[INFO] fetching crate ditto 0.2.0... [INFO] checking ditto-0.2.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate ditto 0.2.0 into /workspace/builds/worker-1-tc1/source [INFO] validating manifest of crates.io crate ditto 0.2.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate ditto 0.2.0 [INFO] finished tweaking crates.io crate ditto 0.2.0 [INFO] tweaked toml for crates.io crate ditto 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 51 packages [INFO] [stderr] Adding arrayvec v0.5.2 (latest: v0.7.4) [INFO] [stderr] Adding base64 v0.9.3 (latest: v0.22.0) [INFO] [stderr] Adding base64 v0.13.1 (latest: v0.22.0) [INFO] [stderr] Adding blake2b_simd v0.5.11 (latest: v1.0.2) [INFO] [stderr] Adding constant_time_eq v0.1.5 (latest: v0.3.0) [INFO] [stderr] Adding dirs v1.0.5 (latest: v5.0.1) [INFO] [stderr] Adding getrandom v0.1.16 (latest: v0.2.12) [INFO] [stderr] Adding num v0.1.42 (latest: v0.4.1) [INFO] [stderr] Adding num-bigint v0.1.44 (latest: v0.4.4) [INFO] [stderr] Adding num-complex v0.1.43 (latest: v0.4.5) [INFO] [stderr] Adding num-rational v0.1.42 (latest: v0.4.1) [INFO] [stderr] Adding rand v0.4.6 (latest: v0.8.5) [INFO] [stderr] Adding rand_core v0.3.1 (latest: v0.6.4) [INFO] [stderr] Adding rand_core v0.4.2 (latest: v0.6.4) [INFO] [stderr] Adding rdrand v0.4.0 (latest: v0.8.3) [INFO] [stderr] Adding redox_syscall v0.1.57 (latest: v0.5.1) [INFO] [stderr] Adding redox_users v0.3.5 (latest: v0.4.5) [INFO] [stderr] Adding rmp-serde v0.13.7 (latest: v1.1.2) [INFO] [stderr] Adding rust-argon2 v0.8.3 (latest: v2.1.0) [INFO] [stderr] Adding term v0.5.2 (latest: v0.7.0) [INFO] [stderr] Adding wasi v0.9.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded clippy v0.0.302 [INFO] [stderr] Downloaded rmp-serde v0.13.7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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_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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4451e1a63ee3b9ce81d55c41cb60328d42868105e48b336c0b3327e13c2bcd3e [INFO] running `Command { std: "docker" "start" "-a" "4451e1a63ee3b9ce81d55c41cb60328d42868105e48b336c0b3327e13c2bcd3e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4451e1a63ee3b9ce81d55c41cb60328d42868105e48b336c0b3327e13c2bcd3e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4451e1a63ee3b9ce81d55c41cb60328d42868105e48b336c0b3327e13c2bcd3e", kill_on_drop: false }` [INFO] [stdout] 4451e1a63ee3b9ce81d55c41cb60328d42868105e48b336c0b3327e13c2bcd3e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d3a31f3f20687325170d49704634a98d1b1f71722bf0d7c49a8b8939b4ef3f10 [INFO] running `Command { std: "docker" "start" "-a" "d3a31f3f20687325170d49704634a98d1b1f71722bf0d7c49a8b8939b4ef3f10", kill_on_drop: false }` [INFO] [stderr] Checking rustc-serialize v0.3.25 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking rmp v0.8.12 [INFO] [stderr] Checking assert_matches v1.5.0 [INFO] [stderr] Checking rmp-serde v0.13.7 [INFO] [stderr] Checking num-iter v0.1.44 [INFO] [stderr] Checking num-bigint v0.1.44 [INFO] [stderr] Checking num-complex v0.1.43 [INFO] [stderr] Checking num-rational v0.1.42 [INFO] [stderr] Checking num v0.1.42 [INFO] [stderr] Checking ditto v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `serde_json` is imported redundantly [INFO] [stdout] --> src/json.rs:11:18 [INFO] [stdout] | [INFO] [stdout] 11 | use serde_json::{self, Value as SJValue}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:195:1 [INFO] [stdout] | [INFO] [stdout] 195 | extern crate serde_json; [INFO] [stdout] | ------------------------ the item `serde_json` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `serde_json` is imported redundantly [INFO] [stdout] --> src/error.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use serde_json; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:195:1 [INFO] [stdout] | [INFO] [stdout] 195 | extern crate serde_json; [INFO] [stdout] | ------------------------ the item `serde_json` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `base64` is imported redundantly [INFO] [stdout] --> src/sequence/uid.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | use base64; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:183:1 [INFO] [stdout] | [INFO] [stdout] 183 | extern crate base64; [INFO] [stdout] | -------------------- the item `base64` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/sequence/uid.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:186:1 [INFO] [stdout] | [INFO] [stdout] 186 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `serde_json` is imported redundantly [INFO] [stdout] --> src/error.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use serde_json; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:192:1 [INFO] [stdout] | [INFO] [stdout] 192 | extern crate serde_json; [INFO] [stdout] | ------------------------ the item `serde_json` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `base64` is imported redundantly [INFO] [stdout] --> src/sequence/uid.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | use base64; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:183:1 [INFO] [stdout] | [INFO] [stdout] 183 | extern crate base64; [INFO] [stdout] | -------------------- the item `base64` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/sequence/uid.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:186:1 [INFO] [stdout] | [INFO] [stdout] 186 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `BigUint` is imported redundantly [INFO] [stdout] --> src/sequence/uid.rs:266:23 [INFO] [stdout] | [INFO] [stdout] 265 | use super::*; [INFO] [stdout] | -------- the item `BigUint` is already imported here [INFO] [stdout] 266 | use num::bigint::{BigUint, ToBigUint}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ToBigUint` is imported redundantly [INFO] [stdout] --> src/sequence/uid.rs:266:32 [INFO] [stdout] | [INFO] [stdout] 265 | use super::*; [INFO] [stdout] | -------- the item `ToBigUint` is already imported here [INFO] [stdout] 266 | use num::bigint::{BigUint, ToBigUint}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `FromStr` is imported redundantly [INFO] [stdout] --> src/sequence/uid.rs:267:9 [INFO] [stdout] | [INFO] [stdout] 265 | use super::*; [INFO] [stdout] | -------- the item `FromStr` is already imported here [INFO] [stdout] 266 | use num::bigint::{BigUint, ToBigUint}; [INFO] [stdout] 267 | use std::str::FromStr; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `serde_json` is imported redundantly [INFO] [stdout] --> src/sequence/uid.rs:268:9 [INFO] [stdout] | [INFO] [stdout] 268 | use serde_json; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:192:1 [INFO] [stdout] | [INFO] [stdout] 192 | extern crate serde_json; [INFO] [stdout] | ------------------------ the item `serde_json` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rmp_serde` is imported redundantly [INFO] [stdout] --> src/sequence/uid.rs:269:9 [INFO] [stdout] | [INFO] [stdout] 269 | use rmp_serde; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:202:1 [INFO] [stdout] | [INFO] [stdout] 202 | extern crate rmp_serde; [INFO] [stdout] | ----------------------- the item `rmp_serde` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/tree.rs:549:16 [INFO] [stdout] | [INFO] [stdout] 549 | use rand::{self, Rng}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:186:1 [INFO] [stdout] | [INFO] [stdout] 186 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `BigUint` is imported redundantly [INFO] [stdout] --> src/vlq.rs:86:23 [INFO] [stdout] | [INFO] [stdout] 85 | use super::*; [INFO] [stdout] | -------- the item `BigUint` is already imported here [INFO] [stdout] 86 | use num::bigint::{BigUint,ToBigUint}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ToBigUint` is imported redundantly [INFO] [stdout] --> src/vlq.rs:86:31 [INFO] [stdout] | [INFO] [stdout] 85 | use super::*; [INFO] [stdout] | -------- the item `ToBigUint` is already imported here [INFO] [stdout] 86 | use num::bigint::{BigUint,ToBigUint}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/sequence/uid.rs:86:16 [INFO] [stdout] | [INFO] [stdout] 86 | panic!(format!("Uid cannot have more than ({}) levels", MAX_LEVEL)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 86 - panic!(format!("Uid cannot have more than ({}) levels", MAX_LEVEL)); [INFO] [stdout] 86 + panic!("Uid cannot have more than ({}) levels", MAX_LEVEL); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/tree.rs:382:13 [INFO] [stdout] | [INFO] [stdout] 382 | mem::replace(self, child); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 382 | let _ = mem::replace(self, child); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/sequence/uid.rs:86:16 [INFO] [stdout] | [INFO] [stdout] 86 | panic!(format!("Uid cannot have more than ({}) levels", MAX_LEVEL)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 86 - panic!(format!("Uid cannot have more than ({}) levels", MAX_LEVEL)); [INFO] [stdout] 86 + panic!("Uid cannot have more than ({}) levels", MAX_LEVEL); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/tree.rs:382:13 [INFO] [stdout] | [INFO] [stdout] 382 | mem::replace(self, child); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 382 | let _ = mem::replace(self, child); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.33s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint v0.1.44, num-complex v0.1.43, num-rational v0.1.42 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3` [INFO] running `Command { std: "docker" "inspect" "d3a31f3f20687325170d49704634a98d1b1f71722bf0d7c49a8b8939b4ef3f10", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d3a31f3f20687325170d49704634a98d1b1f71722bf0d7c49a8b8939b4ef3f10", kill_on_drop: false }` [INFO] [stdout] d3a31f3f20687325170d49704634a98d1b1f71722bf0d7c49a8b8939b4ef3f10