[INFO] cloning repository https://github.com/Nirusu99/practice-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nirusu99/practice-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNirusu99%2Fpractice-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNirusu99%2Fpractice-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] caab1b9f31d77892a5294a9949d09d34e066776d
[INFO] checking Nirusu99/practice-rs against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNirusu99%2Fpractice-rs" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/Nirusu99/practice-rs 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 git repo https://github.com/Nirusu99/practice-rs
[INFO] finished tweaking git repo https://github.com/Nirusu99/practice-rs
[INFO] tweaked toml for git repo https://github.com/Nirusu99/practice-rs written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Nirusu99/practice-rs 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pbr v1.0.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] cddad8f47cdf8857c62b3e2f6c4d95f355a340acbbff3a5757eddd38b8ca66d1
[INFO] running `Command { std: "docker" "start" "-a" "cddad8f47cdf8857c62b3e2f6c4d95f355a340acbbff3a5757eddd38b8ca66d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cddad8f47cdf8857c62b3e2f6c4d95f355a340acbbff3a5757eddd38b8ca66d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cddad8f47cdf8857c62b3e2f6c4d95f355a340acbbff3a5757eddd38b8ca66d1", kill_on_drop: false }`
[INFO] [stdout] cddad8f47cdf8857c62b3e2f6c4d95f355a340acbbff3a5757eddd38b8ca66d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] fef6a234c24963c011f426a1a0f451c65e0421e87d8c383d14545dc04aa8e721
[INFO] running `Command { std: "docker" "start" "-a" "fef6a234c24963c011f426a1a0f451c65e0421e87d8c383d14545dc04aa8e721", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking problem-k v0.1.0 (/opt/rustwide/workdir/problem-k)
[INFO] [stderr]     Checking problem-c v0.1.0 (/opt/rustwide/workdir/problem-c)
[INFO] [stderr]     Checking uwu-rs v0.1.0 (/opt/rustwide/workdir/uwu-rs)
[INFO] [stderr]     Checking problem-b v0.1.0 (/opt/rustwide/workdir/problem-b)
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> uwu-rs/src/main.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{error::Error, result::Result};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> uwu-rs/src/main.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{error::Error, result::Result};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking problem-d v0.1.0 (/opt/rustwide/workdir/problem-d)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking pbr v1.0.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking generate_test v0.1.0 (/opt/rustwide/workdir/generate_test)
[INFO] [stderr]     Checking analysis-rs v0.1.0 (/opt/rustwide/workdir/analysis-rs)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `Command { std: "docker" "inspect" "fef6a234c24963c011f426a1a0f451c65e0421e87d8c383d14545dc04aa8e721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef6a234c24963c011f426a1a0f451c65e0421e87d8c383d14545dc04aa8e721", kill_on_drop: false }`
[INFO] [stdout] fef6a234c24963c011f426a1a0f451c65e0421e87d8c383d14545dc04aa8e721
[INFO] checking Nirusu99/practice-rs against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNirusu99%2Fpractice-rs" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:  99% (22207/22234)
Updating files: 100% (22234/22234)
Updating files: 100% (22234/22234), done.
[INFO] validating manifest of git repo https://github.com/Nirusu99/practice-rs on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nirusu99/practice-rs
[INFO] finished tweaking git repo https://github.com/Nirusu99/practice-rs
[INFO] tweaked toml for git repo https://github.com/Nirusu99/practice-rs written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Nirusu99/practice-rs 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1449227813f11638acb8073d3398e50eeed4d1e3e617368c5cac8659d9a26d22
[INFO] running `Command { std: "docker" "start" "-a" "1449227813f11638acb8073d3398e50eeed4d1e3e617368c5cac8659d9a26d22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1449227813f11638acb8073d3398e50eeed4d1e3e617368c5cac8659d9a26d22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1449227813f11638acb8073d3398e50eeed4d1e3e617368c5cac8659d9a26d22", kill_on_drop: false }`
[INFO] [stdout] 1449227813f11638acb8073d3398e50eeed4d1e3e617368c5cac8659d9a26d22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd3b7a30409da1f3834e3d57976d642f7c8c0912be5f9eba08f11abf51008309
[INFO] running `Command { std: "docker" "start" "-a" "bd3b7a30409da1f3834e3d57976d642f7c8c0912be5f9eba08f11abf51008309", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking problem-b v0.1.0 (/opt/rustwide/workdir/problem-b)
[INFO] [stderr]     Checking problem-d v0.1.0 (/opt/rustwide/workdir/problem-d)
[INFO] [stderr]     Checking problem-c v0.1.0 (/opt/rustwide/workdir/problem-c)
[INFO] [stderr]     Checking uwu-rs v0.1.0 (/opt/rustwide/workdir/uwu-rs)
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> uwu-rs/src/main.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{error::Error, result::Result};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking problem-k v0.1.0 (/opt/rustwide/workdir/problem-k)
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]  --> uwu-rs/src/main.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{error::Error, result::Result};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Result` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/crossbeam-utils-0.8.5/src/sync/parker.rs:364:25
[INFO] [stdout]     |
[INFO] [stdout] 364 | /                         match self.state.swap(EMPTY, SeqCst) {
[INFO] [stdout] 365 | |                             NOTIFIED | PARKED => return,
[INFO] [stdout] 366 | |                             n => panic!("inconsistent park_timeout state: {}", n),
[INFO] [stdout] 367 | |                         };
[INFO] [stdout]     | |_________________________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crossbeam-utils` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "bd3b7a30409da1f3834e3d57976d642f7c8c0912be5f9eba08f11abf51008309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd3b7a30409da1f3834e3d57976d642f7c8c0912be5f9eba08f11abf51008309", kill_on_drop: false }`
[INFO] [stdout] bd3b7a30409da1f3834e3d57976d642f7c8c0912be5f9eba08f11abf51008309