[INFO] fetching crate cargo-msrv 0.6.0...
[INFO] checking cargo-msrv-0.6.0 against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] extracting crate cargo-msrv 0.6.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cargo-msrv 0.6.0 on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-msrv 0.6.0
[INFO] finished tweaking crates.io crate cargo-msrv 0.6.0
[INFO] tweaked toml for crates.io crate cargo-msrv 0.6.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate cargo-msrv 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9334f00f0be882627a449b882f7401f99abcc15531d185e13647c045e1e42414
[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" "9334f00f0be882627a449b882f7401f99abcc15531d185e13647c045e1e42414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9334f00f0be882627a449b882f7401f99abcc15531d185e13647c045e1e42414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9334f00f0be882627a449b882f7401f99abcc15531d185e13647c045e1e42414", kill_on_drop: false }`
[INFO] [stdout] 9334f00f0be882627a449b882f7401f99abcc15531d185e13647c045e1e42414
[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" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 866480c3e3d88e5868e1d4f20ba113388e7b73244f27c6032a2d212e44d3b78d
[INFO] running `Command { std: "docker" "start" "-a" "866480c3e3d88e5868e1d4f20ba113388e7b73244f27c6032a2d212e44d3b78d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling syn v1.0.62
[INFO] [stderr]     Checking wildmatch v1.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking openssl-sys v0.9.61
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking terminal_size v0.1.16
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking directories-next v2.0.0
[INFO] [stderr]     Checking openssl v0.10.33
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]     Checking native-tls v0.2.7
[INFO] [stderr]     Checking attohttpc v0.17.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling parameterized-macro v0.3.1
[INFO] [stderr]    Compiling yare-macro v1.0.1
[INFO] [stderr]     Checking yare v1.0.1
[INFO] [stderr]     Checking parameterized v0.3.1
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking rust-releases-core v0.15.1
[INFO] [stderr]     Checking rust-releases-io v0.15.1
[INFO] [stderr]     Checking rust-releases-rust-changelog v0.15.1
[INFO] [stderr]     Checking rust-releases v0.15.3
[INFO] [stderr]     Checking cargo-msrv v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.67s
[INFO] running `Command { std: "docker" "inspect" "866480c3e3d88e5868e1d4f20ba113388e7b73244f27c6032a2d212e44d3b78d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "866480c3e3d88e5868e1d4f20ba113388e7b73244f27c6032a2d212e44d3b78d", kill_on_drop: false }`
[INFO] [stdout] 866480c3e3d88e5868e1d4f20ba113388e7b73244f27c6032a2d212e44d3b78d