[INFO] cloning repository https://github.com/meain/tojson
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/meain/tojson" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeain%2Ftojson", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeain%2Ftojson'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bebdd5017622ad7ea6d4b6ecac9a16af3653c6ca
[INFO] checking meain/tojson 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%2Fmeain%2Ftojson" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/meain/tojson
[INFO] finished tweaking git repo https://github.com/meain/tojson
[INFO] tweaked toml for git repo https://github.com/meain/tojson written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/meain/tojson 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/meain/tojson 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 2957078ccc1abdea63611c39535d8f75f28dee01d11a219bad83c5665e5f2a85
[INFO] running `Command { std: "docker" "start" "-a" "2957078ccc1abdea63611c39535d8f75f28dee01d11a219bad83c5665e5f2a85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2957078ccc1abdea63611c39535d8f75f28dee01d11a219bad83c5665e5f2a85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2957078ccc1abdea63611c39535d8f75f28dee01d11a219bad83c5665e5f2a85", kill_on_drop: false }`
[INFO] [stdout] 2957078ccc1abdea63611c39535d8f75f28dee01d11a219bad83c5665e5f2a85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 96fa10a1b1875eea7286c1e03aafeb0e70322436820a89114a2f25860551ce79
[INFO] running `Command { std: "docker" "start" "-a" "96fa10a1b1875eea7286c1e03aafeb0e70322436820a89114a2f25860551ce79", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.27
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking dtoa v0.4.5
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking serde_yaml v0.8.12
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]     Checking structopt v0.3.14
[INFO] [stderr]     Checking tojson v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     #[structopt(short, long, default_value = "auto", possible_values = &["auto", "yaml", "toml", "json"])]
[INFO] [stdout] 12 | |     from: 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 `tojson` (bin "tojson") due to 3 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     #[structopt(short, long, default_value = "json", possible_values = &["json", "yaml", "toml"])]
[INFO] [stdout] 14 | |     to: String,
[INFO] [stdout]    | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     filename: 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/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     #[structopt(short, long, default_value = "auto", possible_values = &["auto", "yaml", "toml", "json"])]
[INFO] [stdout] 12 | |     from: 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/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     #[structopt(short, long, default_value = "json", possible_values = &["json", "yaml", "toml"])]
[INFO] [stdout] 14 | |     to: 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/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     filename: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tojson` (bin "tojson" test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "96fa10a1b1875eea7286c1e03aafeb0e70322436820a89114a2f25860551ce79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96fa10a1b1875eea7286c1e03aafeb0e70322436820a89114a2f25860551ce79", kill_on_drop: false }`
[INFO] [stdout] 96fa10a1b1875eea7286c1e03aafeb0e70322436820a89114a2f25860551ce79
