[INFO] fetching crate notedown_ast 0.4.0...
[INFO] checking notedown_ast-0.4.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate notedown_ast 0.4.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate notedown_ast 0.4.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate notedown_ast 0.4.0
[INFO] finished tweaking crates.io crate notedown_ast 0.4.0
[INFO] tweaked toml for crates.io crate notedown_ast 0.4.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded carbon-lib v0.2.1
[INFO] [stderr]   Downloaded carbon-dump v1.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba666b30acc7adcfd3b1b1ae01e2d2df6fb189ec4c8c7b503901e1894330e370
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ba666b30acc7adcfd3b1b1ae01e2d2df6fb189ec4c8c7b503901e1894330e370", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba666b30acc7adcfd3b1b1ae01e2d2df6fb189ec4c8c7b503901e1894330e370", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba666b30acc7adcfd3b1b1ae01e2d2df6fb189ec4c8c7b503901e1894330e370", kill_on_drop: false }`
[INFO] [stdout] ba666b30acc7adcfd3b1b1ae01e2d2df6fb189ec4c8c7b503901e1894330e370
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e491069413eb4bbb7ce8dc5a0bd795eebfa1038ac0586dd43d01120ae70f58f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6e491069413eb4bbb7ce8dc5a0bd795eebfa1038ac0586dd43d01120ae70f58f", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking notedown_parser v0.4.3
[INFO] [stderr]     Checking notedown_ast v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `path::PathBuf`
[INFO] [stdout]  --> src/commands/io.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, path::PathBuf};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `path::PathBuf`
[INFO] [stdout]  --> src/commands/io.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, path::PathBuf};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]  --> src/commands/io.rs:5:30
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn import(ctx: &Context, args: &Vec<Value>, kvs: &HashMap<String, Value>) -> Option<String> {
[INFO] [stdout]   |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kvs`
[INFO] [stdout]  --> src/commands/io.rs:5:49
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn import(ctx: &Context, args: &Vec<Value>, kvs: &HashMap<String, Value>) -> Option<String> {
[INFO] [stdout]   |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_kvs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ty` is never read
[INFO] [stdout]   --> src/commands/media.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let (mut ty, mut id) = Default::default();
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `id` is never read
[INFO] [stdout]   --> src/commands/media.rs:38:18
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let (mut ty, mut id) = Default::default();
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kvs`
[INFO] [stdout]   --> src/commands/media.rs:54:58
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn fancy_quote(ctx: &mut Context, args: &Vec<Value>, kvs: &HashMap<String, Value>) -> AST {
[INFO] [stdout]    |                                                          ^^^ help: if this is intentional, prefix it with an underscore: `_kvs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `text` is assigned to, but never used
[INFO] [stdout]   --> src/commands/media.rs:73:10
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let (mut text, mut src, mut href) = Default::default();
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_text` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/commands/media.rs:73:20
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let (mut text, mut src, mut href) = Default::default();
[INFO] [stdout]    |                    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `text` is never read
[INFO] [stdout]   --> src/commands/media.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |             text = image.to_string();
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `text` is never read
[INFO] [stdout]   --> src/commands/media.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             text = alt.to_string();
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `text` is never read
[INFO] [stdout]   --> src/commands/media.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |             text = alt.to_string();
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `link` is never read
[INFO] [stdout]    --> src/commands/media.rs:103:10
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let (mut link, mut alt) = Default::default();
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alt` is never read
[INFO] [stdout]    --> src/commands/media.rs:103:20
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let (mut link, mut alt) = Default::default();
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cfg`
[INFO] [stdout]   --> src/traits/to_html.rs:97:21
[INFO] [stdout]    |
[INFO] [stdout] 97 |                 let ref cfg = GLOBAL_CONFIG.lock().unwrap();
[INFO] [stdout]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cfg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]  --> src/commands/io.rs:5:30
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn import(ctx: &Context, args: &Vec<Value>, kvs: &HashMap<String, Value>) -> Option<String> {
[INFO] [stdout]   |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kvs`
[INFO] [stdout]  --> src/commands/io.rs:5:49
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn import(ctx: &Context, args: &Vec<Value>, kvs: &HashMap<String, Value>) -> Option<String> {
[INFO] [stdout]   |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_kvs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ty` is never read
[INFO] [stdout]   --> src/commands/media.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let (mut ty, mut id) = Default::default();
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `id` is never read
[INFO] [stdout]   --> src/commands/media.rs:38:18
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let (mut ty, mut id) = Default::default();
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kvs`
[INFO] [stdout]   --> src/commands/media.rs:54:58
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn fancy_quote(ctx: &mut Context, args: &Vec<Value>, kvs: &HashMap<String, Value>) -> AST {
[INFO] [stdout]    |                                                          ^^^ help: if this is intentional, prefix it with an underscore: `_kvs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `text` is assigned to, but never used
[INFO] [stdout]   --> src/commands/media.rs:73:10
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let (mut text, mut src, mut href) = Default::default();
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_text` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/commands/media.rs:73:20
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let (mut text, mut src, mut href) = Default::default();
[INFO] [stdout]    |                    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `text` is never read
[INFO] [stdout]   --> src/commands/media.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |             text = image.to_string();
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `text` is never read
[INFO] [stdout]   --> src/commands/media.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             text = alt.to_string();
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `text` is never read
[INFO] [stdout]   --> src/commands/media.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |             text = alt.to_string();
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `link` is never read
[INFO] [stdout]    --> src/commands/media.rs:103:10
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let (mut link, mut alt) = Default::default();
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `alt` is never read
[INFO] [stdout]    --> src/commands/media.rs:103:20
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let (mut link, mut alt) = Default::default();
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cfg`
[INFO] [stdout]   --> src/traits/to_html.rs:97:21
[INFO] [stdout]    |
[INFO] [stdout] 97 |                 let ref cfg = GLOBAL_CONFIG.lock().unwrap();
[INFO] [stdout]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cfg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.38s
[INFO] running `Command { std: "docker" "inspect" "6e491069413eb4bbb7ce8dc5a0bd795eebfa1038ac0586dd43d01120ae70f58f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e491069413eb4bbb7ce8dc5a0bd795eebfa1038ac0586dd43d01120ae70f58f", kill_on_drop: false }`
[INFO] [stdout] 6e491069413eb4bbb7ce8dc5a0bd795eebfa1038ac0586dd43d01120ae70f58f