[INFO] fetching crate flashcards 0.1.1...
[INFO] testing flashcards-0.1.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate flashcards 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate flashcards 0.1.1
[INFO] finished tweaking crates.io crate flashcards 0.1.1
[INFO] tweaked toml for crates.io crate flashcards 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flashcards 0.1.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate flashcards 0.1.1 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 950b360787965f2590323729538f0d34e4f2a2c0768823c160466ee909892df1
[INFO] running `Command { std: "docker" "start" "-a" "950b360787965f2590323729538f0d34e4f2a2c0768823c160466ee909892df1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "950b360787965f2590323729538f0d34e4f2a2c0768823c160466ee909892df1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "950b360787965f2590323729538f0d34e4f2a2c0768823c160466ee909892df1", kill_on_drop: false }`
[INFO] [stdout] 950b360787965f2590323729538f0d34e4f2a2c0768823c160466ee909892df1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4915f631fe09462869db03bdfcfe7bb41a55ca5611c0703be4352a79709271f2
[INFO] running `Command { std: "docker" "start" "-a" "4915f631fe09462869db03bdfcfe7bb41a55ca5611c0703be4352a79709271f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling fs_extra v1.2.0
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling flate2 v1.0.22
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling tar v0.4.38
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling flashcards v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `close_fds`, `id`, and `name` are never used
[INFO] [stdout]    --> src/lib.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout]  22 | impl Deck {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn close_fds(&self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |     fn id(&self) -> &str {
[INFO] [stdout]     |        ^^
[INFO] [stdout] ...
[INFO] [stdout] 134 |     fn name(&self) -> &str {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `open`, `close`, and `is_opened` are never used
[INFO] [stdout]    --> src/lib.rs:163:5
[INFO] [stdout]     |
[INFO] [stdout] 159 | impl FileDesc {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 163 |     fn new(path: impl AsRef<Path>, rc: u32) -> Result<Self> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 |     fn open(&mut self, storage_path: impl AsRef<Path>) -> Result<()> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 195 |     fn close(&mut self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 223 |     fn is_opened(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.56s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: fs_extra v1.2.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "4915f631fe09462869db03bdfcfe7bb41a55ca5611c0703be4352a79709271f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4915f631fe09462869db03bdfcfe7bb41a55ca5611c0703be4352a79709271f2", kill_on_drop: false }`
[INFO] [stdout] 4915f631fe09462869db03bdfcfe7bb41a55ca5611c0703be4352a79709271f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15bea103e6a54f3fc1c5114b22b1d14274e10e83e6efcf6528ef8ee185146b0e
[INFO] running `Command { std: "docker" "start" "-a" "15bea103e6a54f3fc1c5114b22b1d14274e10e83e6efcf6528ef8ee185146b0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling flashcards v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `close_fds`, `id`, and `name` are never used
[INFO] [stdout]    --> src/lib.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout]  22 | impl Deck {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn close_fds(&self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |     fn id(&self) -> &str {
[INFO] [stdout]     |        ^^
[INFO] [stdout] ...
[INFO] [stdout] 134 |     fn name(&self) -> &str {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `open`, `close`, and `is_opened` are never used
[INFO] [stdout]    --> src/lib.rs:163:5
[INFO] [stdout]     |
[INFO] [stdout] 159 | impl FileDesc {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 163 |     fn new(path: impl AsRef<Path>, rc: u32) -> Result<Self> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 |     fn open(&mut self, storage_path: impl AsRef<Path>) -> Result<()> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 195 |     fn close(&mut self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 223 |     fn is_opened(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `close_fds`, `id`, and `name` are never used
[INFO] [stdout]    --> src/lib.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout]  22 | impl Deck {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn close_fds(&self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |     fn id(&self) -> &str {
[INFO] [stdout]     |        ^^
[INFO] [stdout] ...
[INFO] [stdout] 134 |     fn name(&self) -> &str {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `open`, `close`, and `is_opened` are never used
[INFO] [stdout]    --> src/lib.rs:163:5
[INFO] [stdout]     |
[INFO] [stdout] 159 | impl FileDesc {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 163 |     fn new(path: impl AsRef<Path>, rc: u32) -> Result<Self> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 |     fn open(&mut self, storage_path: impl AsRef<Path>) -> Result<()> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 195 |     fn close(&mut self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 223 |     fn is_opened(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: fs_extra v1.2.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "15bea103e6a54f3fc1c5114b22b1d14274e10e83e6efcf6528ef8ee185146b0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15bea103e6a54f3fc1c5114b22b1d14274e10e83e6efcf6528ef8ee185146b0e", kill_on_drop: false }`
[INFO] [stdout] 15bea103e6a54f3fc1c5114b22b1d14274e10e83e6efcf6528ef8ee185146b0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] db2cad331286372e73ac8ec4a705e6a2a37b6e0be0387e8f40b17ce11ca71b81
[INFO] running `Command { std: "docker" "start" "-a" "db2cad331286372e73ac8ec4a705e6a2a37b6e0be0387e8f40b17ce11ca71b81", kill_on_drop: false }`
[INFO] [stderr] warning: methods `close_fds`, `id`, and `name` are never used
[INFO] [stderr]    --> src/lib.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr]  22 | impl Deck {
[INFO] [stderr]     | --------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 124 |     fn close_fds(&self) {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 130 |     fn id(&self) -> &str {
[INFO] [stderr]     |        ^^
[INFO] [stderr] ...
[INFO] [stderr] 134 |     fn name(&self) -> &str {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `open`, `close`, and `is_opened` are never used
[INFO] [stderr]    --> src/lib.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 159 | impl FileDesc {
[INFO] [stderr]     | ------------- associated items in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 163 |     fn new(path: impl AsRef<Path>, rc: u32) -> Result<Self> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 180 |     fn open(&mut self, storage_path: impl AsRef<Path>) -> Result<()> {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 195 |     fn close(&mut self) {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 223 |     fn is_opened(&self) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `flashcards` (lib) generated 2 warnings
[INFO] [stderr] warning: `flashcards` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: fs_extra v1.2.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/flashcards-dda55d5be71d5aca)
[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] [stderr]      Running unittests src/bin/flashcards.rs (/opt/rustwide/target/debug/deps/flashcards-4633aa42cf460c42)
[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] [stderr]    Doc-tests flashcards
[INFO] [stdout] 
[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" "db2cad331286372e73ac8ec4a705e6a2a37b6e0be0387e8f40b17ce11ca71b81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db2cad331286372e73ac8ec4a705e6a2a37b6e0be0387e8f40b17ce11ca71b81", kill_on_drop: false }`
[INFO] [stdout] db2cad331286372e73ac8ec4a705e6a2a37b6e0be0387e8f40b17ce11ca71b81
