[INFO] fetching crate mun_vfs 0.1.0...
[INFO] testing mun_vfs-0.1.0 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] extracting crate mun_vfs 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate mun_vfs 0.1.0 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 crates.io crate mun_vfs 0.1.0
[INFO] finished tweaking crates.io crate mun_vfs 0.1.0
[INFO] tweaked toml for crates.io crate mun_vfs 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] e2c32e336043a7a5daec820822d92ca5e9c068b25243b06c3f4ae4c3e310049e
[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" "e2c32e336043a7a5daec820822d92ca5e9c068b25243b06c3f4ae4c3e310049e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2c32e336043a7a5daec820822d92ca5e9c068b25243b06c3f4ae4c3e310049e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2c32e336043a7a5daec820822d92ca5e9c068b25243b06c3f4ae4c3e310049e", kill_on_drop: false }`
[INFO] [stdout] e2c32e336043a7a5daec820822d92ca5e9c068b25243b06c3f4ae4c3e310049e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] aae2d7695e21da377491a75430a12831c92cc02c01766e2a3327a6d0c8ca7295
[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" "aae2d7695e21da377491a75430a12831c92cc02c01766e2a3327a6d0c8ca7295", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling relative-path v1.4.0
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]    Compiling mun_paths v0.1.0
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling inotify v0.9.3
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling notify v5.0.0-pre.10
[INFO] [stderr]    Compiling mun_vfs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.78s
[INFO] running `Command { std: "docker" "inspect" "aae2d7695e21da377491a75430a12831c92cc02c01766e2a3327a6d0c8ca7295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aae2d7695e21da377491a75430a12831c92cc02c01766e2a3327a6d0c8ca7295", kill_on_drop: false }`
[INFO] [stdout] aae2d7695e21da377491a75430a12831c92cc02c01766e2a3327a6d0c8ca7295
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 1ea1a049e175107c217d2f13d94c1acbf194a4a76c3750fda738f27b4db75bf0
[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" "1ea1a049e175107c217d2f13d94c1acbf194a4a76c3750fda738f27b4db75bf0", kill_on_drop: false }`
[INFO] [stderr]    Compiling mun_vfs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:158:66
[INFO] [stdout]     |
[INFO] [stdout] 158 |         assert!(vfs.set_file_contents(&test_path, Some(vec![])), true);
[INFO] [stdout]     |                                                                  ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 158 |         assert!(vfs.set_file_contents(&test_path, Some(vec![])), "{}", true);
[INFO] [stdout]     |                                                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:176:67
[INFO] [stdout]     |
[INFO] [stdout] 176 |         assert!(vfs.set_file_contents(&test_path, Some(vec![0])), true);
[INFO] [stdout]     |                                                                   ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 176 |         assert!(vfs.set_file_contents(&test_path, Some(vec![0])), "{}", true);
[INFO] [stdout]     |                                                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:179:58
[INFO] [stdout]     |
[INFO] [stdout] 179 |         assert!(vfs.set_file_contents(&test_path, None), true);
[INFO] [stdout]     |                                                          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 179 |         assert!(vfs.set_file_contents(&test_path, None), "{}", true);
[INFO] [stdout]     |                                                          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `Command { std: "docker" "inspect" "1ea1a049e175107c217d2f13d94c1acbf194a4a76c3750fda738f27b4db75bf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ea1a049e175107c217d2f13d94c1acbf194a4a76c3750fda738f27b4db75bf0", kill_on_drop: false }`
[INFO] [stdout] 1ea1a049e175107c217d2f13d94c1acbf194a4a76c3750fda738f27b4db75bf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stdout] f5a467493925c162d4038122a851b882a2a7a3e58ca28f128c4cb92e7df58f9e
[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" "f5a467493925c162d4038122a851b882a2a7a3e58ca28f128c4cb92e7df58f9e", kill_on_drop: false }`
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/lib.rs:158:66
[INFO] [stderr]     |
[INFO] [stderr] 158 |         assert!(vfs.set_file_contents(&test_path, Some(vec![])), true);
[INFO] [stderr]     |                                                                  ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stderr]     = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]     |
[INFO] [stderr] 158 |         assert!(vfs.set_file_contents(&test_path, Some(vec![])), "{}", true);
[INFO] [stderr]     |                                                                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/lib.rs:176:67
[INFO] [stderr]     |
[INFO] [stderr] 176 |         assert!(vfs.set_file_contents(&test_path, Some(vec![0])), true);
[INFO] [stderr]     |                                                                   ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]     |
[INFO] [stderr] 176 |         assert!(vfs.set_file_contents(&test_path, Some(vec![0])), "{}", true);
[INFO] [stderr]     |                                                                   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/lib.rs:179:58
[INFO] [stderr]     |
[INFO] [stderr] 179 |         assert!(vfs.set_file_contents(&test_path, None), true);
[INFO] [stderr]     |                                                          ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]     |
[INFO] [stderr] 179 |         assert!(vfs.set_file_contents(&test_path, None), "{}", true);
[INFO] [stderr]     |                                                          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mun_vfs-1dbe4535c5da4040)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test monitor::notify_monitor::tests::construct ... ok
[INFO] [stdout] test monitor::tests::test_config ... ok
[INFO] [stdout] test path_interner::tests::intern ... ok
[INFO] [stdout] test tests::vfs ... ok
[INFO] [stdout] test tests::iter ... ok
[INFO] [stdout] test monitor::tests::monitor_is_object_safe ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mun_vfs
[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" "f5a467493925c162d4038122a851b882a2a7a3e58ca28f128c4cb92e7df58f9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5a467493925c162d4038122a851b882a2a7a3e58ca28f128c4cb92e7df58f9e", kill_on_drop: false }`
[INFO] [stdout] f5a467493925c162d4038122a851b882a2a7a3e58ca28f128c4cb92e7df58f9e