[INFO] fetching crate librollenspielsache 0.1.2...
[INFO] checking librollenspielsache-0.1.2 against master#b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd for pr-155501
[INFO] extracting crate librollenspielsache 0.1.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate librollenspielsache 0.1.2
[INFO] finished tweaking crates.io crate librollenspielsache 0.1.2
[INFO] tweaked toml for crates.io crate librollenspielsache 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate librollenspielsache 0.1.2 on toolchain b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "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" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] f9dad1e2e9d7363b88b4bf18ffac8666da51bf764abb7026b266dd5f41516f0d
[INFO] running `Command { std: "docker" "start" "-a" "f9dad1e2e9d7363b88b4bf18ffac8666da51bf764abb7026b266dd5f41516f0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9dad1e2e9d7363b88b4bf18ffac8666da51bf764abb7026b266dd5f41516f0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9dad1e2e9d7363b88b4bf18ffac8666da51bf764abb7026b266dd5f41516f0d", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e99e24ea763aa74ee7a98990ccf8ef24ea5039cbe912dd8336fa5b375b8413cf
[INFO] running `Command { std: "docker" "start" "-a" "e99e24ea763aa74ee7a98990ccf8ef24ea5039cbe912dd8336fa5b375b8413cf", kill_on_drop: false }`
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[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/character.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Character {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 5 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Character` 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: trait `GameSystem` is never used
[INFO] [stdout]  --> src/game_system.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait GameSystem {
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `RedisType` is never used
[INFO] [stdout]   --> src/redis.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 | trait RedisType {
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/character.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Character {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 5 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Character` 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: trait `GameSystem` is never used
[INFO] [stdout]  --> src/game_system.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait GameSystem {
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `RedisType` is never used
[INFO] [stdout]   --> src/redis.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 | trait RedisType {
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/interface/dice.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Box::from_raw(ptr);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let _ = Box::from_raw(ptr);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/interface/dice.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     Box::from_raw(ptr);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 121 |     let _ = Box::from_raw(ptr);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::ffi::CString::from_raw` that must be used
[INFO] [stdout]   --> src/interface/ffi_string.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         CString::from_raw(s)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(from_raw(ptr))` if you intend to drop the `CString`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let _ = CString::from_raw(s);
[INFO] [stdout]    |         +++++++                     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/interface/dice.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Box::from_raw(ptr);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let _ = Box::from_raw(ptr);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/interface/dice.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     Box::from_raw(ptr);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 121 |     let _ = Box::from_raw(ptr);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::ffi::CString::from_raw` that must be used
[INFO] [stdout]   --> src/interface/ffi_string.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         CString::from_raw(s)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(from_raw(ptr))` if you intend to drop the `CString`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let _ = CString::from_raw(s);
[INFO] [stdout]    |         +++++++                     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.31s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: redis v0.15.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 13`
[INFO] running `Command { std: "docker" "inspect" "e99e24ea763aa74ee7a98990ccf8ef24ea5039cbe912dd8336fa5b375b8413cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e99e24ea763aa74ee7a98990ccf8ef24ea5039cbe912dd8336fa5b375b8413cf", kill_on_drop: false }`
[INFO] [stdout] e99e24ea763aa74ee7a98990ccf8ef24ea5039cbe912dd8336fa5b375b8413cf