[INFO] fetching crate cargo-launcher 1.0.1...
[INFO] checking cargo-launcher-1.0.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate cargo-launcher 1.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate cargo-launcher 1.0.1
[INFO] finished tweaking crates.io crate cargo-launcher 1.0.1
[INFO] tweaked toml for crates.io crate cargo-launcher 1.0.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cargo-launcher 1.0.1 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 146 packages to latest compatible versions
[INFO] [stderr]       Adding dirs v1.0.5 (available: v6.0.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding pretty_env_logger v0.3.1 (available: v0.5.0)
[INFO] [stderr]       Adding structopt v0.2.18 (available: v0.3.26)
[INFO] [stderr]       Adding tera v0.11.20 (available: v1.20.1)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] [stderr]       Adding zip v0.5.13 (available: v6.0.0)
[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] 0b66ec560fdc84bab7ecbe91bdc37f3341ca7ed9931aa85c98895808d7e5a659
[INFO] running `Command { std: "docker" "start" "-a" "0b66ec560fdc84bab7ecbe91bdc37f3341ca7ed9931aa85c98895808d7e5a659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b66ec560fdc84bab7ecbe91bdc37f3341ca7ed9931aa85c98895808d7e5a659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b66ec560fdc84bab7ecbe91bdc37f3341ca7ed9931aa85c98895808d7e5a659", kill_on_drop: false }`
[INFO] [stdout] 0b66ec560fdc84bab7ecbe91bdc37f3341ca7ed9931aa85c98895808d7e5a659
[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] bf77ffe6a4e5566e35f50ae403f6bab85c24981b9690bd07a16d9bd322c0273c
[INFO] running `Command { std: "docker" "start" "-a" "bf77ffe6a4e5566e35f50ae403f6bab85c24981b9690bd07a16d9bd322c0273c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking unic-common v0.7.0
[INFO] [stderr]     Checking unic-char-range v0.7.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking backtrace v0.3.76
[INFO] [stderr]    Compiling pest_meta v2.8.3
[INFO] [stderr]     Checking chrono v0.4.42
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking pest v2.8.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking unic-ucd-version v0.7.0
[INFO] [stderr]     Checking unic-char-property v0.7.0
[INFO] [stderr]     Checking unic-ucd-segment v0.7.0
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking unic-segment v0.7.0
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking zip v0.5.13
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]    Compiling pest_generator v2.8.3
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]    Compiling pest_derive v2.8.3
[INFO] [stderr]     Checking tera v0.11.20
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking cargo-launcher v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Metadata` is never constructed
[INFO] [stdout]   --> src/cargo.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Metadata {
[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 `LauncherConfig` is never constructed
[INFO] [stdout]   --> src/cargo.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct LauncherConfig {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Metadata` is never constructed
[INFO] [stdout]   --> src/cargo.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Metadata {
[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 `LauncherConfig` is never constructed
[INFO] [stdout]   --> src/cargo.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct LauncherConfig {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[derive(StructOpt, Debug)]
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the derive macro `StructOpt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[derive(StructOpt, Debug)]
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the derive macro `StructOpt` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cargo-launcher` (bin "cargo-launcher") due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `cargo-launcher` (bin "cargo-launcher" test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "bf77ffe6a4e5566e35f50ae403f6bab85c24981b9690bd07a16d9bd322c0273c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf77ffe6a4e5566e35f50ae403f6bab85c24981b9690bd07a16d9bd322c0273c", kill_on_drop: false }`
[INFO] [stdout] bf77ffe6a4e5566e35f50ae403f6bab85c24981b9690bd07a16d9bd322c0273c