[INFO] fetching crate inkpad 0.2.0...
[INFO] checking inkpad-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate inkpad 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate inkpad 0.2.0
[INFO] finished tweaking crates.io crate inkpad 0.2.0
[INFO] tweaked toml for crates.io crate inkpad 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate inkpad 0.2.0 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 inkpad 0.2.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] cc01e1ec294036088545cd51bc13702906d170df6a2285507dfc65361f800e1f
[INFO] running `Command { std: "docker" "start" "-a" "cc01e1ec294036088545cd51bc13702906d170df6a2285507dfc65361f800e1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc01e1ec294036088545cd51bc13702906d170df6a2285507dfc65361f800e1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc01e1ec294036088545cd51bc13702906d170df6a2285507dfc65361f800e1f", kill_on_drop: false }`
[INFO] [stdout] cc01e1ec294036088545cd51bc13702906d170df6a2285507dfc65361f800e1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] fe238ed0f5221463f9216ea291f2047d04afc2d7b1b5c28d814e503adf881c1d
[INFO] running `Command { std: "docker" "start" "-a" "fe238ed0f5221463f9216ea291f2047d04afc2d7b1b5c28d814e503adf881c1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking parity-wasm v0.42.2
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking byte-slice-cast v1.2.1
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]     Checking inkpad-std v0.1.0
[INFO] [stderr]     Checking cpufeatures v0.2.2
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking wasmi-validation v0.4.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking bitvec v0.20.4
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking etc v0.1.16
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking dirs v3.0.2
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking hmac v0.8.1
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking libsecp256k1-core v0.3.0
[INFO] [stderr]     Checking sled v0.34.7
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking hmac-drbg v0.3.0
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking patract-wasmi v0.9.1
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]    Compiling libsecp256k1-gen-genmult v0.3.0
[INFO] [stderr]    Compiling libsecp256k1-gen-ecmult v0.3.0
[INFO] [stderr]    Compiling libsecp256k1 v0.7.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling inkpad-derive v0.1.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling parity-scale-codec-derive v2.3.1
[INFO] [stderr]     Checking parity-scale-codec v2.3.1
[INFO] [stderr]     Checking inkpad-support v0.1.0
[INFO] [stderr]     Checking inkpad-executor v0.1.0
[INFO] [stderr]     Checking inkpad-sandbox v0.1.0
[INFO] [stderr]     Checking inkpad-seal v0.1.0
[INFO] [stderr]     Checking inkpad-ri v0.1.0
[INFO] [stderr]     Checking inkpad-runtime v0.1.0
[INFO] [stderr]     Checking inkpad v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/result.rs:15:33
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct CouldNotParseCommand(String);
[INFO] [stdout]    |            -------------------- ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `CouldNotParseCommand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/result.rs:17:32
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct ParseContractFailed(String);
[INFO] [stdout]    |            ------------------- ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `ParseContractFailed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/result.rs:19:32
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct DecodeAddressFailed(String);
[INFO] [stdout]    |            ------------------- ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `DecodeAddressFailed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/result.rs:21:19
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Custom(String);
[INFO] [stdout]    |            ------ ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Custom` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/cmd/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     /// Target contract
[INFO] [stdout] 14 | |     #[structopt(
[INFO] [stdout] 15 | |         name = "*.contract | name | code-hash",
[INFO] [stdout] 16 | |         help = "If empty, inkpad will load the last contract which has been executed"
[INFO] [stdout] 17 | |     )]
[INFO] [stdout] 18 | |     pub contract: Option<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: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/tx.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | /     /// Calling method
[INFO] [stdout] 10 | |     pub method: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/tx.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     /// Contract caller
[INFO] [stdout] 12 | |     #[structopt(long)]
[INFO] [stdout] 13 | |     pub caller: Option<String>,
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/tx.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     /// Contract callee
[INFO] [stdout] 15 | |     #[structopt(long)]
[INFO] [stdout] 16 | |     pub address: Option<String>,
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/tx.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     /// current time
[INFO] [stdout] 24 | |     #[structopt(long, short)]
[INFO] [stdout] 25 | |     pub now: Option<String>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/tx.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     /// Arguments
[INFO] [stdout] 30 | |     #[structopt(long, short, name = "string,")]
[INFO] [stdout] 31 | |     pub args: Vec<String>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/result.rs:15:33
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct CouldNotParseCommand(String);
[INFO] [stdout]    |            -------------------- ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `CouldNotParseCommand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/result.rs:17:32
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct ParseContractFailed(String);
[INFO] [stdout]    |            ------------------- ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `ParseContractFailed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/result.rs:19:32
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct DecodeAddressFailed(String);
[INFO] [stdout]    |            ------------------- ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `DecodeAddressFailed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/result.rs:21:19
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Custom(String);
[INFO] [stdout]    |            ------ ^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Custom` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/cmd/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     /// Target contract
[INFO] [stdout] 14 | |     #[structopt(
[INFO] [stdout] 15 | |         name = "*.contract | name | code-hash",
[INFO] [stdout] 16 | |         help = "If empty, inkpad will load the last contract which has been executed"
[INFO] [stdout] 17 | |     )]
[INFO] [stdout] 18 | |     pub contract: Option<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: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/tx.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | /     /// Calling method
[INFO] [stdout] 10 | |     pub method: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/tx.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     /// Contract caller
[INFO] [stdout] 12 | |     #[structopt(long)]
[INFO] [stdout] 13 | |     pub caller: Option<String>,
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/tx.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     /// Contract callee
[INFO] [stdout] 15 | |     #[structopt(long)]
[INFO] [stdout] 16 | |     pub address: Option<String>,
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/tx.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     /// current time
[INFO] [stdout] 24 | |     #[structopt(long, short)]
[INFO] [stdout] 25 | |     pub now: Option<String>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/tx.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     /// Arguments
[INFO] [stdout] 30 | |     #[structopt(long, short, name = "string,")]
[INFO] [stdout] 31 | |     pub args: Vec<String>,
[INFO] [stdout]    | |_________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `inkpad` (lib) due to 6 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `inkpad` (lib test) due to 6 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "fe238ed0f5221463f9216ea291f2047d04afc2d7b1b5c28d814e503adf881c1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe238ed0f5221463f9216ea291f2047d04afc2d7b1b5c28d814e503adf881c1d", kill_on_drop: false }`
[INFO] [stdout] fe238ed0f5221463f9216ea291f2047d04afc2d7b1b5c28d814e503adf881c1d
