[INFO] fetching crate emeta 0.1.1...
[INFO] checking emeta-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate emeta 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate emeta 0.1.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate emeta 0.1.1
[INFO] finished tweaking crates.io crate emeta 0.1.1
[INFO] tweaked toml for crates.io crate emeta 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate emeta 0.1.1 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded speedy-derive v0.8.0
[INFO] [stderr]   Downloaded speedy v0.8.2
[INFO] [stderr]   Downloaded mini-internal v0.1.24
[INFO] [stderr]   Downloaded miniserde v0.1.24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0700798e4ebb23a18d9d90abcb5a843c17dd92b3ba2ce518521e977e7f0ba82
[INFO] running `Command { std: "docker" "start" "-a" "e0700798e4ebb23a18d9d90abcb5a843c17dd92b3ba2ce518521e977e7f0ba82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0700798e4ebb23a18d9d90abcb5a843c17dd92b3ba2ce518521e977e7f0ba82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0700798e4ebb23a18d9d90abcb5a843c17dd92b3ba2ce518521e977e7f0ba82", kill_on_drop: false }`
[INFO] [stdout] e0700798e4ebb23a18d9d90abcb5a843c17dd92b3ba2ce518521e977e7f0ba82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90bf1d70b8007d76fc341c87d3dbd6723212636ec268bc1319d965a060ebd012
[INFO] running `Command { std: "docker" "start" "-a" "90bf1d70b8007d76fc341c87d3dbd6723212636ec268bc1319d965a060ebd012", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling mini-internal v0.1.24
[INFO] [stderr]    Compiling speedy-derive v0.8.0
[INFO] [stderr]     Checking miniserde v0.1.24
[INFO] [stderr]     Checking speedy v0.8.2
[INFO] [stderr]     Checking emeta v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `MyError`
[INFO] [stdout]  --> src/lib/meta.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{lib::tags, MyError, MyResult, SelfResult};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MyError`
[INFO] [stdout]  --> src/lib/meta.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{lib::tags, MyError, MyResult, SelfResult};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `json`
[INFO] [stdout]  --> src/lib/tags.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use miniserde::{json, Deserialize, Serialize};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `json`
[INFO] [stdout]  --> src/lib/tags.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use miniserde::{json, Deserialize, Serialize};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `meta`, `tags`
[INFO] [stdout]  --> src/main.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use emeta::{meta, tags};
[INFO] [stdout]   |             ^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `miniserde::json`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use miniserde::json;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `meta`, `tags`
[INFO] [stdout]  --> src/main.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use emeta::{meta, tags};
[INFO] [stdout]   |             ^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `miniserde::json`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use miniserde::json;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.05s
[INFO] running `Command { std: "docker" "inspect" "90bf1d70b8007d76fc341c87d3dbd6723212636ec268bc1319d965a060ebd012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90bf1d70b8007d76fc341c87d3dbd6723212636ec268bc1319d965a060ebd012", kill_on_drop: false }`
[INFO] [stdout] 90bf1d70b8007d76fc341c87d3dbd6723212636ec268bc1319d965a060ebd012
[INFO] checking emeta-0.1.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate emeta 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate emeta 0.1.1 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate emeta 0.1.1
[INFO] finished tweaking crates.io crate emeta 0.1.1
[INFO] tweaked toml for crates.io crate emeta 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate emeta 0.1.1 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7b7e461b48017d059413c6c58e1111b5cd1fb97653dde7cf10876ac0f40e571
[INFO] running `Command { std: "docker" "start" "-a" "c7b7e461b48017d059413c6c58e1111b5cd1fb97653dde7cf10876ac0f40e571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7b7e461b48017d059413c6c58e1111b5cd1fb97653dde7cf10876ac0f40e571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7b7e461b48017d059413c6c58e1111b5cd1fb97653dde7cf10876ac0f40e571", kill_on_drop: false }`
[INFO] [stdout] c7b7e461b48017d059413c6c58e1111b5cd1fb97653dde7cf10876ac0f40e571
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f05f45b18d239cb9289ebf3cc1c1c2a5c55bd98ba9bf887163fef6a398ace2c2
[INFO] running `Command { std: "docker" "start" "-a" "f05f45b18d239cb9289ebf3cc1c1c2a5c55bd98ba9bf887163fef6a398ace2c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling mini-internal v0.1.24
[INFO] [stderr]    Compiling speedy-derive v0.8.0
[INFO] [stderr]     Checking miniserde v0.1.24
[INFO] [stderr]     Checking speedy v0.8.2
[INFO] [stderr]     Checking emeta v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `MyError`
[INFO] [stdout]  --> src/lib/meta.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{lib::tags, MyError, MyResult, SelfResult};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `json`
[INFO] [stdout]  --> src/lib/tags.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use miniserde::{json, Deserialize, Serialize};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MyError`
[INFO] [stdout]  --> src/lib/meta.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{lib::tags, MyError, MyResult, SelfResult};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `json`
[INFO] [stdout]  --> src/lib/tags.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use miniserde::{json, Deserialize, Serialize};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `meta`, `tags`
[INFO] [stdout]  --> src/main.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use emeta::{meta, tags};
[INFO] [stdout]   |             ^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `miniserde::json`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use miniserde::json;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `meta`, `tags`
[INFO] [stdout]  --> src/main.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use emeta::{meta, tags};
[INFO] [stdout]   |             ^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `miniserde::json`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use miniserde::json;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.39s
[INFO] running `Command { std: "docker" "inspect" "f05f45b18d239cb9289ebf3cc1c1c2a5c55bd98ba9bf887163fef6a398ace2c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f05f45b18d239cb9289ebf3cc1c1c2a5c55bd98ba9bf887163fef6a398ace2c2", kill_on_drop: false }`
[INFO] [stdout] f05f45b18d239cb9289ebf3cc1c1c2a5c55bd98ba9bf887163fef6a398ace2c2