFO] [stdout] 39 |             #[name = "stack"]
[INFO] [stdout]    |                      ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "68ad45a0d275619813c003c084959ee8984577bbce10964de886e12de3ef8828", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68ad45a0d275619813c003c084959ee8984577bbce10964de886e12de3ef8828", kill_on_drop: false }`
[INFO] [stdout] 68ad45a0d275619813c003c084959ee8984577bbce10964de886e12de3ef8828
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e7c4314f3f745d4d7413bb0693509aa2a9a9fcb0d58e712add324b8ad6e22651
[INFO] running `Command { std: "docker" "start" "-a" "e7c4314f3f745d4d7413bb0693509aa2a9a9fcb0d58e712add324b8ad6e22651", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `stack` is never read
[INFO] [stderr]   --> src/main.rs:39:22
[INFO] [stderr]    |
[INFO] [stderr] 39 |             #[name = "stack"]
[INFO] [stderr]    |                      ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `stack_switcher` (bin "stack_switcher" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/stack_switcher-dcfa67521ae3dfd4)
[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" "e7c4314f3f745d4d7413bb0693509aa2a9a9fcb0d58e712add324b8ad6e22651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7c4314f3f745d4d7413bb0693509aa2a9a9fcb0d58e712add324b8ad6e22651", kill_on_drop: false }`
[INFO] [stdout] e7c4314f3f745d4d7413bb0693509aa2a9a9fcb0d58e712add324b8ad6e22651
