[INFO] fetching crate switcher 0.0.8-alpha...
[INFO] testing switcher-0.0.8-alpha against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate switcher 0.0.8-alpha into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate switcher 0.0.8-alpha
[INFO] finished tweaking crates.io crate switcher 0.0.8-alpha
[INFO] tweaked toml for crates.io crate switcher 0.0.8-alpha written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate switcher 0.0.8-alpha on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate switcher 0.0.8-alpha 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.10
[INFO] [stderr]   Downloaded proc-macro2 v1.0.34
[INFO] [stderr]   Downloaded serde_derive v1.0.132
[INFO] [stderr]   Downloaded syn v1.0.82
[INFO] [stderr]   Downloaded serde v1.0.132
[INFO] [stderr]   Downloaded serde_json v1.0.73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd258d045498e94f18158c25eac499dd515b3f37da60d74060df1737349f51a8
[INFO] running `Command { std: "docker" "start" "-a" "cd258d045498e94f18158c25eac499dd515b3f37da60d74060df1737349f51a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd258d045498e94f18158c25eac499dd515b3f37da60d74060df1737349f51a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd258d045498e94f18158c25eac499dd515b3f37da60d74060df1737349f51a8", kill_on_drop: false }`
[INFO] [stdout] cd258d045498e94f18158c25eac499dd515b3f37da60d74060df1737349f51a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 264f67a93970679edafae8165d414a52b6427d521103b492399b80c8158474bd
[INFO] running `Command { std: "docker" "start" "-a" "264f67a93970679edafae8165d414a52b6427d521103b492399b80c8158474bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling serde_derive v1.0.132
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling serde_json v1.0.73
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling dirs v4.0.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling switcher v0.0.8-alpha (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/commands/projects.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |     let mut project = match config.get_project(&project_name) {
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.35s
[INFO] running `Command { std: "docker" "inspect" "264f67a93970679edafae8165d414a52b6427d521103b492399b80c8158474bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "264f67a93970679edafae8165d414a52b6427d521103b492399b80c8158474bd", kill_on_drop: false }`
[INFO] [stdout] 264f67a93970679edafae8165d414a52b6427d521103b492399b80c8158474bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e77744d04ae254ab8510481404fa3d40dd59ae5471e11eb49149dc5d2ed7234b
[INFO] running `Command { std: "docker" "start" "-a" "e77744d04ae254ab8510481404fa3d40dd59ae5471e11eb49149dc5d2ed7234b", kill_on_drop: false }`
[INFO] [stderr]    Compiling switcher v0.0.8-alpha (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/commands/projects.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |     let mut project = match config.get_project(&project_name) {
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "e77744d04ae254ab8510481404fa3d40dd59ae5471e11eb49149dc5d2ed7234b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e77744d04ae254ab8510481404fa3d40dd59ae5471e11eb49149dc5d2ed7234b", kill_on_drop: false }`
[INFO] [stdout] e77744d04ae254ab8510481404fa3d40dd59ae5471e11eb49149dc5d2ed7234b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9949ab036c40e5b5d03576943a7878522e835fe73ef170d4b8d3359faa4acd68
[INFO] running `Command { std: "docker" "start" "-a" "9949ab036c40e5b5d03576943a7878522e835fe73ef170d4b8d3359faa4acd68", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/commands/projects.rs:154:9
[INFO] [stderr]     |
[INFO] [stderr] 154 |     let mut project = match config.get_project(&project_name) {
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `switcher` (bin "switcher" test) generated 1 warning (run `cargo fix --bin "switcher" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/switcher-95c7e318e82f0651)
[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" "9949ab036c40e5b5d03576943a7878522e835fe73ef170d4b8d3359faa4acd68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9949ab036c40e5b5d03576943a7878522e835fe73ef170d4b8d3359faa4acd68", kill_on_drop: false }`
[INFO] [stdout] 9949ab036c40e5b5d03576943a7878522e835fe73ef170d4b8d3359faa4acd68