[INFO] fetching crate lethe 0.4.0...
[INFO] checking lethe-0.4.0 against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] extracting crate lethe 0.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate lethe 0.4.0 on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lethe 0.4.0
[INFO] finished tweaking crates.io crate lethe 0.4.0
[INFO] tweaked toml for crates.io crate lethe 0.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate lethe 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded numtoa v0.2.3
[INFO] [stderr]   Downloaded terminal_size v0.1.12
[INFO] [stderr]   Downloaded rust-argon2 v0.7.0
[INFO] [stderr]   Downloaded assert_matches v1.3.0
[INFO] [stderr]   Downloaded widestring v0.4.0
[INFO] [stderr]   Downloaded sysfs-class v0.1.3
[INFO] [stderr]   Downloaded bstr v0.2.12
[INFO] [stderr]   Downloaded number_prefix v0.2.8
[INFO] [stderr]   Downloaded console v0.11.2
[INFO] [stderr]   Downloaded anyhow v1.0.28
[INFO] [stderr]   Downloaded redox_users v0.3.4
[INFO] [stderr]   Downloaded streaming-iterator v0.1.5
[INFO] [stderr]   Downloaded console v0.7.7
[INFO] [stderr]   Downloaded termios v0.3.2
[INFO] [stderr]   Downloaded prettytable-rs v0.8.0
[INFO] [stderr]   Downloaded ctrlc v3.1.4
[INFO] [stderr]   Downloaded indicatif v0.11.0
[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cab0afbe05d92efb89bef7ce1becbed1b12a8c38ea2ea8f58e84e814b66d0f97
[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" "cab0afbe05d92efb89bef7ce1becbed1b12a8c38ea2ea8f58e84e814b66d0f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cab0afbe05d92efb89bef7ce1becbed1b12a8c38ea2ea8f58e84e814b66d0f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cab0afbe05d92efb89bef7ce1becbed1b12a8c38ea2ea8f58e84e814b66d0f97", kill_on_drop: false }`
[INFO] [stdout] cab0afbe05d92efb89bef7ce1becbed1b12a8c38ea2ea8f58e84e814b66d0f97
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ca2b83bb11a5f58d8aab327c3c3357821090b02d8048222c3125e669ee71bce
[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" "4ca2b83bb11a5f58d8aab327c3c3357821090b02d8048222c3125e669ee71bce", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking numtoa v0.2.3
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking streaming-iterator v0.1.5
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking miniz_oxide v0.3.6
[INFO] [stderr]     Checking sysfs-class v0.1.3
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking number_prefix v0.2.8
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking terminal_size v0.1.12
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking console v0.11.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking console v0.7.7
[INFO] [stderr]     Checking indicatif v0.11.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking ctrlc v3.1.4
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]     Checking lethe v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `is_trim_supported`
[INFO] [stdout]   --> src/storage/nix/linux.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn is_trim_supported(_fd: RawFd) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_trim_supported`
[INFO] [stdout]   --> src/storage/nix/linux.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn is_trim_supported(_fd: RawFd) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.43s
[INFO] running `Command { std: "docker" "inspect" "4ca2b83bb11a5f58d8aab327c3c3357821090b02d8048222c3125e669ee71bce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ca2b83bb11a5f58d8aab327c3c3357821090b02d8048222c3125e669ee71bce", kill_on_drop: false }`
[INFO] [stdout] 4ca2b83bb11a5f58d8aab327c3c3357821090b02d8048222c3125e669ee71bce