[INFO] cloning repository https://github.com/mortonar/rusty-coreutils
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mortonar/rusty-coreutils" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmortonar%2Frusty-coreutils", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmortonar%2Frusty-coreutils'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78014b11beea05d7753a095f91c3ae8f294cbf21
[INFO] checking mortonar/rusty-coreutils against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmortonar%2Frusty-coreutils" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mortonar/rusty-coreutils
[INFO] finished tweaking git repo https://github.com/mortonar/rusty-coreutils
[INFO] tweaked toml for git repo https://github.com/mortonar/rusty-coreutils written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mortonar/rusty-coreutils 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 git repo https://github.com/mortonar/rusty-coreutils 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] e42e4fb351cf0815653b668b0e3948ed213336e0c3f144351c3b541a3caea710
[INFO] running `Command { std: "docker" "start" "-a" "e42e4fb351cf0815653b668b0e3948ed213336e0c3f144351c3b541a3caea710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e42e4fb351cf0815653b668b0e3948ed213336e0c3f144351c3b541a3caea710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e42e4fb351cf0815653b668b0e3948ed213336e0c3f144351c3b541a3caea710", kill_on_drop: false }`
[INFO] [stdout] e42e4fb351cf0815653b668b0e3948ed213336e0c3f144351c3b541a3caea710
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] fb72b1de6f0d7c18254529b6c47b67e3c028320a69d1ba8d5c6d2431d47ccf5f
[INFO] running `Command { std: "docker" "start" "-a" "fb72b1de6f0d7c18254529b6c47b67e3c028320a69d1ba8d5c6d2431d47ccf5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking unix_mode v0.1.3
[INFO] [stderr]     Checking rev_lines v0.2.1
[INFO] [stderr]     Checking clap_lex v0.1.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking users v0.11.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]     Checking clap v3.1.9
[INFO] [stderr]     Checking rusty-coreutils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]  --> src/head/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     file: Vec<String>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/head/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     #[clap(short = 'n', long = "lines")]
[INFO] [stdout] 11 | |     lines: Option<String>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-coreutils` (bin "head" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rusty-coreutils` (bin "mkdir") due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]  --> src/mkdir/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     directories: Vec<String>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]  --> src/mkdir/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     directories: Vec<String>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]  --> src/echo/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     string: Vec<String>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-coreutils` (bin "mkdir" test) due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]  --> src/yes/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     string: Vec<String>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-coreutils` (bin "echo" test) due to 1 previous error
[INFO] [stderr] error: could not compile `rusty-coreutils` (bin "yes" test) due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ls/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     files: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]  --> src/head/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     file: Vec<String>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/head/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     #[clap(short = 'n', long = "lines")]
[INFO] [stdout] 11 | |     lines: Option<String>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]  --> src/cat/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     files: Vec<String>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]  --> src/echo/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     string: Vec<String>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-coreutils` (bin "head") due to 2 previous errors
[INFO] [stderr] error: could not compile `rusty-coreutils` (bin "cat" test) due to 1 previous error
[INFO] [stderr] error: could not compile `rusty-coreutils` (bin "ls" test) due to 1 previous error
[INFO] [stderr] error: could not compile `rusty-coreutils` (bin "echo") due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/tail/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     file: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/tail/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     #[clap(short = 'n', long = "lines")]
[INFO] [stdout] 13 | |     lines: Option<String>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-coreutils` (bin "tail" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "fb72b1de6f0d7c18254529b6c47b67e3c028320a69d1ba8d5c6d2431d47ccf5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb72b1de6f0d7c18254529b6c47b67e3c028320a69d1ba8d5c6d2431d47ccf5f", kill_on_drop: false }`
[INFO] [stdout] fb72b1de6f0d7c18254529b6c47b67e3c028320a69d1ba8d5c6d2431d47ccf5f