[INFO] fetching crate flatlake 0.4.3...
[INFO] checking flatlake-0.4.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate flatlake 0.4.3 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate flatlake 0.4.3
[INFO] finished tweaking crates.io crate flatlake 0.4.3
[INFO] tweaked toml for crates.io crate flatlake 0.4.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flatlake 0.4.3 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 flatlake 0.4.3 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-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c54fce2f46cac845daf0a3d3a856e8dad9d83acaccc0aab854b0821538d9d4a
[INFO] running `Command { std: "docker" "start" "-a" "3c54fce2f46cac845daf0a3d3a856e8dad9d83acaccc0aab854b0821538d9d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c54fce2f46cac845daf0a3d3a856e8dad9d83acaccc0aab854b0821538d9d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c54fce2f46cac845daf0a3d3a856e8dad9d83acaccc0aab854b0821538d9d4a", kill_on_drop: false }`
[INFO] [stdout] 3c54fce2f46cac845daf0a3d3a856e8dad9d83acaccc0aab854b0821538d9d4a
[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 -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] 9dcd3b7ec662919b9ce22411492f760323d086961d14706d127469164dde61c1
[INFO] running `Command { std: "docker" "start" "-a" "9dcd3b7ec662919b9ce22411492f760323d086961d14706d127469164dde61c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.82
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling serde v1.0.200
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[INFO] [stderr]     Checking flatlake v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `logging::Logger`
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use logging::Logger;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `markdown::mdast`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use markdown::mdast;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Serialize`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde::Serialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/aggregates/mod.rs:2:33
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SortDirection`
[INFO] [stdout]  --> src/aggregates/mod.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 |     options::{OutputMethod, SortDirection},
[INFO] [stdout]   |                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Watershed`
[INFO] [stdout]  --> src/dredger/mod.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::{LakeContext, Tributary, Watershed};
[INFO] [stdout]   |                                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `el_slugify::slugify`
[INFO] [stdout]  --> src/listings/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use el_slugify::slugify;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stdout]  --> src/listings/mod.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                        ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SortDirection`
[INFO] [stdout]  --> src/listings/mod.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 |     options::{OutputMethod, SortDirection},
[INFO] [stdout]   |                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `plural`
[INFO] [stdout]   --> src/logging.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 | macro_rules! plural {
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bail`
[INFO] [stdout]  --> src/options.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{bail, Result};
[INFO] [stdout]   |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ArgAction` and `Command`
[INFO] [stdout]  --> src/options.rs:2:40
[INFO] [stdout]   |
[INFO] [stdout] 2 | use clap::{arg, command, value_parser, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |                                        ^^^^^^^^^              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::future::join_all`
[INFO] [stdout]  --> src/outflow/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::future::join_all;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `json`
[INFO] [stdout]   --> src/outflow/mod.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde_json::{json, Number, Value};
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `markdown::ParseOptions`
[INFO] [stdout]  --> src/sampler/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use markdown::ParseOptions;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Deserialize`
[INFO] [stdout]  --> src/sampler/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde::Deserialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `logging::Logger`
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use logging::Logger;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `markdown::mdast`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use markdown::mdast;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Serialize`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde::Serialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/aggregates/mod.rs:2:33
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SortDirection`
[INFO] [stdout]  --> src/aggregates/mod.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 |     options::{OutputMethod, SortDirection},
[INFO] [stdout]   |                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Watershed`
[INFO] [stdout]  --> src/dredger/mod.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::{LakeContext, Tributary, Watershed};
[INFO] [stdout]   |                                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `el_slugify::slugify`
[INFO] [stdout]  --> src/listings/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use el_slugify::slugify;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stdout]  --> src/listings/mod.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                        ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SortDirection`
[INFO] [stdout]  --> src/listings/mod.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 |     options::{OutputMethod, SortDirection},
[INFO] [stdout]   |                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `plural`
[INFO] [stdout]   --> src/logging.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 | macro_rules! plural {
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bail`
[INFO] [stdout]  --> src/options.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{bail, Result};
[INFO] [stdout]   |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ArgAction` and `Command`
[INFO] [stdout]  --> src/options.rs:2:40
[INFO] [stdout]   |
[INFO] [stdout] 2 | use clap::{arg, command, value_parser, ArgAction, ArgMatches, Command};
[INFO] [stdout]   |                                        ^^^^^^^^^              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::future::join_all`
[INFO] [stdout]  --> src/outflow/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::future::join_all;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `json`
[INFO] [stdout]   --> src/outflow/mod.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde_json::{json, Number, Value};
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `markdown::ParseOptions`
[INFO] [stdout]  --> src/sampler/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use markdown::ParseOptions;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Deserialize`
[INFO] [stdout]  --> src/sampler/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use serde::Deserialize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/outflow/mod.rs:125:28
[INFO] [stdout]     |
[INFO] [stdout] 125 | pub async fn create_output(mut data_point: DataPoint, ctx: &LakeContext) -> Result<(), Error> {
[INFO] [stdout]     |                            ----^^^^^^^^^^
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/outflow/mod.rs:125:28
[INFO] [stdout]     |
[INFO] [stdout] 125 | pub async fn create_output(mut data_point: DataPoint, ctx: &LakeContext) -> Result<(), Error> {
[INFO] [stdout]     |                            ----^^^^^^^^^^
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/outflow/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/outflow/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/options.rs:67:10
[INFO] [stdout]    |
[INFO] [stdout] 67 | #[derive(Config, Debug, Clone)]
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the derive macro `Config` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/options.rs:109:10
[INFO] [stdout]     |
[INFO] [stdout] 109 | #[derive(Config, Debug, Clone)]
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the derive macro `Config` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/options.rs:119:10
[INFO] [stdout]     |
[INFO] [stdout] 119 | #[derive(Config, Debug, Clone)]
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the derive macro `Config` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flatlake` (lib) due to 3 previous errors; 18 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/options.rs:67:10
[INFO] [stdout]    |
[INFO] [stdout] 67 | #[derive(Config, Debug, Clone)]
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the derive macro `Config` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/options.rs:109:10
[INFO] [stdout]     |
[INFO] [stdout] 109 | #[derive(Config, Debug, Clone)]
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the derive macro `Config` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/options.rs:119:10
[INFO] [stdout]     |
[INFO] [stdout] 119 | #[derive(Config, Debug, Clone)]
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the derive macro `Config` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flatlake` (lib test) due to 3 previous errors; 18 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9dcd3b7ec662919b9ce22411492f760323d086961d14706d127469164dde61c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dcd3b7ec662919b9ce22411492f760323d086961d14706d127469164dde61c1", kill_on_drop: false }`
[INFO] [stdout] 9dcd3b7ec662919b9ce22411492f760323d086961d14706d127469164dde61c1
