[INFO] fetching crate file_transfer 0.1.1...
[INFO] testing file_transfer-0.1.1 against beta-2026-01-20 for beta-1.94-1
[INFO] extracting crate file_transfer 0.1.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate file_transfer 0.1.1
[INFO] finished tweaking crates.io crate file_transfer 0.1.1
[INFO] tweaked toml for crates.io crate file_transfer 0.1.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate file_transfer 0.1.1 on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate file_transfer 0.1.1 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" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c7961823f3f327c1a8d237d5644c8a7e5280b181c68c9120d55c6bd1168891e
[INFO] running `Command { std: "docker" "start" "-a" "2c7961823f3f327c1a8d237d5644c8a7e5280b181c68c9120d55c6bd1168891e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c7961823f3f327c1a8d237d5644c8a7e5280b181c68c9120d55c6bd1168891e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c7961823f3f327c1a8d237d5644c8a7e5280b181c68c9120d55c6bd1168891e", kill_on_drop: false }`
[INFO] [stdout] 2c7961823f3f327c1a8d237d5644c8a7e5280b181c68c9120d55c6bd1168891e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a30aafa4f5ed2a0a72226e4df7b3bf9b194e6ea0d30f09ff3def89d623e7dc98
[INFO] running `Command { std: "docker" "start" "-a" "a30aafa4f5ed2a0a72226e4df7b3bf9b194e6ea0d30f09ff3def89d623e7dc98", kill_on_drop: false }`
[INFO] [stderr]    Compiling file_transfer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/ftp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> src/ftp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "a30aafa4f5ed2a0a72226e4df7b3bf9b194e6ea0d30f09ff3def89d623e7dc98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a30aafa4f5ed2a0a72226e4df7b3bf9b194e6ea0d30f09ff3def89d623e7dc98", kill_on_drop: false }`
[INFO] [stdout] a30aafa4f5ed2a0a72226e4df7b3bf9b194e6ea0d30f09ff3def89d623e7dc98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71852a6e87cc5c72a6bbd02011087328257b53f1c834c9601a4e537f0e96a63e
[INFO] running `Command { std: "docker" "start" "-a" "71852a6e87cc5c72a6bbd02011087328257b53f1c834c9601a4e537f0e96a63e", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/ftp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> src/ftp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling file_transfer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/ftp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> src/ftp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "71852a6e87cc5c72a6bbd02011087328257b53f1c834c9601a4e537f0e96a63e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71852a6e87cc5c72a6bbd02011087328257b53f1c834c9601a4e537f0e96a63e", kill_on_drop: false }`
[INFO] [stdout] 71852a6e87cc5c72a6bbd02011087328257b53f1c834c9601a4e537f0e96a63e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2beb3b010b8fab89b2cdd103eec0885b5b6b5ee978e20fea1bb48fd814ce0b99
[INFO] running `Command { std: "docker" "start" "-a" "2beb3b010b8fab89b2cdd103eec0885b5b6b5ee978e20fea1bb48fd814ce0b99", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/ftp.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]  --> src/ftp.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `file_transfer` (lib) generated 2 warnings (run `cargo fix --lib -p file_transfer` to apply 2 suggestions)
[INFO] [stderr] warning: `file_transfer` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/file_transfer-1f83a4596fc8b333)
[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] [stderr]      Running unittests src/bin/client_main.rs (/opt/rustwide/target/debug/deps/client_main-73b2e640a617d8b3)
[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] [stderr]      Running unittests src/bin/host_main.rs (/opt/rustwide/target/debug/deps/host_main-b8c48ff06d718985)
[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] [stderr]    Doc-tests file_transfer
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/ftp.rs - ftp::FTP::get_ip_file (line 95) ... FAILED
[INFO] [stdout] test src/ftp.rs - ftp::FTP::recv (line 67) ... FAILED
[INFO] [stdout] test src/ftp.rs - ftp::FTP::new (line 25) ... FAILED
[INFO] [stdout] test src/ftp.rs - ftp::FTP::send (line 43) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/ftp.rs - ftp::FTP::get_ip_file (line 95) stdout ----
[INFO] [stdout] error[E0425]: cannot find type `File` in this scope
[INFO] [stdout]   --> src/ftp.rs:96:11
[INFO] [stdout]    |
[INFO] [stdout] 96 | let file: File = ftp.get_ip_file();
[INFO] [stdout]    |           ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 95 + use std::fs::File;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `ftp` in this scope
[INFO] [stdout]   --> src/ftp.rs:96:18
[INFO] [stdout]    |
[INFO] [stdout] 96 | let file: File = ftp.get_ip_file();
[INFO] [stdout]    |                  ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/ftp.rs - ftp::FTP::recv (line 67) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `FTP`
[INFO] [stdout]   --> src/ftp.rs:68:11
[INFO] [stdout]    |
[INFO] [stdout] 68 | let ftp = FTP::new("127.0.0.1:8080", File::create("/home/user/file.txt"));
[INFO] [stdout]    |           ^^^ use of undeclared type `FTP`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]    |
[INFO] [stdout] 67 + use file_transfer::ftp::FTP;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `File`
[INFO] [stdout]   --> src/ftp.rs:68:38
[INFO] [stdout]    |
[INFO] [stdout] 68 | let ftp = FTP::new("127.0.0.1:8080", File::create("/home/user/file.txt"));
[INFO] [stdout]    |                                      ^^^^ use of undeclared type `File`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 67 + use std::fs::File;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/ftp.rs - ftp::FTP::new (line 25) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `FTP`
[INFO] [stdout]   --> src/ftp.rs:26:11
[INFO] [stdout]    |
[INFO] [stdout] 26 | let ftp = FTP::new("127.0.0.1:8080", File::create("/home/user/file.txt"));
[INFO] [stdout]    |           ^^^ use of undeclared type `FTP`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]    |
[INFO] [stdout] 25 + use file_transfer::ftp::FTP;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `File`
[INFO] [stdout]   --> src/ftp.rs:26:38
[INFO] [stdout]    |
[INFO] [stdout] 26 | let ftp = FTP::new("127.0.0.1:8080", File::create("/home/user/file.txt"));
[INFO] [stdout]    |                                      ^^^^ use of undeclared type `File`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 25 + use std::fs::File;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/ftp.rs - ftp::FTP::send (line 43) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `FTP`
[INFO] [stdout]   --> src/ftp.rs:44:11
[INFO] [stdout]    |
[INFO] [stdout] 44 | let ftp = FTP::new("127.0.0.1:8080", File::create("/home/user/file.txt"));
[INFO] [stdout]    |           ^^^ use of undeclared type `FTP`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]    |
[INFO] [stdout] 43 + use file_transfer::ftp::FTP;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `File`
[INFO] [stdout]   --> src/ftp.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 | let ftp = FTP::new("127.0.0.1:8080", File::create("/home/user/file.txt"));
[INFO] [stdout]    |                                      ^^^^ use of undeclared type `File`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 43 + use std::fs::File;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/ftp.rs - ftp::FTP::get_ip_file (line 95)
[INFO] [stdout]     src/ftp.rs - ftp::FTP::new (line 25)
[INFO] [stdout]     src/ftp.rs - ftp::FTP::recv (line 67)
[INFO] [stdout]     src/ftp.rs - ftp::FTP::send (line 43)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.24s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "2beb3b010b8fab89b2cdd103eec0885b5b6b5ee978e20fea1bb48fd814ce0b99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2beb3b010b8fab89b2cdd103eec0885b5b6b5ee978e20fea1bb48fd814ce0b99", kill_on_drop: false }`
[INFO] [stdout] 2beb3b010b8fab89b2cdd103eec0885b5b6b5ee978e20fea1bb48fd814ce0b99
