[INFO] fetching crate aprender-mcp 0.50.0...
[INFO] fixing aprender-mcp-0.50.0 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=end=2015,2024 for pr-157817-2
[INFO] extracting crate aprender-mcp 0.50.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate aprender-mcp 0.50.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate aprender-mcp 0.50.0
[INFO] tweaked toml for crates.io crate aprender-mcp 0.50.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate aprender-mcp 0.50.0 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate aprender-mcp 0.50.0 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 2ea684dd5e4e15977e4f2131ebfd651b13b4707772be3f467b82d922f903bd5f
[INFO] running `Command { std: "docker" "start" "2ea684dd5e4e15977e4f2131ebfd651b13b4707772be3f467b82d922f903bd5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2ea684dd5e4e15977e4f2131ebfd651b13b4707772be3f467b82d922f903bd5f" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ea684dd5e4e15977e4f2131ebfd651b13b4707772be3f467b82d922f903bd5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2ea684dd5e4e15977e4f2131ebfd651b13b4707772be3f467b82d922f903bd5f" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=end=2015,2024", kill_on_drop: false }`
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[INFO] [stderr]    Compiling aprender-mcp v0.50.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Migrating build.rs from 2021 edition to 2024
[INFO] [stderr]     Checking jsonschema v0.28.3
[INFO] [stderr]    Migrating src/lib.rs from 2021 edition to 2024
[INFO] [stderr]        Fixed src/server.rs (1 fix)
[INFO] [stdout] warning: relative drop order changing in Rust 2024
[INFO] [stdout]    --> src/server.rs:254:15
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let mut guard = in_flight
[INFO] [stdout]     |             ---------
[INFO] [stdout]     |             |
[INFO] [stdout]     |             `guard` calls a custom destructor
[INFO] [stdout]     |             `guard` will be dropped later as of Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 254 |         match guard.remove(id) { Some(handle) => {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |               |
[INFO] [stdout]     |               this value will be stored in a temporary; let us call it `#1`
[INFO] [stdout]     |               up until Edition 2021 `#1` is dropped last but will be dropped earlier in Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 262 |     }
[INFO] [stdout]     |     - now the temporary value is dropped here, before the local variables in the block or statement
[INFO] [stdout]     |
[INFO] [stdout] note: `#1` invokes this custom destructor
[INFO] [stdout]    --> /rustc/622891a4e29178280638a6b63a8908bde2c0c854/library/std/src/sync/mpmc/mod.rs:657:0
[INFO] [stdout] note: `guard` invokes this custom destructor
[INFO] [stdout]    --> /rustc/622891a4e29178280638a6b63a8908bde2c0c854/library/std/src/sync/poison/mutex.rs:741:0
[INFO] [stdout]     = note: most of the time, changing drop order is harmless; inspect the `impl Drop`s for side effects like releasing locks or sending messages
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/temporary-tail-expr-scope.html>
[INFO] [stdout]     = note: `--force-warn tail-expr-drop-order` implied by `--force-warn rust-2024-compatibility`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed src/tools/registry.rs (1 fix)
[INFO] [stderr]    Migrating tests/falsify_mcp_dogfood_001.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating tests/falsify_mcp_003.rs from 2021 edition to 2024
[INFO] [stderr]        Fixed tests/falsify_mcp_003.rs (3 fixes)
[INFO] [stderr]    Migrating tests/falsify_mcp_008.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating tests/falsify_inventory_003.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating tests/falsify_schema.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating tests/falsify_mcp_006.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating tests/falsify_inventory_002.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating tests/falsify_inventory_001.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating tests/falsify_mcp_004.rs from 2021 edition to 2024
[INFO] [stderr]        Fixed tests/falsify_mcp_004.rs (3 fixes)
[INFO] [stderr]    Migrating tests/falsify_mcp_progress_001.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating tests/falsify_m1.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating tests/falsify_mcp_e2e_001.rs from 2021 edition to 2024
[INFO] [stdout] warning: relative drop order changing in Rust 2024
[INFO] [stdout]    --> src/server.rs:254:15
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let mut guard = in_flight
[INFO] [stdout]     |             ---------
[INFO] [stdout]     |             |
[INFO] [stdout]     |             `guard` calls a custom destructor
[INFO] [stdout]     |             `guard` will be dropped later as of Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 254 |         match guard.remove(id) { Some(handle) => {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |               |
[INFO] [stdout]     |               this value will be stored in a temporary; let us call it `#1`
[INFO] [stdout]     |               up until Edition 2021 `#1` is dropped last but will be dropped earlier in Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 262 |     }
[INFO] [stdout]     |     - now the temporary value is dropped here, before the local variables in the block or statement
[INFO] [stdout]     |
[INFO] [stdout] note: `#1` invokes this custom destructor
[INFO] [stdout]    --> /rustc/622891a4e29178280638a6b63a8908bde2c0c854/library/std/src/sync/mpmc/mod.rs:657:0
[INFO] [stdout] note: `guard` invokes this custom destructor
[INFO] [stdout]    --> /rustc/622891a4e29178280638a6b63a8908bde2c0c854/library/std/src/sync/poison/mutex.rs:741:0
[INFO] [stdout]     = note: most of the time, changing drop order is harmless; inspect the `impl Drop`s for side effects like releasing locks or sending messages
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/temporary-tail-expr-scope.html>
[INFO] [stdout]     = note: `--force-warn tail-expr-drop-order` implied by `--force-warn rust-2024-compatibility`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating tests/falsify_mcp_progress_002.rs from 2021 edition to 2024
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 45.00s
[INFO] [stderr] crater-edition-check: aprender-mcp v0.50.0 (/opt/rustwide/workdir) updating edition from 2021 to 2024
[INFO] [stderr]    Compiling aprender-mcp v0.50.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: usage of an `unsafe` block
[INFO] [stdout]    --> tests/falsify_mcp_003.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |         unsafe { std::env::set_var("PATH", new_path) };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unsafe-code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: usage of an `unsafe` block
[INFO] [stdout]    --> tests/falsify_mcp_003.rs:135:24
[INFO] [stdout]     |
[INFO] [stdout] 135 |             Some(v) => unsafe { std::env::set_var("PATH", v) },
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: usage of an `unsafe` block
[INFO] [stdout]    --> tests/falsify_mcp_003.rs:137:21
[INFO] [stdout]     |
[INFO] [stdout] 137 |             None => unsafe { std::env::remove_var("PATH") },
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: usage of an `unsafe` block
[INFO] [stdout]    --> tests/falsify_mcp_004.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |         unsafe { std::env::set_var("PATH", new_path) };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unsafe-code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: usage of an `unsafe` block
[INFO] [stdout]    --> tests/falsify_mcp_004.rs:149:24
[INFO] [stdout]     |
[INFO] [stdout] 149 |             Some(v) => unsafe { std::env::set_var("PATH", v) },
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: usage of an `unsafe` block
[INFO] [stdout]    --> tests/falsify_mcp_004.rs:151:21
[INFO] [stdout]     |
[INFO] [stdout] 151 |             None => unsafe { std::env::remove_var("PATH") },
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aprender-mcp` (test "falsify_mcp_003") due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `aprender-mcp` (test "falsify_mcp_004") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "2ea684dd5e4e15977e4f2131ebfd651b13b4707772be3f467b82d922f903bd5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ea684dd5e4e15977e4f2131ebfd651b13b4707772be3f467b82d922f903bd5f", kill_on_drop: false }`
[INFO] [stdout] 2ea684dd5e4e15977e4f2131ebfd651b13b4707772be3f467b82d922f903bd5f
