[INFO] cloning repository https://github.com/ChristopherBiscardi/salsa-file-watch-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ChristopherBiscardi/salsa-file-watch-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristopherBiscardi%2Fsalsa-file-watch-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristopherBiscardi%2Fsalsa-file-watch-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f968dc8ea13a90373f91d962f173de3fe6ae24cd
[INFO] testing ChristopherBiscardi/salsa-file-watch-example against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristopherBiscardi%2Fsalsa-file-watch-example" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChristopherBiscardi/salsa-file-watch-example on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ChristopherBiscardi/salsa-file-watch-example
[INFO] finished tweaking git repo https://github.com/ChristopherBiscardi/salsa-file-watch-example
[INFO] tweaked toml for git repo https://github.com/ChristopherBiscardi/salsa-file-watch-example written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ChristopherBiscardi/salsa-file-watch-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded oorandom v11.1.2
[INFO] [stderr]   Downloaded hashbrown v0.9.0
[INFO] [stderr]   Downloaded salsa-macros v0.15.2
[INFO] [stderr]   Downloaded salsa v0.15.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0047af331a145ad8d4f61e1165c76521818c567d9dd53b41b5e5fe2bfcb1b02a
[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" "0047af331a145ad8d4f61e1165c76521818c567d9dd53b41b5e5fe2bfcb1b02a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0047af331a145ad8d4f61e1165c76521818c567d9dd53b41b5e5fe2bfcb1b02a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0047af331a145ad8d4f61e1165c76521818c567d9dd53b41b5e5fe2bfcb1b02a", kill_on_drop: false }`
[INFO] [stdout] 0047af331a145ad8d4f61e1165c76521818c567d9dd53b41b5e5fe2bfcb1b02a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 884f8cc044bb5cf3c88d7a385f2460e9e34462664f464af4fbe6962469e8f063
[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" "884f8cc044bb5cf3c88d7a385f2460e9e34462664f464af4fbe6962469e8f063", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling smallvec v1.4.2
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling hashbrown v0.9.0
[INFO] [stderr]    Compiling oorandom v11.1.2
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling lock_api v0.4.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling net2 v0.2.35
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling parking_lot_core v0.8.0
[INFO] [stderr]    Compiling inotify-sys v0.1.3
[INFO] [stderr]    Compiling filetime v0.2.12
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling parking_lot v0.11.0
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling notify v4.0.15
[INFO] [stderr]    Compiling salsa-macros v0.15.2
[INFO] [stderr]    Compiling salsa v0.15.2
[INFO] [stderr]    Compiling salsa-file-watch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Receiver`, `Sender`
[INFO] [stdout]  --> main.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::mpsc::{channel, Receiver, Sender};
[INFO] [stdout]   |                                ^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> main.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let contents = db.read(file_to_watch.to_path_buf());
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[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]   --> main.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut watcher = Arc::from(Mutex::new(watcher(tx, Duration::from_secs(1)).unwrap()));
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.41s
[INFO] running `Command { std: "docker" "inspect" "884f8cc044bb5cf3c88d7a385f2460e9e34462664f464af4fbe6962469e8f063", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "884f8cc044bb5cf3c88d7a385f2460e9e34462664f464af4fbe6962469e8f063", kill_on_drop: false }`
[INFO] [stdout] 884f8cc044bb5cf3c88d7a385f2460e9e34462664f464af4fbe6962469e8f063
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc58a736cc7dad0f9729cf92f3b14079f882b5bfdc817a0095068c9ab373e68d
[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" "dc58a736cc7dad0f9729cf92f3b14079f882b5bfdc817a0095068c9ab373e68d", kill_on_drop: false }`
[INFO] [stderr]    Compiling salsa-file-watch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Receiver`, `Sender`
[INFO] [stdout]  --> main.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::mpsc::{channel, Receiver, Sender};
[INFO] [stdout]   |                                ^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> main.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let contents = db.read(file_to_watch.to_path_buf());
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[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]   --> main.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut watcher = Arc::from(Mutex::new(watcher(tx, Duration::from_secs(1)).unwrap()));
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "dc58a736cc7dad0f9729cf92f3b14079f882b5bfdc817a0095068c9ab373e68d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc58a736cc7dad0f9729cf92f3b14079f882b5bfdc817a0095068c9ab373e68d", kill_on_drop: false }`
[INFO] [stdout] dc58a736cc7dad0f9729cf92f3b14079f882b5bfdc817a0095068c9ab373e68d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 46a88b087ee09d91d35628f54b85279074489cca15784afc1eab53576ea5a5f1
[INFO] running `Command { std: "docker" "start" "-a" "46a88b087ee09d91d35628f54b85279074489cca15784afc1eab53576ea5a5f1", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Receiver`, `Sender`
[INFO] [stderr]  --> main.rs:4:32
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::mpsc::{channel, Receiver, Sender};
[INFO] [stderr]   |                                ^^^^^^^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `contents`
[INFO] [stderr]   --> main.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let contents = db.read(file_to_watch.to_path_buf());
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> main.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let mut watcher = Arc::from(Mutex::new(watcher(tx, Duration::from_secs(1)).unwrap()));
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/salsa_file_watch-43fa127def8ed511)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "46a88b087ee09d91d35628f54b85279074489cca15784afc1eab53576ea5a5f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46a88b087ee09d91d35628f54b85279074489cca15784afc1eab53576ea5a5f1", kill_on_drop: false }`
[INFO] [stdout] 46a88b087ee09d91d35628f54b85279074489cca15784afc1eab53576ea5a5f1