[INFO] fetching crate in-dir-exec 0.1.1...
[INFO] checking in-dir-exec-0.1.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate in-dir-exec 0.1.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate in-dir-exec 0.1.1
[INFO] finished tweaking crates.io crate in-dir-exec 0.1.1
[INFO] tweaked toml for crates.io crate in-dir-exec 0.1.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate in-dir-exec 0.1.1 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 in-dir-exec 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 881c9b61459d48c68bdd182e79b30f4ced2cc8456bbea683db48bb82f2a86b1e
[INFO] running `Command { std: "docker" "start" "-a" "881c9b61459d48c68bdd182e79b30f4ced2cc8456bbea683db48bb82f2a86b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "881c9b61459d48c68bdd182e79b30f4ced2cc8456bbea683db48bb82f2a86b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "881c9b61459d48c68bdd182e79b30f4ced2cc8456bbea683db48bb82f2a86b1e", kill_on_drop: false }`
[INFO] [stdout] 881c9b61459d48c68bdd182e79b30f4ced2cc8456bbea683db48bb82f2a86b1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] bbe3bb50fcb7a9efa4a4eec15722e471693b00a110ff2d1e6a7e67d9737f840a
[INFO] running `Command { std: "docker" "start" "-a" "bbe3bb50fcb7a9efa4a4eec15722e471693b00a110ff2d1e6a7e67d9737f840a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking errno v0.2.4
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking exec v0.3.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling proc-macro-error v0.4.9
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.9
[INFO] [stderr]    Compiling structopt-derive v0.4.2
[INFO] [stderr]     Checking structopt v0.3.9
[INFO] [stderr]     Checking in-dir-exec v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 | /   #[structopt(help="cmd to exec")]
[INFO] [stdout] 20 | |   cmd: 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<String, Infallible>
[INFO] [stdout]   --> src/main.rs:22:3
[INFO] [stdout]    |
[INFO] [stdout] 22 | /   #[structopt(help="cmd args")]
[INFO] [stdout] 23 | |   arg: Vec<String>,
[INFO] [stdout]    | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `in-dir-exec` (bin "in-dir-exec") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:19:3
[INFO] [stdout]    |
[INFO] [stdout] 19 | /   #[structopt(help="cmd to exec")]
[INFO] [stdout] 20 | |   cmd: 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<String, Infallible>
[INFO] [stdout]   --> src/main.rs:22:3
[INFO] [stdout]    |
[INFO] [stdout] 22 | /   #[structopt(help="cmd args")]
[INFO] [stdout] 23 | |   arg: Vec<String>,
[INFO] [stdout]    | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `in-dir-exec` (bin "in-dir-exec" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "bbe3bb50fcb7a9efa4a4eec15722e471693b00a110ff2d1e6a7e67d9737f840a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbe3bb50fcb7a9efa4a4eec15722e471693b00a110ff2d1e6a7e67d9737f840a", kill_on_drop: false }`
[INFO] [stdout] bbe3bb50fcb7a9efa4a4eec15722e471693b00a110ff2d1e6a7e67d9737f840a