[INFO] cloning repository https://github.com/jaynus/foldy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jaynus/foldy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaynus%2Ffoldy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaynus%2Ffoldy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 794f1157efcf503e70e73790ab14dd40c5ac1744
[INFO] checking jaynus/foldy against try#44e31dee3cf6f37b4f652572897bb0eb25c477ee for pr-139763
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaynus%2Ffoldy" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jaynus/foldy on toolchain 44e31dee3cf6f37b4f652572897bb0eb25c477ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jaynus/foldy
[INFO] finished tweaking git repo https://github.com/jaynus/foldy
[INFO] tweaked toml for git repo https://github.com/jaynus/foldy written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jaynus/foldy 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" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: chown /var/lib/docker/overlay2/5a0442b4899ee1a18f419057febd5d3654f128760e14bc1c053c36014c4cad94-init/work/work: no such file or directory
[INFO] checking jaynus/foldy against try#44e31dee3cf6f37b4f652572897bb0eb25c477ee for pr-139763
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaynus%2Ffoldy" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jaynus/foldy on toolchain 44e31dee3cf6f37b4f652572897bb0eb25c477ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jaynus/foldy
[INFO] finished tweaking git repo https://github.com/jaynus/foldy
[INFO] tweaked toml for git repo https://github.com/jaynus/foldy written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jaynus/foldy 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" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06e94e4144685f02f0bf369515f380bd657ff322f5fdea551a16bc4adb08a1bc
[INFO] running `Command { std: "docker" "start" "-a" "06e94e4144685f02f0bf369515f380bd657ff322f5fdea551a16bc4adb08a1bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06e94e4144685f02f0bf369515f380bd657ff322f5fdea551a16bc4adb08a1bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06e94e4144685f02f0bf369515f380bd657ff322f5fdea551a16bc4adb08a1bc", kill_on_drop: false }`
[INFO] [stdout] 06e94e4144685f02f0bf369515f380bd657ff322f5fdea551a16bc4adb08a1bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23d93cfb09b96fc8b0ffcb3c3ef7cfd7b2f7ab39f0cc776ee17223352aecf7c1
[INFO] running `Command { std: "docker" "start" "-a" "23d93cfb09b96fc8b0ffcb3c3ef7cfd7b2f7ab39f0cc776ee17223352aecf7c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.11
[INFO] [stderr]     Checking thiserror v1.0.11
[INFO] [stderr]     Checking foldy v0.1.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::FoldyError::DirectoryNotFound`
[INFO] [stdout]  --> src/memory.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::FoldyError::DirectoryNotFound;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashSet` and `Iter as PathIter`
[INFO] [stdout]  --> src/memory.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     path::{Iter as PathIter, Path, PathBuf},
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 9 |     std::collections::{HashMap, HashSet},
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::FoldyError::DirectoryNotFound`
[INFO] [stdout]  --> src/memory.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::FoldyError::DirectoryNotFound;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashSet` and `Iter as PathIter`
[INFO] [stdout]  --> src/memory.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     path::{Iter as PathIter, Path, PathBuf},
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 9 |     std::collections::{HashMap, HashSet},
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/memory.rs:145:33
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn write_all(&mut self, mut buf: &[u8]) -> std::io::Result<()> {
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/memory.rs:145:29
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn write_all(&mut self, mut buf: &[u8]) -> std::io::Result<()> {
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/memory.rs:145:33
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn write_all(&mut self, mut buf: &[u8]) -> std::io::Result<()> {
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/memory.rs:145:29
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn write_all(&mut self, mut buf: &[u8]) -> std::io::Result<()> {
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/memory.rs:247:33
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn remove_dir<P>(&mut self, path: P) -> Result<(), FoldyError>
[INFO] [stdout]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/memory.rs:247:33
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn remove_dir<P>(&mut self, path: P) -> Result<(), FoldyError>
[INFO] [stdout]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> src/lib.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct DirEntry {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 51 |     path: PathBuf,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `path` is never used
[INFO] [stdout]   --> src/lib.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | impl DirEntry {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 54 |     fn path(&self) -> PathBuf {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> src/lib.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct DirEntry {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 51 |     path: PathBuf,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `path` is never used
[INFO] [stdout]   --> src/lib.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | impl DirEntry {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 54 |     fn path(&self) -> PathBuf {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/memory.rs:159:21
[INFO] [stdout]     |
[INFO] [stdout] 159 |                     self.grow(offset);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 159 |                     let _ = self.grow(offset);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/memory.rs:172:21
[INFO] [stdout]     |
[INFO] [stdout] 172 |                     self.grow(new_offset as u64);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 172 |                     let _ = self.grow(new_offset as u64);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/memory.rs:185:21
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     self.grow(new_offset as u64);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     let _ = self.grow(new_offset as u64);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/memory.rs:379:9
[INFO] [stdout]     |
[INFO] [stdout] 379 |         file.write(&test_data);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 379 |         let _ = file.write(&test_data);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/memory.rs:159:21
[INFO] [stdout]     |
[INFO] [stdout] 159 |                     self.grow(offset);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 159 |                     let _ = self.grow(offset);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/memory.rs:172:21
[INFO] [stdout]     |
[INFO] [stdout] 172 |                     self.grow(new_offset as u64);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 172 |                     let _ = self.grow(new_offset as u64);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/memory.rs:185:21
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     self.grow(new_offset as u64);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     let _ = self.grow(new_offset as u64);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.52s
[INFO] running `Command { std: "docker" "inspect" "23d93cfb09b96fc8b0ffcb3c3ef7cfd7b2f7ab39f0cc776ee17223352aecf7c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23d93cfb09b96fc8b0ffcb3c3ef7cfd7b2f7ab39f0cc776ee17223352aecf7c1", kill_on_drop: false }`
[INFO] [stdout] 23d93cfb09b96fc8b0ffcb3c3ef7cfd7b2f7ab39f0cc776ee17223352aecf7c1