[INFO] fetching crate frum 0.1.2...
[INFO] checking frum-0.1.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate frum 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate frum 0.1.2
[INFO] finished tweaking crates.io crate frum 0.1.2
[INFO] tweaked toml for crates.io crate frum 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate frum 0.1.2 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate frum 0.1.2 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 742d23866a15f0c4e37597d9e2f32ceaefa046ebbf436855cd0da244012f7d19
[INFO] running `Command { std: "docker" "start" "-a" "742d23866a15f0c4e37597d9e2f32ceaefa046ebbf436855cd0da244012f7d19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "742d23866a15f0c4e37597d9e2f32ceaefa046ebbf436855cd0da244012f7d19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "742d23866a15f0c4e37597d9e2f32ceaefa046ebbf436855cd0da244012f7d19", kill_on_drop: false }`
[INFO] [stdout] 742d23866a15f0c4e37597d9e2f32ceaefa046ebbf436855cd0da244012f7d19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61caba097a03de292b10c711c1f05c70152b77f04db645720b5268558312b882
[INFO] running `Command { std: "docker" "start" "-a" "61caba097a03de292b10c711c1f05c70152b77f04db645720b5268558312b882", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]    Compiling httparse v1.4.0
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking futures-sink v0.3.14
[INFO] [stderr]     Checking futures-task v0.3.14
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stderr]     Checking http-body v0.4.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]    Compiling lzma-sys v0.1.17
[INFO] [stderr]     Checking ucd-trie v0.1.3
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]    Compiling embed-resource v1.6.1
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking semver-parser v0.10.2
[INFO] [stderr]     Checking url v2.2.1
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]    Compiling frum v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]    Compiling indoc v1.0.3
[INFO] [stderr]     Checking tar v0.4.33
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking tokio-util v0.6.6
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]     Checking semver v0.11.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking encoding_rs_io v0.1.7
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]     Checking webpki-roots v0.21.1
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking zip v0.5.12
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking tokio-rustls v0.22.0
[INFO] [stderr]     Checking h2 v0.3.2
[INFO] [stderr]     Checking hyper v0.14.5
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking hyper-rustls v0.22.1
[INFO] [stderr]     Checking reqwest v0.11.3
[INFO] [stdout] warning: unused import: `windows_command::WindowsCommand`
[INFO] [stdout]   --> src/shell/mod.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub use windows_command::WindowsCommand;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> tests/utils/mod.rs:151:15
[INFO] [stdout]     |
[INFO] [stdout] 151 |         match stdout.parse() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `windows_command::WindowsCommand`
[INFO] [stdout]   --> src/shell/mod.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub use windows_command::WindowsCommand;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> tests/utils/mod.rs:289:15
[INFO] [stdout]     |
[INFO] [stdout] 289 |         match stdout.parse() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> tests/utils/mod.rs:302:15
[INFO] [stdout]     |
[INFO] [stdout] 302 |         match stderr.parse() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> tests/utils/mod.rs:479:33
[INFO] [stdout]     |
[INFO] [stdout] 479 |       let env_cmd: String = match String::from_utf8_lossy(
[INFO] [stdout]     |  _________________________________^
[INFO] [stdout] 480 | |         &Command::new(root.join(format!("../frum{}", env::consts::EXE_SUFFIX)))
[INFO] [stdout] 481 | |             .arg("init")
[INFO] [stdout] 482 | |             .env("FRUM_PATH", &dir)
[INFO] [stdout] ...   |
[INFO] [stdout] 487 | |     .parse()
[INFO] [stdout]     | |____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `frum` (test "lib") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: fields `url`, `sha1`, `sha256`, and `sha521` are never read
[INFO] [stdout]  --> src/remote_ruby_index.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct IndexedRubyVersion {
[INFO] [stdout]   |            ------------------ fields in this struct
[INFO] [stdout] 4 |     pub version: Version,
[INFO] [stdout] 5 |     pub url: String,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 6 |     pub sha1: String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 7 |     pub sha256: String,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 8 |     pub sha521: String,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ProcessInfo` is never constructed
[INFO] [stdout]  --> src/shell/infer/mod.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ProcessInfo {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WindowsCommand` is never constructed
[INFO] [stdout]  --> src/shell/windows_command/mod.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct WindowsCommand;
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_cd_file_at` is never used
[INFO] [stdout]   --> src/shell/windows_command/mod.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn create_cd_file_at(path: &std::path::Path) -> std::io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `url`, `sha1`, `sha256`, and `sha521` are never read
[INFO] [stdout]  --> src/remote_ruby_index.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct IndexedRubyVersion {
[INFO] [stdout]   |            ------------------ fields in this struct
[INFO] [stdout] 4 |     pub version: Version,
[INFO] [stdout] 5 |     pub url: String,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 6 |     pub sha1: String,
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 7 |     pub sha256: String,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout] 8 |     pub sha521: String,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ProcessInfo` is never constructed
[INFO] [stdout]  --> src/shell/infer/mod.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ProcessInfo {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WindowsCommand` is never constructed
[INFO] [stdout]  --> src/shell/windows_command/mod.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct WindowsCommand;
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_cd_file_at` is never used
[INFO] [stdout]   --> src/shell/windows_command/mod.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn create_cd_file_at(path: &std::path::Path) -> std::io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "61caba097a03de292b10c711c1f05c70152b77f04db645720b5268558312b882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61caba097a03de292b10c711c1f05c70152b77f04db645720b5268558312b882", kill_on_drop: false }`
[INFO] [stdout] 61caba097a03de292b10c711c1f05c70152b77f04db645720b5268558312b882
